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Off-topic: Hydrogen images
by mohamed noor 21 Apr '15

21 Apr '15

Dear all I will be presenting about protein crystallography to a group of PhD-level physicists and need some images from the community. Would anyone have high-quality images of density maps that show hydrogen atoms at 1. high and ultra-high X-ray resolution (say, about 1.2 A to about 0.5 A) 2. low or medium X-ray resolution (where H atoms are not visible) compared with neutron data (with H). Ideally these images should be from the same protein so that I can show the power of complementary beam source for the diffraction. A side question - what is the community's preference to get deuterated samples? Is it crystal soaking or growing E. coli in deuterium? All contributions will be credited. Thanks.

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citation
by Sneha Rangarajan 21 Apr '15

21 Apr '15

Hello, What is the correct way to cite Phenix MRage? Thanks, Sneha

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Standard settings for map generation in phenix.refine
by Tristan Croll 21 Apr '15

21 Apr '15

Hi all, In the phenix.refine GUI, the default options for the maps auto-generated in Coot include the R-free set in the map coefficients. Is this the best choice? It's fairly natural for the user to immediately inspect/correct their structure using the helpfully-provided Coot window - which, as per a recent discussion thread on this list, can easily lead to over-fitting. I suspect I've been looking at such a case over the last week or so - a mid-3A structure refined in Phenix with an amazingly low Rfree (0.234) and Rfree-Rwork (~0.016), despite clear (albeit non-disastrous) errors in a number of loops, and moderate-poor statistics in structural quality metrics. Tellingly, the Rfree goes up quite substantially upon re-refinement after correcting these issues. If maps generated with the Rfree set included should only ever be used for final display, wouldn't it be better to have them excluded by default? Best regards, Tristan Tristan Croll Lecturer Faculty of Health School of Biomedical Sciences Institute of Health and Biomedical Engineering Queensland University of Technology 60 Musk Ave Kelvin Grove QLD 4059 Australia +61 7 3138 6443 This email and its attachments (if any) contain confidential information intended for use by the addressee and may be privileged. We do not waive any confidentiality, privilege or copyright associated with the email or the attachments. If you are not the intended addressee, you must not use, transmit, disclose or copy the email or any attachments. If you receive this email by mistake, please notify the sender immediately and delete the original email.

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on importing CIF structure factors and cutting out density
by Smith Liu 21 Apr '15

21 Apr '15

Dear All, By importing CIF structure factors of the Phenix graphical interface, I converted a CIF file to a mtz file. But when I tried to cutting out the density by Phenix with the converted mtz file, it request the map labels, which the converted mtz file seems does not have. Will you please let me know how to have the issue settles? Smith

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phenix refinement of cryoEM data
by Ali Malay 17 Apr '15

17 Apr '15

Dear all, I am a relative newcomer to Phenix. I have a large multimeric protein structure docked into an electron density map, and I would like to further refine it by rigid-body refinement using Phenix. Is this a realistic strategy? I have made some attempts, first by converting the .mrc map file to .mtz as outlined here: https://www.phenix-online.org/documentation/reference/map_to_structure_fact… <https://www.phenix-online.org/documentation/reference/map_to_structure_fact…> Then I tried to refine using rigid body refinement in Phenix. However, the program quits but doesn’t really tell me why. Here’s the last part of the log file: Number of unique models: 24 Time building chain proxies: 36.85, per 1000 atoms: 0.26 Number of scatterers: 142296 At special positions: 0 Unit cell: (342, 342, 342, 90, 90, 90) Space group: P 1 (No. 1) Number of sites at special positions: 0 Number of scattering types: 4 Type Number sf(0) S 264 16.00 O 27720 8.00 N 25872 7.00 C 88440 6.00 sf(0) = scattering factor at diffraction angle 0. Writing MTZ file: /Users/xxx/Documents/Phenix/TEST/Refine_1/Test_refine_data.mtz Sorry Can anyone give me any ideas as to what went wrong? Also, is there a better way to do this? Thanks very much in advance!! A.M.

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find difference peaks
by Alejandro Virrueta 15 Apr '15

15 Apr '15

Hello, I'm working on a small project, and need some feedback. I am trying to rebuild methionine side-chains by looking at the difference peaks for a given Fo-Fc map. I envision a process as follows: 1. Delete the MET side-chain of a PDB file 2. Refine structure to get Fo-Fc map 3. Get a list of the peak positions relative to the coordinates of the PDB file I used 4. Filter list by keeping peaks near the MET C alpha/beta PDB coordinate. 5. Try to rebuild side-chain after anchoring the sulfur atom (assuming sulfur is located at the highest peak and within some distance to C beta) What functions should I use to achieve step 3? I am also trying to implement this process within the ringer program (phenix/cctbx_project/mmtbx/command_line/ringer.py). If anyone is familiar with this, what commands would work best within this ringer program? i.e. what functions can operate on difference_map (which is sampled by a point using tricubic_interpolation under 'def sample_angle')? I hope this makes some sense to someone. Thanks! Alex

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reflections file editor
by Almudena Ponce Salvatierra 14 Apr '15

14 Apr '15

Dear all, I would like to merge two datasets containing anomalous signal. If have done so earlier for native data within phenix in the reflections editor by selecting the arrays corresponding to FP and SIGFP and then running the program. However when I try to do so for the anomalous datasets it writes FP SIGFP and FP2 SIGFP2 instead or merging them, so it does with the anomalous signal... so I guess I have basically only one file containing two datasets but not a merged dataset. How can I solve it? Would it be possible, on the other hand, to merge a dataset with anomalous signal with a native one? The intention behind is to extend the resolution to the one of the native data. Best, Almudena -- Almudena Ponce-Salvatierra Macromolecular crystallography and Nucleic acid chemistry Max Planck Institute for Biophysical Chemistry Am Fassberg 11 37077 Göttingen Germany

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sugar puckering refinement with phenix refine
by Almudena Ponce Salvatierra 13 Apr '15

13 Apr '15

Dear all, does anyone know how phenix.refine deals with the sugar puckering of an RNA or a DNA strand? Does it refine it? Or does it leave it as it was built? Thank you very much in advance. Best wishes, Almudena -- Almudena Ponce-Salvatierra Macromolecular crystallography and Nucleic acid chemistry Max Planck Institute for Biophysical Chemistry Am Fassberg 11 37077 Göttingen Germany

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Link NGA and THR
by Cory Brooks 13 Apr '15

13 Apr '15

Hello! I am refining a structure with O-link glycosylation (GalNAc linked to Thr). Phenix seems to remove the link during refinement. Can anyone suggest a solution that will maintain the bond during refinement? Regards, Cory Cory Brooks,Ph.D.

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elbow-readyset
by Tarek DawoD 13 Apr '15

13 Apr '15

Dear All if i have pdb file for CdCl2, how could i generate cif file (to use later in phenix.refine) from that using readyset or elbow or any other tool.i could not find 3 letter could for CdCl2. COMPND UNNAMED AUTHOR GENERATED BY OPEN BABEL 2.3.1 HETATM 1 CD LIG 1 0.994 8.428 20.546 1.00 0.00 Cd HETATM 2 CL1 LIG 1 -0.441 6.507 20.373 1.00 0.00 Cl HETATM 3 CL2 LIG 1 3.190 7.731 21.231 1.00 0.00 Cl END Thank you for Help.regardsTK_DawoD

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Submit your abstract for the ACA Annual meeting in Philadelphia July 25-29, 2015
by Terwilliger, Thomas Charles 13 Apr '15

13 Apr '15

Hi Phenix users! You are invited to the ACA meeting in Philadelphia! Abstracts are still being accepted (see the invitation below). All the best, Tom T Tom Terwilliger Vice President, ACA Abstracts still being accepted ACA 2015 Meeting - July 25-29 Philadelphia, PA Is this email not displaying correctly? View it in your browser<http://us2.campaign-archive2.com/?u=3e43dd9d1724b97d2bc286881&id=0f524b9d2c…>. [https://gallery.mailchimp.com/3e43dd9d1724b97d2bc286881/images/2a8238a9-d30…] [http://www.amercrystalassn.org/2015-mtg-homepage]<http://amercrystalassn.us2.list-manage.com/track/click?u=3e43dd9d1724b97d2b…> ABSTRACT SUBMISSION DEADLINE IS EXTENDED ACA Annual Meeting • Philadelphia, PA • July 25 - 29, 2015 Submit abstract now to be considered for an oral presentation. Once all the lectures are scheduled, abstracts will continue to be accepted for poster presentations. [https://gallery.mailchimp.com/3e43dd9d1724b97d2bc286881/images/21952137-733…] Exhibit Show<http://amercrystalassn.us2.list-manage.com/track/click?u=3e43dd9d1724b97d2b…> First-time exhibitors receive 25% discount Discount rates for Not-for profits Corporate Members receive an additional discount Coffee breaks & poster sessions held in the exhibit hall to offer multiple opportunities to reach your target audience Your website linked on the meeting page Free listing in ACA RefleXions and Program & Show Guides Special sponsorships for Exhibitors only [https://gallery.mailchimp.com/3e43dd9d1724b97d2bc286881/images/d9f63f39-b8b…] Call for Papers:<http://amercrystalassn.us2.list-manage.com/track/click?u=3e43dd9d1724b97d2b…> 40% of talks selected from contributed abstracts No abstract submission fee Lower registration fees for members Sessions for students & young scientists on career directions, reviewer practices & more Full scientific program:www.AmerCrystalAssn.org<http://amercrystalassn.us2.list-manage1.com/track/click?u=3e43dd9d1724b97d2…> [https://gallery.mailchimp.com/3e43dd9d1724b97d2bc286881/images/961e8c70-86c…] Registration<http://amercrystalassn.us2.list-manage.com/track/click?u=3e43dd9d1724b97d2b…>: Join or pay membership dues and save on Registration fees Corporate Members receive advertising and exhibiting discounts Early bird rates until May 31 Online registration now open<http://amercrystalassn.us2.list-manage2.com/track/click?u=3e43dd9d1724b97d2…> follow on Twitter<Twitter%20Account%20not%20yet%20Authorized> | friend on Facebook | forward to a friend<http://us2.forward-to-friend.com/forward?u=3e43dd9d1724b97d2bc286881&id=0f5…> Copyright © 2014, AmericanCrystallographicAssn. All rights reserved. Our mailing address is: aca(a)hwi.buffalo.edu<mailto:[email protected]> ACA, PO Box 96, Buffalo, NY 14205 [Email Marketing Powered by MailChimp]<http://www.mailchimp.com/monkey-rewards/?utm_source=freemium_newsletter&utm…> unsubscribe from this list<http://amercrystalassn.us2.list-manage.com/unsubscribe?u=3e43dd9d1724b97d2b…> | update subscription preferences<http://amercrystalassn.us2.list-manage.com/profile?u=3e43dd9d1724b97d2bc286…>

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pdbtools: how to set the occupancy for an atom selection?
by Alejandro Virrueta 13 Apr '15

13 Apr '15

Hello, I was wondering if someone could show me a way to set the occupancy of a specific set of atoms to 0 using phenix.pdbtools. I noticed here <http://www.phenix-online.org/download/documentation/cci_apps/pdbtools.html#…> that there is no option under modify => occupancies to do an 'atom_selection'. Any help would be appreciated. Cheers, Alex

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Deposition question
by mohamed noor 13 Apr '15

13 Apr '15

Dear all I solved my structure using SAD from heme to 2 A and then did molecular replacement with a dataset diffracting to 1.2 A. Do I deposit only the mtz and pdb file from the last refinement run and report the corresponding statistics in 'Table 1'? Should I specify the experimental f' and f'' values? Thanks.

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expermiental sigma or SIGFP of the mtz file
by Smith Lee 13 Apr '15

13 Apr '15

Dear All, Will you please let me know what is the expermiental sigma or SIGFP of the mtz file? If a mtz file lacks the expermiental sigma or SIGFP, what does it mean? I am looking forward to getting your reply. Smith

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Reference model restraints in real space refinement?
by Oliver Clarke 12 Apr '15

12 Apr '15

Hi all, Is it possible to use reference model restraints at the moment during real space refinement (in phenix.real_space_refine)? I can’t see it in the documentation. On a related note, would it be possible at some point to allow users to set d_max in the phenix.map_to_structure_factors utility? At the moment it seems like the user can set d_min but not d_max - sometimes it is convenient to restrict the low res to 20 or 50Å, rather than the whole box size of an EM-map, which is the default. Best, Oliver.

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Phenix command to align the PDB sequence and input sequence
by Smith Liu 10 Apr '15

10 Apr '15

Dear All, Will you please tell me the Phenix command to align the PDB sequence and input sequence? I am looking forward to getting your reply. Smith

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Error refining with ramachandran restraints
by Oliver Clarke 10 Apr '15

10 Apr '15

Hi all, When I attempt to run a refinement using phenix.refine from the command line, using the parameter “ramachandran_restraints=true”, in the latest nightly build of phenix (dev-2006), I get the following error: ========================== Anomalous scatterer groups ========================= All atoms refined with f_prime=0 and f_double_prime=0. Traceback (most recent call last): File "/Applications/phenix-dev-2006/build/../modules/phenix/phenix/command_line/refine.py", line 11, in <module> command_line.run(command_name="phenix.refine", args=sys.argv[1:]) File "/Applications/phenix-dev-2006/modules/phenix/phenix/refinement/command_line.py", line 96, in run master_params=customized_master_params) File "/Applications/phenix-dev-2006/modules/phenix/phenix/refinement/driver.py", line 272, in __init__ secondary_structure_manager=self.sec_str, AttributeError: refine instance has no attribute 'sec_str' This happens for two different structures, so I don’t think it is a structure-specific thing, and I don’t recall this happening in older builds of phenix. The refinement runs fine if I don’t specify ramachandran restraints. Is there something obvious I am doing wrong? Best, Oliver.

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Autobuild error
by Lau Sze Yi (SIgN) 08 Apr '15

08 Apr '15

Hi, I did an Autobuild run. The Status panel indicated that the run is finished. In the Model building panel the status of run# 5 still says running (See attached screenshot). Is this normal? And when I click on run #4 to Open in Coot, I get an error message indicating that the directory could not be found (see attachment). What is wrong and how can I fix this? I am using version phenix-1.9-1692 on Mac. Regards, Sze Yi Research Fellow Singapore Immunology Network (SigN) 8A Biomedical Grove, #03-06 Immunos, Singapore 138648 DID: +65 6407 0640 Fax: +65 6407 0640

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on reciprocal space refine of the electronic microscopy map by Phenix
by Smith Liu 07 Apr '15

07 Apr '15

Dear All, Recently there are cryo-electronic microscopy papers which refine the reciprocal space of the electronic mcroscopy map by phenix refine. For the electronic mcroscopy map, what does it mean for the reciprocal space? How to get the reciprocal space map from the electronic mcroscopy map? In order to realize this kind of refine in phenx, we only process the xyz coordinates strategy refine in the graphical interface, right? I am looking forward to getting your reply. Smith

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FINAL REMINDER: Neutrons in Structural Biology
by Meilleur, Flora 06 Apr '15

06 Apr '15

6th Workshop on Neutron Scattering Applications in Structural Biology Oak Ridge, TN. June 1 - June 5, 2015 Application deadline: April 10, 2015 Detailed information can be found on the workshop web page: https://public.ornl.gov/neutrons/conf/gcnb2015. Flora Meilleur, Ph. D Assistant Professor, Molecular and Structural Biochemistry North Carolina State University Neutron Sciences Directorate Oak Ridge National Laboratory Phone: 865-242-5747

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Ensemble refinement
by mohamed noor 03 Apr '15

03 Apr '15

Using the FEM map, I managed to remove more bad waters and add instead ions from the crystallization mix. I tried phenix.ensemble_refinement but the Rfactor increased by 2 % (originally 19/22 % from phenix.refine). Before it crashes at the validation point all the time, it prints out the validation summary with 0.53-3.48 % and 1.87-7.22 % Ramachandran outlier (from 0.3 %, supported by density) and a Molprobity score of 1.57-1.92 and 1.82-2.14 depending on pTLS used (original single model score was 2.08). The clashscore in both settings (pTLS=0.6 and 1) are 0. Do I still go by the Rfactor and decide to not use ensemble refinement at all? Thanks.

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Structure with pseudo-NCS translation
by Mark A Saper 03 Apr '15

03 Apr '15

I know that Phaser takes account of NCS translation in the likelihood statistics ( Read, Adams, McCoy (2013) Intensity statistics in the presence of translational non crystallographic symmetry”). Has this also been incorporated into phenix.refine? I have a structure with pseudo NCS translations because of NCS rotational symmetry. One suggestion that I found in the archives, was to explicitly LS target refinement rather than ML. Any comments? Mark _________________________________ Mark A. Saper, Ph.D. Associate Professor of Biological Chemistry, University of Michigan Ann Arbor MI 48109-1055 U.S.A. saper(a)umich.edu phone (734) 764-3353 fax (734) 764-3323

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refinement
by Almudena Ponce Salvatierra 02 Apr '15

02 Apr '15

Dear all, I am using Phenix.refine after MR and I have a complete model and data to 2.8 Angstrom resolution. However, for some reason, Phenix does not place any water molecules. Is there a setting I could change in order to see whether this situation changes? What could the reason be? Thanks a lot in advance. Best, Almudena -- Almudena Ponce-Salvatierra Macromolecular crystallography and Nucleic acid chemistry Max Planck Institute for Biophysical Chemistry Am Fassberg 11 37077 Göttingen Germany

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twinning
by Shun Liu 01 Apr '15

01 Apr '15

Dear all, Recently I have got a data set that diffracts to 1.7 angstrom. Images look good. During data processing I did not find anything that looks strange. However, when I was doing Phaser-MR, I got a warning: “ Intensity moments suggest significant twinning (>5%). Tests based on possible twin laws will be more definitive.” What does this mean? A twinning data set? I still found a solution and refined the model step by step, using the data (20-1.7 angstrom). It seems that the final model and map are acceptable. But R-factors are 0.24/0.28, very high. Does the twin cause the high R-factors? Is there a solution to detwin? Or are the R-factors acceptable for a twinning data set? Any suggestions are appreciated and thanks in advance! Best, Shun

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a question on henix refine
by Smith Liu 01 Apr '15

01 Apr '15

Dear All, For the Phenix refine, the default for the Scattering table in "other options" in the graphical interface is n_gaussian, in which situation to use electron is much better? And how much would be the benefit to use electron instead of n_gaussian? Smith

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Maps
by mohamed noor 31 Mar '15

31 Mar '15

Dear developers What is the difference between MEM and FEM maps? I read the documentation and my understanding is both are supposed to create beautiful maps :) My problem is I have a structure at 1.9 A (a different protein than the one referred to in my previous question), the Rfactor is around 20/22 %, Rms bonds is 0.03 and Rms angles is 1.845. If the bonds/angles get lower, the Rfactor jumps up (same problem as the other structure). Looking in Coot, there are positive and negative density and missing density for the side chains of residues with high B factor. For some reason, phenix.refine keeps on adding water at strange places even at regions that I suspect to be just noise. For this reason, I want to see if the noise is really noise. A second reason is I have density that seem to be too big for a water molecule but waters were placed anyway, so I want to know if these are real positive density. The dataset was obtained from only 50 degrees, SG is P 61 2 2. Including more images brought up the Rmerge to 30-40% and Rfactor being stuck at 30 %. For some reason, I don't find the X-ray statistics from the phenix.model_vs_data logfile but in essence, I have: 28-1.9: 82 % 6 A - infinity: 95 % in the shells (2.25-2.14, 2.14-2.04, 2.04-1.97, 1.97-1.9) my completeness is around 85-62 % and CCwork is at least 70 % and CC1/2 of the dataset is 60 % at the highest resolution shell. Thanks.

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continuously Rfree lower than Rwork
by Smith Liu 31 Mar '15

31 Mar '15

Dear All, If in a Phenix.refine proces, the Rfree continuously lower than Rwork, what does it mean? Smith

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Twinning
by Shun Liu 30 Mar '15

30 Mar '15

Dear all, Recently I have got a data set that diffracts to 1.7 angstrom. Images look good. During data processing I did not find anything that looks strange. However, when I was doing Phaser-MR, I got a warning: “ Intensity moments suggest significant twinning (>5%). Tests based on possible twin laws will be more definitive.” What does this mean? A twin data set? I still found a solution and refined the model step by step, using the data (20-1.7 angstrom). It seems that the final model and map are acceptable. But R-factors are 0.24/0.28, a little high. Does the twin cause the high R-factors? Is there a solution to detwin? Or are the R-factors acceptable for a twin data set? Any suggestions are appreciated and thanks in advance! Best, Shun

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First-Science Discussions for Life-Science Beamlines at NSLS-II: April 21-22, 2015
by Robert Sweet 27 Mar '15

27 Mar '15

We will hold a "First Science at the ABBIX Beamlines" meeting on Tuesday - Wednesday, April 21-22, 2015, pertaining to the National Institutes of Health (NIH)-sponsored "Advanced Beamlines for Biological Investigations with X-rays" (ABBIX) Project. These three state-of-the-art beamlines are now under construction at the National Synchrotron Light Source (NSLS)-II facility at Brookhaven National Laboratory (BNL). Two of the beamlines are for macromolecular crystallography (MX), and the third is for life sciences applications of x-ray scattering. Visit this web site for further information and registration materials: http://workshops.ps.bnl.gov/?w=ABBIXApr2015 Briefly, the MX beamline called FMX - Frontier MX - is optimized to address microbeam applications, and the other called AMX - Highly Automated MX - is optimized for highly automated throughput. The scattering beamline called LIX - High Brightness X-Ray Scattering for Life Sciences - will offer multiple modes of study. The MX beamlines view canted undulator sources, and the scattering beamline views a single undulator, providing world-leading brightness. Current plans are to conclude construction by the end of 2015 and start commissioning then. During the commissioning period, opportunities will arise to perform early experiments before the general user programs of the beamlines commence in 2016, and it is the upcoming meeting's purpose to explore and discuss scientific areas and opportunities on which early operation of the beamlines could capitalize. Note: Registration is required. There is no registration fee. Visit this site to register: http://workshops.ps.bnl.gov/?w=ABBIXApr2015 Those who registered for the original meeting planned for January must re-register for the new occurrence in April. Contributed presentations describing experiments that exploit the capabilities of the ABBIX beamlines will be selected from submitted abstracts. The meeting will consist of both plenary and parallel sessions. The plenary session will begin with presentations on science topics in research fields that the beamlines are designed to address, followed by facility presentations to update the community about the early scientific capabilities at the suite of ABBIX beamlines and, in addition, of the Life Science and Biomedical Technology Research Resource (LSBR), sponsored by the NIH and the Department of Energy Office of Biological and Environmental Research (DOE BER). Two parallel sessions on Tuesday afternoon will focus on MX and x-ray scattering, consisting mainly of presentations that will address specific opportunities in these areas. These will be followed by two more parallel sessions on Wednesday morning, also focusing on MX and x-ray scattering, which will include contributions. If you wish to give a contributed presentation during one of the parallel sessions, please submit an abstract here: http://workshops.ps.bnl.gov/abstracts/default.aspx?w=ABBIXApr2015 The parallel sessions are designed to provide forums to facilitate more detailed discussions about potential first experiments at specific beamlines and the formation of the experiment teams. Specifically, each parallel session group will be charged to accomplish these goals: 1. Identify key research projects and the associated first experiments that may be performed at the suite of ABBIX beamlines, emphasizing those projects that will take advantage of NSLS-II properties and ABBIX beamline capabilities. 2. Facilitate the formation of research teams to generate first experiment proposals for submission. 3. Identify key additional team members in such areas as theory and analysis, ancillary measurements, and specimen preparation, needed to achieve the research goals. Confirmed invited speakers: Karen Allen (Boston Univ), Martin Caffrey (Trinity College Dublin), Seth Darst (Rockefeller Univ), Richard Gillilan (Cornell Univ), Wayne Hendrickson (Columbia Univ), AndrHoelz (California Inst Tech), Huey Huang (Rice Univ), Shenping Liu (Pfizer), Lee Makowski (Northeastern Univ), David Ostrov (Univ of Florida), Rebecca Page (Brown Univ), Anna Marie Pyle (Yale Univ), Christian Riekel (ESRF), Thomas Schneider (EMBL-Hamburg), John Tainer (Scripps Research Inst). We would like two outcomes from this meeting: (a) a concise meeting report outlining how ABBIX beamlines will help to address outstanding problems in life sciences, and (b) a list of potential first experiments along with the corresponding research teams. For more information on the meeting, please contact Sonya Kiss, at skiss(a)bnl.gov. Note: Registration deadline is Tuesday, April 14, 2015. Organizers: Lonny Berman ABBIX Project Manager National Synchrotron Light Source II Brookhaven National Laboratory Sean McSweeney Structural Biology Program Manager Photon Sciences Division Deputy Director National Synchrotron Light Source II

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can mr_rosetta include twin_law?
by Ni, Fengyun 27 Mar '15

27 Mar '15

Hi everyone, When I run phenix.mr_rosetta, I use the following file (twin.eff) to add the twin_law with the keyword: refinement_params=twin.eff. I checked the output that the phenix.refine stage could recognize this file. But the autobuild step can not read this file and give the error information as follows, refinement.twinning { twin_law = "h,-h-k,-l" } Unable to read the parameters file twin.eff. Is there anyway to overcome this issue? Thank you very much in advance! Fengyun

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Refinement
by mohamed noor 25 Mar '15

25 Mar '15

Dear all I have a structure at 1.4 A currently with an Rfactor of 21/26 %. I notice from the plot by cycle that everytime the RMS bonds/angles reduce, the Rfactor increases a few percent. Is there any way of telling phenix.refine to not 'restrain' the model too much? I have already used automatic weighting. Also, RINGER identified a few alternate conformations, so I'm thinking that modeling this might account for a better model. However, as I have an NCS of 4, this can be tedious to do by hand, and AFAIK, phenix.refine does not create new conformations. Is there an alternative? Final question, some residues were flagged as having high B factors but not in all the copies. How do I deal with this? Some background: I initially had problems with refinement being stuck at 30-35 % in SG P 3 2 1 (as suggested by Pointless and Xtriage). However, the beamline scientist suggested that there could've been lattice translocation and that it is actually P 3. Reintegrating seems to have solved the problem. With integrated data up to 1.2 A, I tried cut-off at 1.4, 1.3 and 1.2 A. Together with CC1/2 and refinement results, I chose 1.4 A, but should I cut it a bit lower? Thanks.

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PhD position in Structural Biology in Norway
by Hans-Petter Hersleth 24 Mar '15

24 Mar '15

Dear all, A 3- or 4-year PhD position in Structural Biology / Biophysics / Biochemistry starting August 2015 is available at University of Oslo, Department of Biosciences, Section for Biochemistry and Molecular Biology in the Metalloprotein group. The project is in the field of structural biology, biophysics and biochemistry with an emphasis on protein crystallography and spectroscopy (UV-vis, Raman and EPR) in combination with other biochemical and biophysical methods. The project is dealing with different redox proteins involved in oxygen activation and electron transfer. The focus will be on some enzyme systems like ribonucleotide reductase and nitric oxide synthase, their reaction mechanism and redox activation pathways. More information about the project, position and application procedure is found on the website: http://uio.easycruit.com/vacancy/1352831/96323?iso=no Applicants must hold a Master's degree or equivalent in structural biology, bioinorganic chemistry, biochemistry, biophysics, protein crystallography or related fields. We are seeking a highly motivated candidate that should have skills and experience in working with proteins or bioinorganic molecules. It would be advantageous with hands-on experience within topics like cloning, protein expression, purification, crystallisation, protein crystallography, spectroscopy, bioinorganic chemistry, protein-protein interactions, enzyme kinetics and redox-, radical- and metalloproteins. Candiates without a Master's Degree have until 30 June 2015 to complete the final exam. Application deadline is 13th April 2015 through the website: http://uio.easycruit.com/vacancy/1352831/96323?iso=no For further information please contact: Dr. Hans-Petter Hersleth, (h.p.hersleth(a)ibv.uio.no) ---------------------------------------------------------------------------------------------- Hans-Petter Hersleth, PhD Project Leader, Researcher and Senior Lecturer Department of Biosciences, University of Oslo Section for Biochemistry and Molecular Biology P.O.Box 1066 Blindern, NO-0316 Oslo, Norway Phone: +47 2285 4631 Fax: +47 2285 4726 Mobile: +47 413 33 126 http://www.hersleth.org/ -----------------------------------------------------------------------------------------------

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on Phenix's "Generate "Table 1" for journal"
by Smith Liu 23 Mar '15

23 Mar '15

Dear All, With the Phenix refine PDB and mtz file, I just prepared a "Table 1" for journal with Phenix. Here I find something special, which I hope I can get your advice. First, for the "Total reflections" and "Multiplicity", they are empty (no data given). Wil you please tell me why? Secondly, it writes, "Statistics for the highest-resolution shell are shown in parentheses". Suppose my crystal resolution is 2.5-45.6, then the the highest-resolution value should be 2.5, rather than 45.6, right? In addition, what is the diffrence between highest-resolution shell in the Table 1 and highest-resolution bin in the "Results" of Phenix refine? What is R-merge, R-meas,CC1/2 and CC*? I can get these data from MOSFLM output mtz file. But is my images were processe by HKL, which I have no experience, then how can I get the R-merge, R-meas,CC1/2 and CC*? I am looking forward to getting your reply. Smith

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question related to phenix produced PDB file
by Dialing Pretty 21 Mar '15

21 Mar '15

Dear All, In my Phenix refine produced PDB file, I find in REMARK 3, there is a sentence "PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED): 42.3. Does 42.3 means 42.3%? Is it too high? I am looking forward to getting your reply. Dialing

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error message in phenix refine
by Almudena Ponce Salvatierra 20 Mar '15

20 Mar '15

Hi everyone, I have merged 3 mtz files into one and done successfully Molecular replacement with it. However when I try to refine, I get the following error message: "cctbx error: merge_equivalents_exact: imcompatible flags for hkl (0, 0, 16) (mismatch between Friedel pairs). How can I fix this? Thank you very much in advance. Best, Almudena -- Almudena Ponce-Salvatierra Macromolecular crystallography and Nucleic acid chemistry Max Planck Institute for Biophysical Chemistry Am Fassberg 11 37077 Göttingen Germany

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fixing rotamers with coot
by Benoît Masquida 19 Mar '15

19 Mar '15

Dear all, I am using Coot 0.7.2 and phenix 1.9-1692 on Ubuntu 13.10 and I have the following error message when I try to regularize zone, edit Chi angles or fix rotamer outliers. Error message :"Refinement setup failure. Failed to find restraints for : 'residue list' " Apparently a cif dictionary is missing that should be output by phenix to be used by coot. Does anyone has any idea? Thanks in advance. Benoit --

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on Phenix refine
by Smith Liu 19 Mar '15

19 Mar '15

Dear All, Will you please tell me which strategy of Phenix refine is for reciprocal space refinement? In the log, I often see "XYZ individual (reciprocal space)", will you please let me know whether "XYZ individual (reciprocal space)" is caused by "XYZ coordinates" or by "Optimize X-ray/sterochemistry weight"? Smith

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on the eff file
by Smith Liu 19 Mar '15

19 Mar '15

Dear All, Someone told me from the refine eff file, I can know what is my strategy for my refinement. I have run 2 refines with the same input files, For one refine, in the graphical interface I have checked xyz-coordinates, Real-space, Individual B-factors, Occupanies, Optimize X-ray/sterochemistry weight, Automaticaly orrect N/Q/H erros. For the other refine, I only checked XYZcoordinates, Real-space and Autonomously correct N/Q/H errors. I have checked the eff files from the 2 diffrent refines, but I cannot find any diffrence in the eff file. Thus will you please tell me how to find the diffrence in the 2 eff files? Or my strategies for each refine was recorded in the other files? I am looking forward to getting your reply. Smith

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the command to open the *.eff file
by Smith Lee 18 Mar '15

18 Mar '15

Dear All, Will you please tell me the command to open the *.eff file? I want to get the stratgies for my refinement. Smith

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phenix.development.optimize_model
by Colin Levy 18 Mar '15

18 Mar '15

Hi, I am running a Phenix development installation (dev_1977) and used the phenix.development.optimize_model option on a project of mine refined at 1.9Å. The output has certainly improved the R factors but I was curious as the refined model which is a rather globular structure has been refined utilising 17 TLS groups and anisotropic B factors. In its current state of development, how robust are these refinement choices and on what basis are they being determined? They differ somewhat from what I might have invoked manually? Many thanks, Colin Manchester Protein Structure Facility Dr. Colin W. Levy MIB G034 Tel. 0161 275 5090 Mob.07786 197 554 c.levy(a)manchester.ac.uk On 12/03/2015 15:19, "phenixbb-request(a)phenix-online.org" <phenixbb-request(a)phenix-online.org> wrote: >Send phenixbb mailing list submissions to > phenixbb(a)phenix-online.org > >To subscribe or unsubscribe via the World Wide Web, visit > http://phenix-online.org/mailman/listinfo/phenixbb >or, via email, send a message with subject or body 'help' to > phenixbb-request(a)phenix-online.org > >You can reach the person managing the list at > phenixbb-owner(a)phenix-online.org > >When replying, please edit your Subject line so it is more specific >than "Re: Contents of phenixbb digest..." > > >Today's Topics: > > 1. Announcement and call for abstracts: Structural > Bioinformatics microsymposium at ECM29, August 23-28, Rovinj, > Croatia (Capitani Guido (PSI)) > 2. how to correct residuess with missing atoms (Smith Liu) > 3. Re: how to correct residuess with missing atoms (Joel Tyndall) > 4. RESOLVE density modification (Mark A Saper) > 5. Re: RESOLVE density modification (Terwilliger, Thomas Charles) > 6. Nitric Oxide metal.edits not working? (Yarrow Madrona) > 7. Re: Nitric Oxide metal.edits not working? (Edward A. Berry) > 8. Group B factor refinement not working for low resolution data (??) > 9. Re: Group B factor refinement not working for low resolution > data (Pavel Afonine) > 10. Re: Group B factor refinement not working for low resolution > data (Phoebe A. Rice) > > >---------------------------------------------------------------------- > >Message: 1 >Date: Fri, 6 Mar 2015 13:29:51 +0000 >From: "Capitani Guido (PSI)" <guido.capitani(a)psi.ch> >To: "phenixbb(a)phenix-online.org" <phenixbb(a)phenix-online.org> >Subject: [phenixbb] Announcement and call for abstracts: Structural > Bioinformatics microsymposium at ECM29, August 23-28, Rovinj, Croatia >Message-ID: > <D324C9581FD3114280044EDC6357A3E51BCE66CD(a)MBX114.d.ethz.ch> >Content-Type: text/plain; charset="us-ascii" > >Dear Colleagues, > >The 29th European Crystallographic Meeting (ECM29), to be held on August >23-28 in Rovinj, Croatia, will feature a Structural Bioinformatics >microsymposium >(http://ecm29.ecanews.org/programme/microsymposia/#ms10). All structural >bioinformatics topics with relevance to macromolecular crystallography >are welcome. >Abstract submission (for oral or poster presentation) is available at >http://ecm29.ecanews.org/participate/abstract-submission/, with deadline >March 23. >The final program will encompass two 30-min talks from invited speakers, >three 20-min talks chosen from the submitted abstracts, and poster >presentations. >Looking forward to many interesting contributions; with best regards, > >Guido Capitani > > > >Dr. Guido Capitani >Paul Scherrer Institute >OFLC/110 >5232 Villigen PSI >Switzerland >guido.capitani(a)psi.ch >Tel. +41 56 310 47 22 >http://www.psi.ch/lbr/capitani_-guido >http://www.eppic-web.org > > > > > > >------------------------------ > >Message: 2 >Date: Sun, 8 Mar 2015 18:11:19 +0800 (CST) >From: "Smith Liu" <smith_liu123(a)163.com> >To: "phenixbb(a)phenix-online.org" <phenixbb(a)phenix-online.org> >Subject: [phenixbb] how to correct residuess with missing atoms >Message-ID: <46870f8b.b136.14bf8de1901.Coremail.smith_liu123(a)163.com> >Content-Type: text/plain; charset="gbk" > >Dear All, > >Is any function of Phenix or some other software which can be used to >correct residuess with missing atoms in the PDB file? > >I am looking forward to getting your reply. > >Smith >

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Ramachandran results from Structure_comparison tool
by Emilia C. Arturo (Emily) 18 Mar '15

18 Mar '15

Hello, I've just run the Structure comparison tool for the first time using phenix 1.9-1692. All the results tabs--except the Ramachandran tab--have per-residue values throughout the length of the ~450-residue sequence; the Ramachandran tab has values only through residue 429. The sequence file included with the run contains 453 residues. Each of the pdb files input to the run have between 445 and 450 residues each. Throughout the length of each model, all models are 100% sequence-identical to each other and to the sequence file. Is it a known bug, that the Ramachandran values are not output for all the residues for which there are values in the other tabs? Emily Arturo Ph.D. program in Biochemistry, Drexel Univ College of Medicine Jaffe lab, Fox Chase Cancer Center Philadelphia, PA

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labelit compatibility with mosflm
by Ursula Schulze-Gahmen 18 Mar '15

18 Mar '15

I tried to use LABELIT for the first time. I am using the version that comes with Phenix-dev-1951 (automatically installed through sbgrid). The program found some promissing solutions, but ends with the error: mosflm versions after 7.1.0 not supported It also doesn't seem to know ALS beamline 8.3.1 Any suggestions how to deal with this? Thanks Ursula -- Ursula Schulze-Gahmen, Ph.D. Project Scientist UC Berkeley, QB3 360 Stanley Hall #3220 Berkeley, CA 94720-3220 (510) 643 9491

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gridding of maps & coot
by Roger Martin 18 Mar '15

18 Mar '15

Hi, in making ccp4 formatted binary files readable by coot there are two *determine_gridding methods on the c++ side of cctbx ; *http://cctbx.sourceforge.net/current/c_plus_plus/namespacecctbx_1_1maptbx.html 1) template<typename IndexValueType>af::tiny< IndexValueType, 3 > determine_gridding (uctbx::unit_cell const &unit_cell, double d_min, double resolution_factor, af::tiny< IndexValueType, 3 > const &mandatory_factors=detail::one_one_one, IndexValueType max_prime=5, bool assert_shannon_sampling=true); 2) template<typename IndexValueType>af::tiny< IndexValueType, 3 > determine_gridding (uctbx::unit_cell const &unit_cell, double d_min, double resolution_factor, sgtbx::search_symmetry_flags const &symmetry_flags, sgtbx::space_group_type const &space_group_type, af::tiny< IndexValueType, 3 > const &mandatory_factors=detail::one_one_one, IndexValueType max_prime=5, bool assert_shannon_sampling=true); From the python side these get called within http://cctbx.sourceforge.net/current/python/cctbx.maptbx.html#crystal_gridd… __init__(self, unit_cell, d_min=None, resolution_factor=None, step=None, symmetry_flags=None, space_group_info=None, mandatory_factors=None, max_prime=5, assert_shannon_sampling=True, pre_determined_n_real=None); In phenix code it appears that only resolution_factor is ever set and internally then only the first determine_gridding method ever gets called. For numerous space groups these grid dimensions aren't compatible with symmetry operations and if symmetry operations are added to the ccp4 binary file coot has issues with asu (asymmetric unit) fitting to the grid. http://www.ccp4.ac.uk/html/maplib.html If the symmetry operator equations are skipped then coot will read as if the map is P 1 and not know the space group and asu's. symmetry_flags would have to be set to something non-None to call the second method. And if the second determine_gridding method(which is spacegroup aware) would be used, the grid dimensions are compatible with symmetry operators and coot reads and works with the asu's (and my own custom code is also happy). For all the maps produced from phenix.refine runs I've examined they have a space group number between 1 and 230, no symmetry operators included and grid dimensions from the first determine_gridding method. Now there are a number of space groups which have different axes chosen. For example 155 can be R=Rhombohedral http://img.chem.ucl.ac.uk/sgp/large/155az1.htm or H=Hexagonal http://img.chem.ucl.ac.uk/sgp/large/155bz1.htm axes. The symmetry operators identify which one or some systems prepend a number on the space group number such as 155 -> 1155. But coot (0.7 or 0.8.1) doesn't respond to that; only to the symmetry operators I suppose because the symmetry operators are the most trustworthy. The functionality is already in cctbx. Is there a reason the second determine_gridding method(spacegroup aware) is not used by phenix? And a reason symmetry operator equations are not added to the output ccp4 binary files? How should a ccp4 binary know the R or H axes of the space group? (according to its format http://www.ccp4.ac.uk/html/maplib.html) -Roger

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Abstract deadline April 15 for Intl Conf. on Structural Genomics 2015 "Deep Sequencing Meets Structural Biology" & Early Bird Registration deadline March 31
by Terwilliger, Thomas Charles 15 Mar '15

15 Mar '15

Abstract deadline April 15 for Intl Conf. on Structural Genomics 2015 "Deep Sequencing Meets Structural Biology" & Early Bird Registration deadline March 31 15-Mar-2015 Dear Colleagues, It's time to register for the International Conference on Structural Genomics 2015 "Deep Sequencing Meets Structural Biology", which will be held on the campus of the Weizmann Institute of Science in Rehovot, Israel June 7-11, 2015! The Abstract deadline is April 15, 2015. This conference is intended to foster international collaboration and to provide an overview for the most recent developments in Structural Biology and Structural Genomics and future impacts on biology, medicine and disease. See the web site at: http://www.weizmann.ac.il/conferences/ICSG2015 and the poster at: https://www.dropbox.com/s/i1s3hsg7a0chqi2/ICSG2015_Poster.pdf?dl=0 The scientific topics to be covered in ICSG 2015 include: · Deep sequencing for modeling and refinement of macromolecular structures · Membrane protein structure and function using complementary methods · Technological advances in XFEL, Cryo-EM, NMR, SAXS, MS, MX and macromolecular complexes · Combining low and high resolution data and modeling for structural biology · Synergistic use of 3D structures and deep sequencing to realize personalized medicine · Protein design and deep sequencing · Cancer, antibiotic resistance and drug discovery In order to widen the opportunities for younger researchers, we have organized satellite workshops before ICSG 2015 (during the day on June 7, 2015). These include: · Cryo-EM developments for structural biology [Sponsored by FEI] · Approaches to the translation of deep sequencing data into three-dimensions [Ron Unger; Sponsored by Instruct] · PHENIX: Automated determination of molecular structures [Tom Terwilliger, Li-Wei Hung & Pavel Afonine] · HKL3000: From X-ray diffraction images to structure determination in minutes [Wladek Minor] · Protein expression and characterization workshop [Tamar Unger & Yoav Peleg] · Proteopedia: A Scientific Wiki Bridging the Rift Between 3D Structure & Function [Jaime Prilusky & Joel L. Sussman] Five oral presentations will be chosen from the posters, and six poster prizes will be awarded, so be sure to submit your abstracts by April 15, 2015! Speakers include: Arie Admon (Haifa) Lucia Banci (Florence) Pamela J. Bjorkman (Pasadena) Samir K. Brahmachari (Delhi) Susan Buchanan (Bethesda) Martin Caffrey (Dublin) Keith Dunker (Indianapolis) Mark Gerstein (New Haven) Wayne Hendrickson (New York) Eran Hodis (Boston) Yvonne Jones (Oxford) Roger Kornberg (Stanford) Luhua Lai (Beijing) Michael Levitt (Stanford) Michal Linial (Jerusalem) Abraham Minsky (Rehovot) Ken Mok (Dublin) John Moult (Rockville) Nathan Nelson (Tel Aviv) Stefan Raunser (Dortmund) Monica Roth (Piscataway) Dinakar M. Salunke (Gurgaon) Eran Segal (Rehovot) Philipp Selenko (Berlin) Sachdev Sidhu (Toronto) Henry Sobell (Rochester) Rotem Sorek (Rehovot) Jan Steyaert (Brussels) Shamil Sunyaev (Boston) Dan Tawfik (Rehovot) Janet Thornton (Hinxton) The FEBS National Lecturer Gunnar von Heijne (Stockholm) Soichi Wakatsuki (Stanford) Shigeyuki Yokoyama (Yokohama) Ada Yonath (Rehovot) Mingjie Zhang (Hong Kong) We are looking forward to welcoming you to the Weizmann Institute in the June of 2015! Sincerely yours, ICSG 2015 Local Organizing Committee Joel L. Sussman, Gideon Schreiber, Tamar Unger and Israel Silman, Weizmann Institute ICSG 2015 International Program Committee Cheryl Arrowsmith, (Structural Genomics Consortium, Toronto) Lucia Banci, (University of Florence, Florence) Jacqui Beckmann, (Swiss Institute of Bioinformatics, Lausanne) Mark Gerstein, (Yale University, New Haven) Yvonne Jones, (University of Oxford, Oxford) Luhua Lai, (Peking University, Beijing) Katsumi Maenaka, (Hokkaido University, Sapporo) Gaetano Montelione, (Rutgers University, Piscataway) John Moult, (Institute for Bioscience and Biotechnology Research, Rockville) John Norvell, Maryland (Founding Director of the NIGMS Protein Structure Initiative) Dinakar Salunke, (Regional Centre for Biotechnology, Gurgaon) Gideon Schreiber, (Weizmann Institute, Rehovot, Israel) Joel L. Sussman, (Weizmann Institute, Rehovot, Israel) Janet Thornton, (European Bioinformatics Institute, Hinxton) Gunnar von Heijne, (Stockholm Bioinformatics Center, Stockholm) Ron Unger, (Bar-Ilan University, Ramat Gan) Shoshana Wodak (University of Toronto, Toronto) International Structural Genomics Organization Executive Committee Lucia Banci Aled Edwards Jennifer Martin Joel Sussman Tom Terwilliger Shigeyuki Yokoyama

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viewing ligand_identification output files
by Emilia C. Arturo (Emily) 14 Mar '15

14 Mar '15

Hello, I've recently used--for the first time--phenix's ligand_identification tool via the GUI, and am now examining the output files. I'm writing to ask for advice on how to view the map and models using Coot. I could open the 'model_RSR_FITTED_###.pdb' file with PyMOL, and I could inspect where in the model the fit ligand sits, but I prefer to look at the map using Coot. At this point I have two problems: First, when I Auto Open the resolve.mtz file in Coot, the model I'd input to ligand_identification is clearly not aligned with the map. What could have happened here? And how might I fix it? Second, the same 'model_RSR_FITTED_###.pdb' file I opened with PyMOL has in Coot just one chain, and that contains only the fit ligand. Thanks in advance for any input, Emily Arturo Ph.D. program in Biochemistry, Drexel Univ College of Medicine Jaffe lab, Fox Chase Cancer Center Philadelphia, PA

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Group B factor refinement not working for low resolution data
by 李翔 12 Mar '15

12 Mar '15

Hi, I am working on my ~6A data with molecular replacement method. The MR works out and after rigid body and xyz refinement the result is OK. However, when I tried the ADP refinement with Group B factor option in PHENIX GUI, the R factor significantly increased as well as the B-factor. Any expert can help me to take a look and give some suggestions please? Thank you very much for your help! Sincerely, Xiang -- Li Xiang Department of chemistry, University of Michigan Email：lixiang1642(a)gmail.com

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Nitric Oxide metal.edits not working?
by Yarrow Madrona 09 Mar '15

09 Mar '15

Hello, I am running phenix version 1.9-1692. I have restrains for a nitric oxide ligand that I have used previously to refine a heme iron-NO linked structure. I have pasted them below. For some reason. The NO always gets moved a little to far from the iron. Here is a coot screen shot: https://www.dropbox.com/s/85c1ad2kecwebij/coot.png?dl=0 Can someone please help me resolve this issue? Thank you. -Yarrow ---------------------------------------------------------------------------------- metal edits file: refinement.geometry_restraints.edits { bond { action = *add atom_selection_1 = name FE and chain A and resname FE and resseq 499 atom_selection_2 = name N and chain A and resname NMO and resseq 510 distance_ideal = 1.75 sigma = 0.1 } } refinement.geometry_restraints.edits { angle { action = *add atom_selection_1 = name FE and chain A and resname FE and resseq 499 atom_selection_2 = name N and chain A and resname NMO and resseq 510 atom_selection_3 = name O and chain A and resname NMO and resseq 510 angle_ideal = 160 sigma = 5 } } refinement.geometry_restraints.edits { bond { action = *add atom_selection_1 = name FE and chain B and resname FE and resseq 499 atom_selection_2 = name N and chain B and resname NMO and resseq 510 distance_ideal = 1.75 sigma = 0.1 } } refinement.geometry_restraints.edits { angle { action = *add atom_selection_1 = name FE and chain B and resname FE and resseq 499 atom_selection_2 = name N and chain B and resname NMO and resseq 510 atom_selection_3 = name O and chain B and resname NMO and resseq 510 angle_ideal = 160 sigma = 5 } } --------------------------------------------------------------------- CIF file # data_comp_list loop_ _chem_comp.id _chem_comp.three_letter_code _chem_comp.name _chem_comp.group _chem_comp.number_atoms_all _chem_comp.number_atoms_nh _chem_comp.desc_level NMO NMO "nitric oxide " ligand 2 2 . # data_comp_NMO # loop_ _chem_comp_atom.comp_id _chem_comp_atom.atom_id _chem_comp_atom.type_symbol _chem_comp_atom.type_energy _chem_comp_atom.partial_charge _chem_comp_atom.x _chem_comp_atom.y _chem_comp_atom.z NMO N N N . -0.1324 -0.0924 0.5896 NMO O O O . 0.1324 0.0924 -0.5896 # loop_ _chem_comp_bond.comp_id _chem_comp_bond.atom_id_1 _chem_comp_bond.atom_id_2 _chem_comp_bond.type _chem_comp_bond.value_dist _chem_comp_bond.value_dist_esd NMO N O double 1.223 0.020 # loop_ _chem_comp_plane_atom.comp_id _chem_comp_plane_atom.plane_id _chem_comp_plane_atom.atom_id _chem_comp_plane_atom.dist_esd NMO plan-1 N 0.020 NMO plan-1 O 0.020

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RESOLVE density modification
by Mark A Saper 09 Mar '15

09 Mar '15

I am trying to run RESOLVE density modification with the output of a SAD Phaser run (dev-1965). There are 3 input files: high resolution/experimental F’s and I’s, map coefficients and phases, and sequence. I consistently get this error: … ******************************************************************************** Failed to carry out AutoBuild_set_up_build: For finding NCS from sites an MTZ file is required ******************************************************************************** I do not know which MTZ file is being referred to. I have tried entering NCS as blank, 1, or turning it off in the NCS… options panel. I also tried including the substructure PDB file. Any suggestions? -Mark _________________________________ Mark A. Saper, Ph.D. Associate Professor of Biological Chemistry, University of Michigan Ann Arbor MI 48109-1055 U.S.A. saper(a)umich.edu phone (734) 764-3353 fax (734) 764-3323

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how to correct residuess with missing atoms
by Smith Liu 08 Mar '15

08 Mar '15

Dear All, Is any function of Phenix or some other software which can be used to correct residuess with missing atoms in the PDB file? I am looking forward to getting your reply. Smith

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Announcement and call for abstracts: Structural Bioinformatics microsymposium at ECM29, August 23-28, Rovinj, Croatia
by Capitani Guido (PSI) 06 Mar '15

06 Mar '15

Dear Colleagues, The 29th European Crystallographic Meeting (ECM29), to be held on August 23-28 in Rovinj, Croatia, will feature a Structural Bioinformatics microsymposium (http://ecm29.ecanews.org/programme/microsymposia/#ms10). All structural bioinformatics topics with relevance to macromolecular crystallography are welcome. Abstract submission (for oral or poster presentation) is available at http://ecm29.ecanews.org/participate/abstract-submission/, with deadline March 23. The final program will encompass two 30-min talks from invited speakers, three 20-min talks chosen from the submitted abstracts, and poster presentations. Looking forward to many interesting contributions; with best regards, Guido Capitani Dr. Guido Capitani Paul Scherrer Institute OFLC/110 5232 Villigen PSI Switzerland guido.capitani(a)psi.ch Tel. +41 56 310 47 22 http://www.psi.ch/lbr/capitani_-guido http://www.eppic-web.org

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