September 2018 - phenixbb - phenix-online.org

Deadline for Diamond XChem proposals next Wednesday
by Frank von Delft 28 Sep '18

28 Sep '18

Dear aspiring drug discoverers A reminder that the deadline for the next round of proposals for XChem fragment screening is *next Wednesday*, as part of Diamond's general Call for Proposals. Full details <https://www.diamond.ac.uk/Instruments/Mx/Fragment-Screening/Applying-for-XC…> are on the XChem webpage <https://www.diamond.ac.uk/Instruments/Mx/Fragment-Screening.html>. *NEW*: we are now inviting a broader set of projects: * Two-tiered access: if you have an exciting system but don't yet know how to progress it, you can ask for exploratory access ("Tier 1") * BAG access: several labs and collaborations have requested increased flexibility, and they can now apply as Block Allocation Groups. If you wish to submit this route, I suggest you also email me directly. Happy screening! Frank -- Prof Frank von Delft Associate Professor Principal Investigator: Protein Crystallography Structural Genomics Consortium Oxford University +44 1865 617583 (office: W,F) Principal Beamline Scientist: I04-1 Diamond Light Source +44 1235 778997 (office: M,T,T) +44 7471 026103 (mobile)

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Postdoctoral Position available - University of Warsaw, Poland
by Paulina Dominiak 27 Sep '18

27 Sep '18

Dear colleagues, I would like to draw your attention to a post-doctoral position available in my research group. For all the details, please see the complete call text below. If you need any further information, please contact me directly. Best regards, Paulina Dominiak An announcement for Post-doctoral position Position of Post-doctoral Researcher in the OPUS project entitled "More accurate models of the electrostatic potential of biological macromolecules and organic crystals necessary for proper interpretation of data from cryo-electron microscopy and from electron diffraction – feasibility study" financed by NCN is open for application. Project leader: dr hab. Paulina M. Dominiak, prof. UW Available positions: 1 Project description: The Dominiak’s group works on developing new methods of electron density modelling for X-ray and electron crystallography, chemistry and structural biology. The project aims at development of new models of electrostatic potentials for electron crystallography. The models will considerably deviate from the conventional spherical independent atom model currently used. With new models more information should be extracted from electron scattering experiments on biological macromolecules and organic crystals, and improved quality of geometric data and quantitative estimates of molecular electrostatic potentials should become easily available. For further information see http://cnbch.uw.edu.pl and http://www.chem.uw.edu.pl. Position description: You will be mainly responsible for development and verification of new databanks of atomic electron densities on the basis of existing procures published in: Acta Cryst. 2012, A68, 139; JCTC, 2014, 10, 1652; ChemPhysChem, 2016, 17, 2455; Acta Cryst. 2017, B73, 610. We are looking for motivated candidates with: -a PhD degree in chemistry or related fields at the moment of starting the job (PhD defended not later than 7 years ago according to NCN regulations, see www.ncn.gov.pl) -experience in crystallography OR/AND computational chemistry proven by scientific article publications -knowledge of macromolecular crystallography OR/AND proven experience in high-resolution x-ray diffraction charge density measurements -basic programing skills OR/AND practical experience in script usage/writing and proven ability to work with large amount of data -experience with structure refinement against electron diffraction or single particle cryoEM data will be an advantage -well-developed analytical skills -good knowledge of written and spoken English -written and spoken presentation skills -ability to work as part of a team We offer: a temporary employment contract with the University of Warsaw: -full time position -a salary approx. 5000 PLN per month (net salary, after taxes and other deductions) -for one year with a possible extension upto three years -appointment starting in November 2018 (the competition may be repeated until a suitable candidate who fulfils all requirements is found) Required documents (in English): -Curriculum Vitae (including list of scientific articles, conference presentations, awards, international internships, scholarships, workshops, participation in research projects), -a motivation letter (What are your scientific interests? What are your key strengths and achievements? Why do you want to work in the project?), -information on the processing of personal data (see the text below), -two recommendation letters (at least one from direct supervisor) sent by the referees directly to prof. Dominiak (pdomin(a)chem.uw.edu.pl). Please submit the documents no later than 26 October 2018 to: pdomin(a)chem.uw.edu.pl (PDF is the preferred format). E-mail entitled: “Post-Doc position” Selected candidates may be invited by e-mail, no later than 30 October 2018, to participate in interview. The interview will take place on 5 or 6 November 2018 in person or via Skype or phone. The results of the competition will be delivered to selected candidates by e-mail till 15 November 2018. In the case of not signing the contract by the candidate, due to the resignation, we reserve the right to choose the next candidate from the ranking list. INFORMATION ON THE PROCESSING OF PERSONAL DATA INFORMATION CLAUSE Pursuant to Article 13 of Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation), University of Warsaw hereby informs: 1. The Controller of your personal data is the University of Warsaw with its registered office at Krakowskie Przedmieście 26/28, 00-927 Warszawa; 2. The Controller has designated the Data Protection Officer who supervises the processing of personal data, and who can be contacted via the following e-mail address: iod(a)adm.uw.edu.pl; 3. Your personal data will be processed for the purpose of carrying out a recruitment process and selecting an employee and concluding a contract for employment at the University of Warsaw; 4. The provided data will be processed pursuant to Article 221 § 1 of the Act of 26 June 1974 Labor Code (uniformed text: Dz.U. of 2018, item 917) and your consent for processing of personal data; 5. Provision of data in the scope stipulated in the Labor Code is mandatory, and the remaining data are processed according to your consent for processing of personal data; 6. The data will not be shared with any external entities; 7. The data will be stored until you withdraw your consent for processing of personal data; 8. You have the right to access your personal data, to rectify, erase them, restrict their processing, object to processing, and to withdraw the consent at any time; 9. You have the right to lodge a complaint to the President of the Office for the Protection of Personal Data. CONSENT CLAUSE I hereby consent to have my personal data processed by the University of Warsaw with its registered office at ul. Krakowskie Przedmieście 26/28, 00-927 Warszawa for the purpose of carrying out a recruitment process and selecting an employee and concluding a contract for employment at the University of Warsaw. I have been informed of my rights and duties. I understand that provision of my personal data is voluntary. ……………………………………………. ………………………………………………… (place and date) (signature of the person applying for employment) -- dr hab. Paulina M. Dominiak, prof. UW Group Leader Electron Density Modelling Group Laboratory for Structural and Biochemical Research (LBSBio) Biological and Chemical Research Centre Department of Chemistry University of Warsaw ul. Zwirki i Wigury 101 02-089 Warszawa, Poland Room: 3.125 E-mail: pdomin(a)chem.uw.edu.pl Phone: (48) 22 55 26 714

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polder map with twinning
by James Fraser 26 Sep '18

26 Sep '18

Hi all, I'm trying to make a polder map for a dataset that is refined with a twin law. As such, the R-factors reported during the polder procedure are much higher than those I get out of refinement. Is there a way to pass the twin law as in the composite omit procedure ( https://www.phenix-online.org/documentation/reference/composite_omit_map.ht… )? Thanks! J -- -- James Fraser - http://www.fraserlab.com - @fraser_lab jaimefraser(a)gmail.com // jfraser(a)fraserlab.com (please do NOT use james.fraser(a)ucsf.edu)

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Phenix version 1.14 released
by Paul Adams 25 Sep '18

25 Sep '18

The Phenix developers are pleased to announce that version 1.14 of Phenix is now available (build 1.14-3260). Binary installers for Linux, Mac OSX, and Windows platforms, and the source installer, are available at the download site: http://phenix-online.org/download/ Highlights for this version: - Reorganization, updates and addition of cryo-EM tools: - phenix.mtriage - assess map and model quality - phenix.auto_sharpen - map sharpening - phenix.map_symmetry - identify symmetry in maps - phenix.map_box - cut out unique parts of maps - phenix.combine_focused_maps - combine different maps - phenix.dock_in_map - automatically place an atomic model into a map - phenix.map_to_model - automatically build atomic model from a map - phenix.sequence_from_map - identify sequence from a map - phenix.real_space_refine - improved refinement of models - phenix.validation_cryoem - separate tool for comprehensive validation of models and maps - phenix.cablam_idealization - Tool to automatically fix Cablam outliers - eLBOW - better support for metals and metal clusters - added plugin for QM package Orca - Phaser-2.8.2 - bugfixes - Phassade substructure search when starting from seed substructure - fix crash in MR_ATOM - problems with cumulative intensity distribution for extremely weak data - improve computation and presentation of data information content - Performance improvements - NCS search - Generation of secondary structure restraints - Clashscore calculation - AmberPrep is more robust - Restraints for ARG improved - New Phenix video tutorials - GUI - New section in main window for cryo-EM tools - Separate validation GUI for cryo-EM structures - Added phenix.map_symmetry - Added phenix.dock_in_map - Added phenix.map_to_structure_factors - Added phenix.combine_focused_maps - Added phenix.sequence_from_map - phenix.ligand_identification: - Added an option to generate ligand library based on sequence and structural homologs of the input pdb model. For a full list of changes see: http://www.phenix-online.org/documentation/CHANGES Please note that this publication should be used to cite use of Phenix: PHENIX: a comprehensive Python-based system for macromolecular structure solution. P. D. Adams, P. V. Afonine, G. Bunkóczi, V. B. Chen, I. W. Davis, N. Echols, J. J. Headd, L.-W. Hung, G. J. Kapral, R. W. Grosse-Kunstleve, A. J. McCoy, N. W. Moriarty, R. Oeffner, R. J. Read, D. C. Richardson, J. S. Richardson, T. C. Terwilliger and P. H. Zwart. Acta Cryst. D66, 213-221 (2010). Full documentation is available here: http://www.phenix-online.org/documentation/ There is a Phenix bulletin board: http://www.phenix-online.org/mailman/listinfo/phenixbb/ Please consult the installer README file or online documentation for installation instructions. Direct questions and problem reports to the bulletin board or: help(a)phenix-online.org and bugs(a)phenix-online.org Commercial users interested in obtaining access to Phenix should visit the Phenix website for information about the Phenix Industrial Consortium. The development of Phenix is principally funded by the National Institute of General Medical Sciences (NIH) under grant P01-GM063210. We also acknowledge the generous support of the members of the Phenix Industrial Consortium. -- Paul Adams Division Director, Molecular Biophysics & Integrated Bioimaging, Lawrence Berkeley Lab Division Deputy for Biosciences, Advanced Light Source, Lawrence Berkeley Lab Adjunct Professor, Department of Bioengineering, U.C. Berkeley Vice President for Technology, the Joint BioEnergy Institute Laboratory Research Manager, ENIGMA Science Focus Area Building 33, Room 347 Building 978, Room 4126 Tel: 1-510-486-4225, Fax: 1-510-486-5909 http://cci.lbl.gov/paul Lawrence Berkeley Laboratory 1 Cyclotron Road BLDG 33R0345 Berkeley, CA 94720, USA. Executive Assistant: Louise Benvenue [ LBenvenue(a)lbl.gov ][ 1-510-495-2506 ] --

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TER card only at the end of polymer chains of pdb file
by Maxime Cuypers 25 Sep '18

25 Sep '18

Hello, The pdb deposition server only allows deposition of pdb files that have a TER card at the end of polymer chains. But phenix add a ter card at the end of each chain, regardless of the content or whether or not the TER card was present before refinement or not. Would it be possible to have this automagically handled by phenix.refine so the user does not encur the frustrating systematic error during deposition and need to edit the pdb file every time a 'final refinement' is tested for validation ? does that make sense? cheerios to all, Maxime

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Fw: AsCA 2018 / CRYSTAL 32: Early bird Closing
by Christopher Squire 25 Sep '18

25 Sep '18

?? [https://az659834.vo.msecnd.net/eventsairseasiaprod/production-uoaevents-pub…] Dear Colleagues, Early bird closing 2 October 2018 A friendly reminder that early bird rates to attend the AsCA 2018/CRYSTAL 32 conference will finish on 2 October 2018. Register today using (http://asca2018.org/registration/) to secure the discounted rate. The conference will run from 2-5 December 2018. Keep up-to-date with our conference programme<http://asca2018.org/programme/>, outstanding lineup of workshops<http://asca2018.org/workshops/>, and speakers<http://asca2018.org/speakers/>. Don't forget to get in early and book your accommodation<http://asca2018.org/accommodation/> too! We look forward to meeting you in Auckland. Kind regards, Dr. Christopher Squire (University of Auckland), Professor Ted Baker (University of Auckland), Professor Kurt Krause (University of Otago) and the AsCA 2018/CRYSTAL 32 Committee http://asca2018.org/ [https://az659834.vo.msecnd.net/eventsairseasiaprod/production-uoaevents-pub…]

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Rfree set with twin refinement
by Matthew Bick 23 Sep '18

23 Sep '18

Hello PhenixBB I am dealing with a structure that is twinned and would like to ensure that the Rfree set I'm using is unbiased. This is what I have done so far. - Generated an initial model after Phaser MR using Autobuild. The input "Experimental Data" for autobuild was an XDS_ASCII.hkl file from data processed with XDS (along with the phaser output mtz as the "initial map"). Autobuild generates the file "exptl_fobs_phases_freeR_flags.mtz" containing the Rfree set, which I have used for all subsequent rounds of Phenix.refine. - I have built the model to completion with Coot and Phenix.refine, without applying the twin law. Only at the final round of refinement did I apply twin refinement, and it is obvious that the data is twinned (Xtriage also suggests twinning). My question - when the Rfree is established during Autobuild, does Phenix take into account all of the possible twin laws, so that the free and working sets are not related in any way by the possible twin laws? I believe Phenix does do this, but I would like to make sure. Space group is P 1 21 1 and the twin law is pseudo-merohedral h,-k,-h-l, in case those are relevant. Thank you. Matthew Bick

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Recruiting fragment/XChem crystallographers
by Frank von Delft 22 Sep '18

22 Sep '18

Hi all - We have vacancies at SGC (in my and Prof. Paul Brennan's groups) for crystallographers interested in driving a series of new genetically validated targets (inflammation and Alzheimers) from gene to XChem fragment screening and beyond to potency, and helping figure out how to do all of this a lot better than we currently can. Link is here <https://www.recruit.ox.ac.uk/pls/hrisliverecruit/erq_jobspec_version_4.disp…>, and deadline is in two weeks (October 5th). Frank -- Prof Frank von Delft Associate Professor Principal Investigator: Protein Crystallography Structural Genomics Consortium Oxford University +44 1865 617583 (office: W,F) Principal Beamline Scientist: I04-1 Diamond Light Source +44 1235 778997 (office: M,T,T) +44 7471 026103 (mobile)

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Secondary structure restraints video tutorial
by Dorothee Liebschner 14 Sep '18

14 Sep '18

Dear Phenix users, This is an update for the Phenix video tutorials. We have a new tutorial explaining the use of secondary_structure_restraints <https://www.phenix-online.org/documentation/reference/secondary_structure.h…>, a type of restraints especially useful at low resolution (lower than 3Å, cryo-EM map or X-ray data). References: Programming new geometry restraints: parallelity of atomic groups. Sobolev OV et al. J. Appl. Cryst. 48, 1130-1141 (2015). https://doi.org/10.1107/S1600576715010432 Use of knowledge-based restraints in phenix.refine to improve macromolecular refinement at low resolution. Headd JJ et al. Acta Cryst. D68, 381-390 (2012). https://doi.org/10.1107/S0907444911047834 Feedback about the videos is very welcome. Write an email to tutorials @phenix-online.org or use the comment section on YouTube. If you want to see a tutorial about a certain (Phenix-related) topic, let us know. Best wishes, The Phenix team ------------------------------- Overview of tutorials: https://www.phenix-online.org/documentation/reference/tutorial_channel.html You can also browse the videos on the Phenix Tutorial YouTube channel: https://www.youtube.com/c/phenixtutorials (To see subtitles, hit the cc (closed captions) button in the right bottom of the video screen. Subscribe to see the tutorial videos in your YouTube subscription feed. To get notifications about new videos, tap the bell button, which is next to the "subscribe" button.)

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submission of neutron structure containing "H" atoms on the pdb database problematic
by Maxime Cuypers 11 Sep '18

11 Sep '18

Dear all, i was wondering if others have encountered the same problems with the PDB database curation rules or if this is a first. I am trying to submit a neutron structure with 'free' H atoms (protons) clearly identified. (not D atoms here), this is a situation similar to how D atoms can be reported in a pdb neutron structure close to a carboxylic residue or other situation like in the D‐xylose isomerase (XI). I have first tried to submit the neutron structure with the H atoms part of the complex molecules nearby but i faced refusal and was asked to make it as simple 'H' atoms. once i had done the 'free' H atoms version of the pdb, the structure was again refused by curators because there is no library available to the pdb curators to accept such H atoms. I was explained that it had been decided to ban the 'H' atom only coordinate from depositions some years ago. What would you recommand me to do to get the structure deposited and curated keeping the valid coordinates of the H atoms in the pdb file? PS: this is not fantasy. Dr. Maxime Cuypers

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