- phenixbb - phenix-online.org

RNA sugar pucker
by Benoît Masquida 08 Feb '14

08 Feb '14

Hello everyone, Does someone know how to define the sugar pucker in eLBOW? I am trying to force a C3' endo conformation for GDP. Thanks for your help. Benoit -- Benoît Masquida Chargé de Recherche CNRS GMGM, UMR 7156 GMGM tel: +33 3 68 85 14 81 fax: +33 3 68 85 13 65 IPCB, 21, rue René Descartes 67084 Strasbourg b.masquida(a)unistra.fr

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Meeting Announcement: Northwest Crystallography Workshop
by Dale Tronrud 07 Feb '14

07 Feb '14

(Pacific) Northwest Crystallography Workshop http://oregonstate.edu/conferences/event/nwcw2014/ June 20-22, 2014 Registration is now open for this year's edition of the Northwest Crystallography Workshop. It is being hosted at Oregon State University in Corvallis in the heart of the Willamette Valley surrounded by wine country, wildlife refuges, and with both the Cascade Mountains and the Pacific Ocean within easy driving distance. It can be easily accessed from either the Portland or Eugene airports. This biennial meeting has been held at various locations in the Pacific Northwest since 1981. It has always proven to be a great venue to meet other researchers in the region who are interested both in using macromolecular crystallography to solve structures and in developing and enhancing methods. The "workshop" part of the name will be taken seriously. We will have talks and posters with priority for speaking slots given to students and post-docs who focus on methodologies or interesting structure determination stories, and/or how structural observations provide insight into function and biology. There will be a reception on Friday evening. On Saturday there will be talks during the day and a banquet followed by a keynote address in the evening. Talks will continue on Sunday morning with the workshop wrapping-up at noon. A light lunch will be served on Saturday and a boxed lunch will be available on Sunday. Register today and get your abstracts submitted anytime between now and the April 30 abstract deadline. We've tried to keep registration costs low and early registration (through April 30) is $75 for students and $100 for others. Reasonably priced on-campus dormitory housing is available and must be arranged at the time of registration. Special rates at two local hotels have been arranged for those who want to book their own lodgings. We look forward to a great meeting and celebration of the International Year of Crystallography. Dale and Andy Dale E. Tronrud and P. Andrew Karplus Department of Biochemistry & Biophysics 2011 ALS Bldg Oregon State University Corvallis, OR 97331 USA

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how to remove hydrogen from pdb
by Afshan Begum 07 Feb '14

07 Feb '14

Dear Experts, Could you kindly tell me how can i remove hydrogen from my coordinate. Actually i refine my structure with phenix along all hydrogen now its almost done but before submitting the molecule into PDB data bank i want to remove hydrogen from the coordinate which i do not know how to do, suggestion would be appreciated Best Regards AFSHAN =========================================== Dr. Afshan Begum

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weight_selection_criteria
by Mark A Saper 06 Feb '14

06 Feb '14

Can anyone explain what the weight_selection_criteria parameters (see below)? How do they interact with other weights. Are they still used if I set optimize_xyz_weight=TRUE? I'm using dev-1616. target_weights optimize_xyz_weight= False optimize_adp_weight= False wxc_scale= 0.5 wxu_scale= 1.0 wc= 1.0 wu= 1.0 fix_wxc= None fix_wxu= None shake_sites= True shake_adp= 10.0 regularize_ncycles= 50 verbose= 1 wnc_scale= 0.5 wnu_scale= 1.0 rmsd_cutoff_for_gradient_filtering= 3.0 force_optimize_weights= False weight_selection_criteria bonds_rmsd= None angles_rmsd= None r_free_minus_r_work= None r_free_range_width= None mean_diff_b_iso_bonded_fraction= None min_diff_b_iso_bonded= None Thanks, Mark _________________________________ Mark A. Saper, Ph.D. Associate Professor of Biological Chemistry, University of Michigan c/o Biophysics, Chem 3040 930 N University Ave Ann Arbor MI 48109-1055 U.S.A. saper(a)umich.edu phone (734) 764-3353 fax (734) 764-3323

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phenix version 1.8.4
by Rosario Recacha 06 Feb '14

06 Feb '14

Hello, I installed the last version if phenix in ubuntu and whe I want to run it I receive the next message: ImportError: libjpeg.so.62: cannot open shared object file: No such file or directory I installed older versions in other computers following the same indications, and never I have had problems. Thanks in advance. Kind Regards, Rosario

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phenix.autosol and phenix.hyss now optimized for weak SAD data
by Terwilliger, Thomas C 06 Feb '14

06 Feb '14

Hi Phenix users! You might notice some big differences in HySS and AutoSol in the new 2014 versions of Phenix (starting with current nightly builds and the soon-to-be-released Phenix-1.8.5). The big changes are parallelization, the use of Phaser completion in HySS, iterative Phaser completion using maps and models in AutoSol, and on-the-fly optimization of parameters in AutoSol for cases with weak anomalous signal. Now HySS and AutoSol can solve structures with very weak SAD phase information that previous versions could not solve. More details will be in the Phenix newsletter that will come out shortly! You can see documentation on the new HySS at: http://phenix-online.org/version_docs/dev-1613/hyss.htm#anch8 and on the new AutoSol at: http://phenix-online.org/version_docs/dev-1613/autosol.htm#anch118 --Tom Terwilliger, Randy Read, Gábor Bunkóczi, Nat Echols

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Computational Crystallography Newsletter - Volume 5, Number 1
by Nigel Moriarty 05 Feb '14

05 Feb '14

Dear Colleagues, I am pleased to announce the publication of the latest issue of the Computational Crystallography Newsletter: http://www.phenix-online.org/newsletter/ A listing of the articles and short communications is given below. Please note that the newsletter accepts articles of a general nature of interest to all crystallographers. Please send any articles to me at NWMoriarty(a)lbl.gov noting that there is a Word Template on the website to streamline production. Articles -------- FEL Detectors and ImageCIF Quantum Mechanics-based Refinement in Phenix/DivCon Short communications -------------------- Short Communications Phenix tools for interpretation of BIOMT and MTRIX records of PDB files Coping with BIG DATA image formats: integration of CBF, NeXus and HDF5 Fitting tips #7 - Getting the Pucker Right in RNA Structures Cheers Nigel -- Nigel W. Moriarty Building 64R0246B, Physical Biosciences Division Lawrence Berkeley National Laboratory Berkeley, CA 94720-8235 Phone : 510-486-5709 Email : NWMoriarty(a)LBL.gov Fax : 510-486-5909 Web : CCI.LBL.gov

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Fwd: CCP4 crystallographic summer school in USA, at APS, June 24-July 2
by Nathaniel Echols 04 Feb '14

04 Feb '14

---------- Forwarded message ---------- From: Nukri Sanishvili <rsanishvili(a)anl.gov> To: <phenixbb(a)phenix-online.org> Date: Mon, 3 Feb 2014 18:12:09 -0600 Subject: CCP4 crystallographic summer school in USA, at APS, June 24-July 2 Dear Colleagues, We are pleased to announce the seventh annual CCP4 crystallographic summer school at Advanced Photon Source (APS), Argonne National Laboratory (ANL). All details can be found at http://www.ccp4.ac.uk/schools/APS-2014/index.php<https://mail.anl.gov/owa/redir.aspx?C=Qww5V7BVpECZd8A2kldFSf7_-DvC9NAIxdFZE…> *Title:*"CCP4 crystallographic school: From data collection to structure refinement and beyond" *Dates*: June 24 to July 2. *Site:* Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois (Near Chicago), USA *The school content: *Data collection workshop the first two days: beamline training and data collection on GM/CA@APS beamlines 23ID-B and 23ID-D. For data collection, only the participants' crystals will be used. Software workshop: The rest of the time after data collection will feature many modern crystallographic software packages taught by authors and other experts. It will be organized in three sections - lectures, tutorials and hands-on trouble-shooting. There will be model data sets available for tutorials but data, provided by participants, will have higher priority for the hands-on sessions. *Applicants*: Graduate students, postdoctoral researchers and young scientists at the assistant professor level are encouraged to apply. Only 20 applicants will be selected for participation. Participants of the workshop are strongly encouraged to bring their own problem data sets or crystals so the problems can be addressed during data collection and/or computation workshops. *Application*: Application deadline is April 11. The application form, the program, contact info and other details can be found at http: http://www.ccp4.ac.uk/schools/APS-2014/index.php<https://mail.anl.gov/owa/redir.aspx?C=Qww5V7BVpECZd8A2kldFSf7_-DvC9NAIxdFZE…> *Fees: *There is no fee for the workshop. The students will be responsible for their transportation and lodging. The workshop organizers can help make the reservations at economical lodging at the Argonne Guest House. The workshop will also cover the expenses for all meals and refreshments. We hope to see you at the school, Garib, Ronan and Nukri -- Ruslan Sanishvili (Nukri) Macromolecular Crystallographer GM/CA@APS X-ray Science Division, ANL 9700 S. Cass Ave. Argonne, IL 60439 Tel: (630)252-0665 Fax: (630)252-0667rsanishvili(a)anl.gov

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Re: [phenixbb] autosol error// phaser error
by Terwilliger, Thomas C 03 Feb '14

03 Feb '14

Hi Almudena, Can you possibly say what version of Phenix you are using: phenix.version and then the columns in your mtz file: phenix.mtz.dump my_mtz_that_fails.mtz and the inputs you used for autosol and phaser (you can send the top part of the log files that should have this information). Can you also try this little test for resolve model building (that is where the "cannot read segment library" comes from): phenix_regression.wizards.test_command_line_build test_autobuild_quick That would help for diagnosing the problems. All the best, Tom T Hi everyone, I am facing some troubles with PHASER and with AutoSol (things that did not happen earlier to me). I am working with anomalous data and the first thing I do is to run HySS in order to find the heavy atoms sites. Once this is done I have two options: run PHASER or run AutoSol. Phaser gives the following error message: ERROR setting up data inputs (FATAL RUNTIME) Can not find MTZ column "F_SAD_SAD(+)" Instead Autosol gives the following: ERROR sorry can not read segment library Could anyone help me out here? 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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Ten days left, many seats available: Apply for RapiData 2014, a course on Data Collection and Structure Solving at the NSLS.
by Robert Sweet 31 Jan '14

31 Jan '14

We are offering RapiData 2014, the sixteenth offering of our popular course: Rapid Data Collection and Structure Solving at the NSLS: A Practical Course in Macromolecular X-Ray Diffraction Measurement The course will be held 27 April - 2 May 2014: http://www.bnl.gov/RapiData/. Students could be at any level from advanced undergraduate to full professor. The course should accommodate 48 students total. We encourage all students to bring their own specimens for data collection, and to bring old data for the data-reduction and structure-solving tutorials. Please read the Course Announcement at http://www.bnl.gov/RapiData/. You'll see that many experts in the field will be available for lectures and tutorials. In addition to MX there will be opportunity for learning about correlated MX and spectroscopy, and SAXS. You'll find the application materials on the Course Application tab at this site. For the twelfth time we will hold a short lecture course on the fundamentals of crystallography for roughly five hours on Sunday 27 April. The body of the RapiData course really requires that students have a healthy knowledge of crystallography. For potential students who have some experience but are shaky about fundamentals, this course will help. There will be an additional fee for the fundamentals course, to pay for Saturday night accomodations and food on Sunday morning and noon. Latin American Scientists: Several scholarships are available, from the International Union of Crystallography, to pay partial travel and subsistence costs for Latin-American students and junior faculty (no more than 30 yrs). Please apply for the course, and then contact R. Sweet (sweet(a)bnl.gov) if you are interested in applying for a scholarship. In accordance with the standards of the International Union of Crystallography, we observe the basic policy of non-discrimination, affirming the right and freedom of scientists to associate in international scientific activity without regard to such factors as citizenship, religion, creed, political stance, ethnic origin, race, colour, language, age, or gender, in accordance with the Statutes of the International Council for Science. At this course no barriers will exist beyond the application procedure that would prevent the participation of bona fide scientists. Please apply yourself, or send your students to our course, Bob Sweet, Sonya Kiss, and Alex Soares Course Announcement at http://www.bnl.gov/RapiData/ ========================================================================= Robert M. Sweet E-Dress: sweet(a)bnl.gov Group Leader, PXRR: Macromolecular ^ (that's L Crystallography Research Resource at NSLS not 1) http://px.nsls.bnl.gov/ Photon Sciences and Biosciences Dept Office and mail, Bldg 745, a.k.a. LOB-5 Brookhaven Nat'l Lab. Phones: Upton, NY 11973 631 344 3401 (Office) U.S.A. 631 344 2741 (Facsimile) =========================================================================

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