- phenixbb - phenix-online.org

wxu scale in phenix.refine
by Jan Abendroth 18 Sep '07

18 Sep '07

Hi all, in the final stages of refining a structure, I would like to optimize the restraint weights for geometry and B factors. It seems to work fine for geometry by defining " refinement.target_weights.wxc_scale=1.0". However, when the respective definition for B-factors does not seem to have an impact at all. I tried both: "refinement.target_weights.wxu_scale=2.0" in the parameter file or "wxu_scale=2.0" in the command line. The main reason why I try to fiddle around with the B-weights is that coot gives me a whole bunch of red bars in the Temperature factor variance analysis... I am using phenix 1.3d (downloaded past Sunday), mac-intel-osx, osx-10.4.10 Any ideas? Cheers Jan

3 5

Re: [phenixbb] Problem in Autosol
by Eric Tee 16 Sep '07

16 Sep '07

Hi Tom, Many thanks for your reply. I was running phenix in my d_drive (a vfat partition) and got the error message. However, when I moved the mtz file to a directory under home directory (home/user/phenix-local), The program work without any problem. Let me explain how this work: I'm running phenix on fedora7 (a dual boot machine with Windows). I installed phenix under home/user/program/phenix (not /usr/local). I have a vfat partition (as d_drive) where I keep all my data and basically process everything there. I got the error message if I run phenix in the vfat partition but the program can be run successfully under the home directory /home/user/phenix-local). Following is what I got if I run phenix in the vfat partition (d_drive): WORKDIR: /mnt/d_drive/ccp4_data/SAD/phenix-localmachine Checking for KnownWizards: ['AutoSol', 'AutoBuild', 'ImportRawData'] application method: Null Getting inputs on first pass... SETTING UP INPUTS AutoSol Wizard Screen 1 of 4 AutoSol: Choose data files for dataset #1 A "dataset" is a group of data with a single set of heavy-atom sites You will be able to combine the results of all datasets later Note: Data files can be any format. If they are not all Scalepack premerged or all Scalepack unmerged then all will be converted to Scalepack premerged SUMMARY Input files dataset #1 Se_pk.mtz Creating new Data Storage /mnt/d_drive/ccp4_data/SAD/phenix-localmachine/PDS/AutoSol.1 sh: TEMP0/temporary.com: Permission denied Could be something related to permission problem but I have set permission to read/write/execute in vfat partition by adding the following line to /etc/fstab: /dev/sda6 /mnt/d_drive vfat users,uid=eric,gid=users,umask=0002,utf8=true 0 0 Any suggestion to enable running phenix in the vfat partition? Eric On 9/16/07, Tom Terwilliger <terwilliger(a)lanl.gov> wrote: > > Hi Eric, > > Can you possibly check to see that you have a recent version of phenix: > > phenix.version will do this. > > > Then if that is ok, I'm not sure what is causing the problem. This > message means that solve could not run with the data it got, but > usually an error message should come up earlier if there is a > problem. Have a look at LAST.LOG in your AutoSol directory and see > if it has any hints. Also look at AutoSol_run_1_.output and see the > end of this log file. > > If none of those work, if you can send me your input data file I can > see if there is a problem with it (all I would need is the first 100 > lines or so). > -Tom T > >

1 0

Problem in Autosol
by Eric Tee 15 Sep '07

15 Sep '07

Hi All, I was trying to run SAD phasing with phenix GUI for the first time. After conversion of mtz to sca file, at the step of autosol_scale_and_analyze_mad, I got the following message: failed to carry out Autosol_scale_and_analyze_mad None of the solve versions worked I'm pretty sure I choose the right package. Should I do something to configure solve? Eric

1 0

elbow.builder to generate charges on individual atoms?
by Francis E Reyes 13 Sep '07

13 Sep '07

Ok, this is probably an unsupported feature(TM),but is there anyway to hack elbow.builder to output an electronic charge (presumably from the AM1 calculation) for each atom of a ligand? (by say substituting in for the Bfactor)) Thanks FR --------------------------------------------- Francis Reyes M.Sc. 215 UCB University of Colorado at Boulder gpg --keyserver pgp.mit.edu --recv-keys 67BA8D5D 8AE2 F2F4 90F7 9640 28BC 686F 78FD 6669 67BA 8D5D

2 1

Position for PSI Knowledgebase development
by Paul Adams 12 Sep '07

12 Sep '07

======================================================================= Lawrence Berkeley National Laboratory Software Developer II ======================================================================= Software Developer II Job ID: 20930 Division: Physical Biosciences Date Opened: 8/7/2007 Summary This position will be part of the Computational Crystallography Initiative at Lawrence Berkeley Lab and will be responsible for developing a web site to disseminate information about the Technologies developed by the NIH Protein Structure Initiative (PSI). This program funds the majority of structural genomics efforts within the US and is responsible for the development of many new technologies that are useful to macromolecular crystallographers. This technology resource is part of the larger PSI Knowledge Base that will provide an information portal for the scientific community. Duties Essential: Under general direction of the Principal Investigator: Develop and maintain web site documenting PSI developed technologies. Interact with PSI researchers to collect information about new technologies. Create a relational database to store crystallographic data. Install and maintain SVN repositories for the PSI community. Marginal: Perform routine analysis of crystallographic data. Maintain web site computing hardware and software. Other duties as assigned. Qualifications Essential: Experience with writing and maintaining HTML web pages. Knowledge of standard programming methods, and Python in a UNIX environment. Strong analytical and organizational skills. Ability to handle multiple tasks in parallel. Excellent interpersonal skills for working in a diverse team environment, ability to interact effectively with other scientists, and to address their needs in an effective and timely manner. Marginal: B.S. Degree or higher in biophysics, computer science, chemistry, electrical engineering, physics or related field preferred or equivalent experience, with demonstrated programming experience. Experience maintaining computing hardware and software. Experience with analysis of crystallographic data. NOTE: This is a one year Term appointment with the possibility of renewal under the same terms and conditions, contingent upon continued funding and availability of work. Lawrence Berkeley National Laboratory is a world leader in science and engineering research, with 11 Nobel Prize recipients over the past 75 years, and 59 present members of the National Academy of Sciences. LBNL conducts unclassified research across a wide range of scientific disciplines and hosts four national user facilities. AA/ EEO employer committed to the development of a safe and diverse workforce. Learn more at http://www.lbl.gov. For more information about the CCI visit: http://cci.lbl.gov/ To apply: visit http://cjo.lbl.gov/ and search for the job number 20930. Please see http://cjo.lbl.gov/app_instr.html for details of how to apply. -- Paul Adams Senior Scientist, Physical Biosciences Division, Lawrence Berkeley Lab Adjunct Professor, Department of Bioengineering, U.C. Berkeley Head, Berkeley Center for Structural Biology Deputy Principal Investigator, Berkeley Structural Genomics Center Building 64, Room 248 Tel: 510-486-4225, Fax: 510-486-5909 http://cci.lbl.gov/paul Lawrence Berkeley Laboratory 1 Cyclotron Road BLDG 64R0121 Berkeley, CA 94720, USA. --

1 0

pseudo-merohedral twinning in P212121
by Schneider Sabine 12 Sep '07

12 Sep '07

Hi everyone, I have a data set to 2.8A, with most likely 2 molecules in the asu and a molecular replacement model with 40% sequence identity. (Cell 71.3 71.3 227.9 90 90 90) Initially the data appeared to be either P4322 or P43212 (Rsym = 7.4%; Cell 71.3 71.3 227.9 90 90 90), but the molecular replacement solutions had major clashes with the symmetry related molecules and a lower LLG for the solution of the second molecule. No twinning was detected by Xtriage. Processing the data in P212121 (Rsym 5.6%, cell 71.3 71.4 228.2 90 90 90) gave me a better molecular replacement solution (LLG 121/373), but I had 5 clashes with the second molecule in the asu. (I tested all alternative spacegroups) I also have a MAD dataset (very low quality!) and I combined the phases with the one obtained from molecular replacement in Sharp. After NCS averaging the maps had improved (still not great). I tried to improve things in the model and run Phaser again and the solution had better statistics (LLG 338/1223) and the clashes were reduced to 2. Xtriage detected pseudo-merohedral twinning with a twin fraction of 43% with twin operator -k, -h, -l. So I tried refining the model with phenix telling it the twinning operator and fraction, but R/Rfree are stuck around 45%. I also tried simulated annealing but that gave even higher R/Rfree. Is there anything I can do, or is it a hopeless case? Thanks for your help in advance! Sabine This message has been checked for viruses but the contents of an attachment may still contain software viruses, which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation.

2 1

phenix.refine error
by Jianghai Zhu 12 Sep '07

12 Sep '07

Hi, I was trying the twinning refinement by phenix.refine and I got the following error messages during TLS refinement. Traceback (most recent call last): File "/nfs/home/jzhu/cci_apps_sources/phenix/phenix/command_line/ refine.py", line 5, in <module> command_line.run(command_name="phenix.refine", args=sys.argv[1:]) File "/nfs/home/jzhu/cci_apps_sources/phenix/phenix/refinement/ command_line.py", line 81, in run call_back_after_monitor_collect=call_back_after_monitor_collect) File "/nfs/home/jzhu/cci_apps_sources/phenix/phenix/refinement/ driver.py", line 1244, in run log = log) File "/nfs/home/jzhu/cci_apps_sources/phenix/phenix/refinement/ strategies.py", line 866, in refinement_machine h_params = h_params) File "/nfs/home/jzhu/cci_apps_sources/mmtbx/mmtbx/refinement/ adp_refinement.py", line 175, in __init__ macro_cycle = macro_cycle) File "/nfs/home/jzhu/cci_apps_sources/mmtbx/mmtbx/tls/tools.py", line 600, in __init__ fmodel.info().show_targets(text = prefix+" start model", out = out) AttributeError: 'info' object has no attribute 'show_targets' Could somebody help me? Thanks. Jianghai PS. the version is 2007_08_18_1856. +++++++++++++++++++++++++++++++ Jianghai Zhu, Ph.D CBR Institute for Biomedical Research Department of Pathology Harvard Medical School 200 Longwood Ave., Boston, MA 02115 Ph: 617-278-3211 Fx: 618-278-3232 +++++++++++++++++++++++++++++++

2 1

What does mmtbx.twin_map_utils output?
by Francis E Reyes 11 Sep '07

11 Sep '07

Specifically I'm asking about the obs_and_calc.mtz file it produces. Thanks FR --------------------------------------------- Francis Reyes M.Sc. 215 UCB University of Colorado at Boulder gpg --keyserver pgp.mit.edu --recv-keys 67BA8D5D 8AE2 F2F4 90F7 9640 28BC 686F 78FD 6669 67BA 8D5D

2 3

So I think I have a twinning problem... ?
by Francis E Reyes 10 Sep '07

10 Sep '07

Hi all The short of the long is that phenix.xtriage on a C2 data set shows twinning with 3 twinning operators (-h,-k-l -k-h-l and k,h,-l). Pushing it through twin_utils, the soution k,h,-l gives an r/rfree of 0.30 and 0.3014 when the twin fraction is 0.352 . The question is where to go from here? I try to phenix.refine the same model in phenix.xtriage (except the mtz file is from the latest round of refinement of that model) and the R/Rfree on macro cycle =2 is 30 and 34 . Unfortunately, it doesn't seem to finish the refinement, I get a seg fault. In the def file for the refinement I set twinning = True and twin_law = k,h,-l . I tried to subject the same model and the .ref file to an autobuild passing in a .eff file for refinement specifying the twin_law, and again I get a segfault / crash when refining the input model. Please advise! --------------------------------------------- Francis Reyes M.Sc. 215 UCB University of Colorado at Boulder gpg --keyserver pgp.mit.edu --recv-keys 67BA8D5D 8AE2 F2F4 90F7 9640 28BC 686F 78FD 6669 67BA 8D5D

2 1

Twinning in phenix.autobuild?
by Francis E Reyes 10 Sep '07

10 Sep '07

Hello all So I discovered from xtriage that my crystal is twinned. I have a pretty decent model that xtriage says has an r/rfree of 30/30 to a resolution of 2.6. I wanted to try a phenix.autobuild at 2.8A. I couldn't find a parameter flag for autobuild that turns on twinning. I already autobuilt this model once, and the xtriage log did find that the crystal was twinned, but twinning in refinement of the model during rebuilding wasn't turned on. Is there a way to tell autobuild to rebuild using twinning? Thanks FR --------------------------------------------- Francis Reyes M.Sc. 215 UCB University of Colorado at Boulder gpg --keyserver pgp.mit.edu --recv-keys 67BA8D5D 8AE2 F2F4 90F7 9640 28BC 686F 78FD 6669 67BA 8D5D

3 3