August 2012 - phenixbb - phenix-online.org

refining multiple conformations
by Kendall Nettles 08 Aug '12

08 Aug '12

Hi, We have a structure with the ligand showing two overlapping conformers. When we refine it with both conformers separately, it is pretty clear that there are substantial differences in the protein as a result, for about a third of the protein chain. My question is, would it be better to try to define altloc for those specific regions, or would it be OK to refine with two entire alternate protein chains? There is also a second protein chain that shows only a single binding mode for the ligand. It's a 2.0 angstrom structure with 4000 atoms and 27,000 reflections. The yellow map goes with the green model in the attached pic. Also, do we want to let each amino acid have its own occupancy? or should one ligand copy and one chain all have the same occupancy? I'm leaning towards the latter since the differences should be directly tied to the ligand binding mode. Kendall Nettles [cid:[email protected]]

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mr_rosetta problems
by Ian Slaymaker 07 Aug '12

07 Aug '12

I am trying to get mr_rosetta working on our cluster and am running into some problems I am not sure how to solve. The phenix_regression.wizards.test_command_line_rosetta_quick_tests tests went smoothly were completed. However, my first test run with all the defaults (not submitted to multiple processors) using my reflection file, HHR analysis file, sequence file, and the 2 fragment files failed with the below errors. I checked all the files, and it seems this is a problem with the fragment files but I am not sure exactly what they are supposed to look like. I thought it could be because our cluster doesnt have access to any outside networks...is this a problem with rosetta not being able to download pdb files? if so, is there a way to supply them internally? The aligned model looks somewhat what I expected it to (same beta sheet arrangement) but it seems to be incomplete. Any help would be very much appreciated! Splitting work into 100 jobs and running with 1 processors using sh background=None in /MR_ROSETTA_1/GROUP_OF_ROSETTA_REBUILD_1/RUN_1/REBUILD_IN_SETS_1 Starting job 1...Log will be: /MR_ROSETTA_1/GROUP_OF_ROSETTA_REBUILD_1/RUN_1/REBUILD_IN_SETS_1/RUN_FILE_1.log ******************* ERROR ENDING *************** mr_rosetta failed... ******************************************************************************** Sorry, a subprocess has failed... END OF LOG FILE /MR_ROSETTA_1/GROUP_OF_ROSETTA_REBUILD_1/RUN_1/REBUILD_IN_SETS_1/RUN_FILE_1.log : to match the actual PDB sequence: (protein sequence) New alignment line 4 for PDB: (protein sequence) Start position of target sequence in sequence file: 0 Aligned model for comparison: /MR_ROSETTA_1/GROUP_OF_ROSETTA_REBUILD_1/RUN_1/REBUILD_IN_SETS_1/RUN_1/WORK_1/aligned_model.pdb Log for rebuilding: /MR_ROSETTA_1/GROUP_OF_ROSETTA_REBUILD_1/RUN_1/REBUILD_IN_SETS_1/RUN_1/WORK_1/rebuild.log **************ERROR ENDING********************** Failed to run REBUILD...see log file in /MR_ROSETTA_1/GROUP_OF_ROSETTA_REBUILD_1/RUN_1/REBUILD_IN_SETS_1/RUN_1/WORK_1/rebuild.log The rebuild log had repeats of several errors that I am not sure how to address: core.conformation.Conformation: [ WARNING ] missing heavyatom: CD2 on residue PHE 3 (repeated several times) core.fragments.ConstantLengthFragSet: line too short: Skipping line ' (repeated several times) core.fragments.ConstantLengthFragSet: finished reading top 0 0mer fragments from file/dataFiles/aat000_03_05.200_v1_3 protocols.loops.loops_main: Frag libraries debug none 1

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Ordered solvent distances
by Abhinav Kumar 03 Aug '12

03 Aug '12

Hi, The default minimum distance that a water gets placed near protein/water atoms using 'ordered_solvent=true' option in phenix.refine is 1.8. Isn't this too close? Also, if two waters can't get placed in the density due to distance criterion, can phenix place one water in dual conformations in that density? -- Thanks, Abhinav JCSG@SSRL, SLAC (650) 926-2992

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Lost my job history, can it be recovered? (GUI)
by Andrew Waight 02 Aug '12

02 Aug '12

Hello All, It just so happened that my lab's server ran out of space (someone else uploading datasets) while my phenix rosetta MR job was running. Now the GUI no longer shows any job history in the job history tab (although on the title page the number of jobs is correctly displayed. I cannot find any information on how or if its possible to recover my job history in the GUI. Any tips? Thanks so much. Drew

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