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Rfree flag transfer
by Zhang yu 06 Dec '11

06 Dec '11

Hi, I am using phenix_1.7.1-743 GUI. I would like to transfer Rfree tag from one dataset to the other one, but had the following error, "The uni cell for the Miller array /***/*** (186.326, 103.98, 297.48, 90, 98.465, 90)" is significantly different than the output unit cell (183.486, 103.5, 295.416, 90, 98.828, 90)" Two datasets are from same kind of crystal, but with slight different cells. I guess that is why "Reflection file editor" refused to do it. Could anyone tell me how to avoid the error? Thanks Yu

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autoMR wizard
by Vitali Stanevich 06 Dec '11

06 Dec '11

Hi, I'm trying to solve structure by molecular replacement. We already have structure for this protein and new is exactly the same thing with a ligand soaked. I can solve it without a problem with ccp4 gui (tfz=47.7), but not with phenix.automr, which is disappointing. Can somebody point me out what's wrong with my data input? I did it with this command: phenix.automr output.sca complex_search.pdb identity=90 mass=93500 copies=1 or with .eff file (attached) Thanks, Vitali

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H related bond deviaion
by Dialing Pretty 06 Dec '11

06 Dec '11

Dear All, I did a Phenix refine, and before the refine all the H were added. MolProbity analysis demonstrated that almost everything are acceptable after the refinement. However when I did the geometry analysis by the COOT validation, I find all the residues having a significant deviation bond involving H. with z score higher than 7. I am looking forward to getting an explanation from you on it,including how to avoid it. Cheers, Dialing

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bond deviation deected by Coot
by Dialing Pretty 05 Dec '11

05 Dec '11

Dear All, After Pheneix refine, the quality of the structure improved significantly as analyzed by Molprobity. However the bond deviation increased significantly after the refinement. Will you please tell me which refine function can be used to reduce the bond deviation detected by the Coot geometry analysis? Cheers, Dialing

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rotamer outlier reduction by coot
by Dialing Pretty 05 Dec '11

05 Dec '11

Dear All, I am leaning rotamer outlier reduction by Coot. After select a rotamer and acception, I find some hydrogens in the outlier rotamer will be isolated from the rotamer, and the rotamer will have new hydrogens at its new position. Is any influence by further refine by phenix? After new rotamer acception, I have did the rotamer auto-fit, I find there is a trend on that several oxygens can pack together. How to process this problem? After I save the new PDB file by coot after I selected the new rotamers to replace the outlier rotamers, I did a Phenix refine. There is an error message at the start says "Number of atoms with unknown nonbonded energy typensymbol: 2228". What does it mean and how to solve the problem? Is any simple method by which I can do the rotamer outlier reduction by Coot? I am looking forward to getting your reply. Dialing

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documents explaining parameter settings in phenix-1.7.2
by Ruan Wenjie 05 Dec '11

05 Dec '11

Hi, I want to know, about the new Phenix-1.7.2 version, whether I can find some detailed documents explaining how to set the parameters..since there are so many options and I'm not clear their meaning..Thanks~ best, wenjie

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Job Opportunity - Head of the Berkeley Center for Structural Biology
by Paul Adams 04 Dec '11

04 Dec '11

The Physical Biosciences Division at Lawrence Berkeley National Laboratory is seeking candidates for the Head of the Berkeley Center for Structural Biology. This position provides scientific, technical and operational oversight of the BCSB at the Advanced Light Source (ALS), a third generation synchrotron facility. The BCSB is a user resource for structural biology experiments and consists of 5 beamlines at 2 sectors of the ALS, with a staff of 16. This Staff Scientist position will provide leadership and direction to develop methodology and instrumentation for collecting and analyzing crystallographic data using synchrotron radiation, and on projects involving the structure determination of biological molecules using X-ray crystallography. This position focuses on the field of crystallography, and involves interactions and collaborations with researchers from multiple scientific disciplines including chemistry, crystallography, biochemistry, biology, physics and computational sciences. For full details please visit the job application link at: https://lbl.taleo.net/careersection/2/jobdetail.ftl?lang=en&job=73970 Lawrence Berkeley National Laboratory is a world leader in science and engineering research, with 13 Nobel Prize recipients over the past 75 years. 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 about the Lab at http://www.lbl.gov. -- Paul Adams Deputy Division Director, Physical Biosciences Division, 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 64, Room 248 Tel: 1-510-486-4225, Fax: 1-510-486-5909 http://cci.lbl.gov/paul Lawrence Berkeley Laboratory 1 Cyclotron Road BLDG 64R0121 Berkeley, CA 94720, USA. Executive Assistant: Louise Benvenue [ LBenvenue(a)lbl.gov ][ 1-510-495-2506 ] --

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pdb hierarchy
by Bradley Hintze 04 Dec '11

04 Dec '11

Hi Phenix, I have a hierarchy question. I was using the hierarchy and got something that I did not expect. when running this: pdb_io = pdb.input(pdbfile) hierarchy = pdb_io.construct_hierarchy() for model in hierarchy.models(): print model.id for chain in model.chains(): print ' ' + chain.id When I do this I expect the chains in pdbfile to be printed once for each model in pdbfile. However, when I ran this I got, for example, chain 'A' printed four times under the same model. Why is this? Thanks, Bradley

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Writing PDB
by Bradley Hintze 04 Dec '11

04 Dec '11

Hi again, I am trying to take a pdb and write out a new pdb with just a specified chain. I am trying to do this with the hierarchy but am unfamiliar with its functions How do I do this? Thanks, Bradley

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the Ming dial
by Dialing Pretty 04 Dec '11

04 Dec '11

Dear All, In the Ming dial, there is a occupancy (%), which indication of excellent , good, etc. Does it mean if I choose the "occupancy" of excellent, the rotamer outlier ratio will be lowered? My crystal has a resolution of 2.8, and I find no matter how I turn the dial, the original fits the map best. Currently my rotamer outlier is 8%, thus I need the way to have it solved. In addition, for Coot and Ming, which is much convenient to reduce rotamer outlier? I am looking forward to getting your reply. Cheers, Fenghui

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