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restraints for D3O+ give problems to run in phenix.refine
by Maxime Cuypers 22 Jul '11

22 Jul '11

hello, apologies if this problem has already been reported, i browsed for a while and i am running out of ideas to solve my problem. i have a neutron structure i was refining fine with phenix.refine untill i had to add a D3O water. description: running phenix.elbow or phenix.refine with .cif file for D3O i am getting the following error: ... Residues with excluded nonbonded symmetry interactions: 1 residue: pdb=" O D3O W 1 " occ=0.53 ... (2 atoms not shown) pdb=" D3 D3O W 1 " occ=0.53 Number of atoms with unknown nonbonded energy type symbols: 3 "HETATM 2 D1 D3O W 1 .*. D " "HETATM 3 D2 D3O W 1 .*. D " "HETATM 4 D3 D3O W 1 .*. D " Time building chain proxies: 0.01, per 1000 atoms: 2.50 Sorry: Fatal problems interpreting PDB file: Number of atoms with unknown nonbonded energy type symbols: 3 Please edit the PDB file to resolve the problems and/or supply a CIF file with matching restraint definitions, along with apply_cif_modification and apply_cif_link parameter definitions if necessary. Also note that phenix.ready_set and phenix.elbow are available for creating restraint definitions (CIF files). ******************* i then modified the .param file implementing the apply_cif_modification and apply_cif_link parameters: refinement { main { number_of_macro_cycles = 10 ordered_solvent= false scattering_table= neutron } hydrogens { refine= individual } pdb_interpretation.apply_cif_modification { data_mod = D3O residue_selection = resname D3O } pdb_interpretation.apply_cif_link { data_link = D3O residue_selection_1 = chain W and resname D3O } } ... ************************** the .cif file i have was created with phenix.ready_set: ( i added first line after it failed without) data_mod_D3O # data_comp_list loop_ _chem_comp.id _chem_comp.three_letter_code _chem_comp.name _chem_comp.group _chem_comp.number_atoms_all _chem_comp.number_atoms_nh _chem_comp.desc_level D3O D3O Unknown ligand 4 1 . # data_comp_D3O # loop_ _chem_comp_atom.comp_id _chem_comp_atom.atom_id _chem_comp_atom.type_symbol _chem_comp_atom.type_energy _chem_comp_atom.partial_charge _chem_comp_atom.x _chem_comp_atom.y _chem_comp_atom.z D3O O O O -0.475 -12.5180 -14.4044 -43.0985 D3O H1 D D -0.294 -11.4013 -13.8002 -42.6392 D3O H2 D D -0.294 -13.3333 -13.3284 -43.0933 D3O H3 D D 0.063 -12.3324 -14.5311 -44.0190 # loop_ _chem_comp_bond.comp_id _chem_comp_bond.atom_id_1 _chem_comp_bond.atom_id_2 _chem_comp_bond.type _chem_comp_bond.value_dist _chem_comp_bond.value_dist_esd D3O O H1 single 1.350 0.040 D3O O H2 single 1.350 0.040 D3O O H3 single 0.947 0.010 # loop_ _chem_comp_angle.comp_id _chem_comp_angle.atom_id_1 _chem_comp_angle.atom_id_2 _chem_comp_angle.atom_id_3 _chem_comp_angle.value_angle _chem_comp_angle.value_angle_esd D3O H2 O H1 98.14 3.000 D3O H3 O H1 103.20 1.194 D3O H3 O H2 103.22 1.252 ********************************** whatever i do i systematically get the same error: Monomer Library directory: "/usr/local/phenix-1.7.1-743/chem_data/mon_lib" Total number of atoms: 1165 Number of models: 1 apply_cif_modification: data_mod: D3O Sorry: Missing CIF modification: data_mod_D3O Please check for spelling errors or specify the file name with the modification as an additional argument. ******************************** the command i enter is: phenix.refine xxxx.pdb xxxx.mtz D3O.ligands.cif high_res_xxxx-neutron-long-D3O.params \ refinement.input.xray_data.labels='IMEAN,SIGIMEAN' i looked in the online phenix.refine manual but it is not mentionning what to do in such error case. where should i put "data_mod_D3O" in the parameter file? is it the real source of the error? Could someone help me figuring out a solution to get the restraints to work for D3O(+), please? Maxime

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Protein expression, purification and crystallization
by Hena Dutta 21 Jul '11

21 Jul '11

Dear Members of CCP4BB and PHENIXBB, Can you suggest a reliable website where I can get basic and advanced information on protein expression, purification and crystallization. I like to read on the monitor. Thanking you in advance... Hena

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phenix.phaser PATH problem
by G P 21 Jul '11

21 Jul '11

Dear all, It's long story: At beginning, I have phenix installed. I do not have CCP4 installed. Then I run "phenix.phaser params.eff" to call phenix run phaser from script params.eff. It works well. Then, I installed CCP4 with its own phaser inside. Then I run again "phenix.phaser params.eff". The computer start to import files (should be some libraries and supporting files, not input data) from CCP4 installation directory. It seems so strange for me. And because some of the .so files in CCP4 directory are for 32bit, phenix.phaser gave me error message: wrong ELF class: ELFCLASS32 and refused to keep running. I guess I could solve this problem by copying the same .so file in phenix directory into CCP4's directory. What I really want to know is why this happen. Is that the installation of CCP4 changed some kinds of PATH variables for phenix? How could I fix by giving a right path again? I would appreciate to any help. Thanks a lot guys! Best regards, GP

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phenix.phaser multiple models
by G Y 21 Jul '11

21 Jul '11

Dear all, I want to give several input pdb (searching model) at same time and let phaser run MR separately on each of them. I found I can do this by first "Add ensembles" at Ensemble tab and then "Add search" at Search procedure tab then link the correct ensemble ID. However, there is just one output result for the best solution. Is there anyway to get all solutions in separate .mtz and .pdb files for different searching models? Many thanks! regards, G

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problem in rosetta rebuilding
by intekhab alam 20 Jul '11

20 Jul '11

Hi i tried to run rosetta on a unix machine (ubuntu 9.04) for my data. Upto MR step everything goes fine , but during the rebuilding step after 20 cycles the computer shuts down. i have attached the log file for the autobuilding run of rosetta. i am using phenix 1.7.1-743 version. i will be grateful if some one helps me out -- INTEKHAB ALAM LABORATORY OF STRUCTURAL BIOINFORMATICS KOREA UNIVERSITY, SEOUL

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Phenix TLS refined model feeding into next round of refinement
by Daqi Tu 20 Jul '11

20 Jul '11

Hi, I used to think after one round of Phenix TLS refinement, if I need to do further refinements after correcting couple residues, I need to take out the ANISOU records from the pdb file. The reason is if not, all protein atoms might be applied anisotropic individual B factor refinement in the next round. Yesterday, I made a "mistake" directly feeding the pdb file from the previous TLS refinement into the next one. Seems it is fine. Is that true Phenix automatically recognize what I wanted, that is, TLS only, not anisotropic individual B factor refinement? Thank you. Daqi Tu

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How the sharpening were performed in PHENIX.
by zhangh1＠umbc.edu 19 Jul '11

19 Jul '11

Hi, I was trying to do a B-factor sharpening using phenix GUI CreatMaps utilities. The output for the sharpened maps contains 2FOFCWT and PHI2FOFCWT columes, so I think they are sigmaA weighted 2Fo-Fc maps. But from Brunger's paper, the sharpening coefficients seems directly applied on Fo, and I wonder what happened before we get the 2mFoDFc maps. Or, the sharpening coefficients have been applied to the 2mFoDFc maps? Thanks for any information! Hailiang

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Experimental Data Question
by Yuri 16 Jul '11

16 Jul '11

Nat, That helps clarifying things. Thank you -- Yuri Pompeu

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Experimental Data Question
by Yuri 16 Jul '11

16 Jul '11

It looks like phase_and_build only takes reflections input as F SIGF. I had to use a reflection converter as I had a .sca file with I SIGI data. -- Yuri Pompeu

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Re: [phenixbb] Experimental Data Question
by Yuri 15 Jul '11

15 Jul '11

I am not positive, because I had to convert my reflections.sca (I SIGI) into reflections.mtz (F SIGF) -- Yuri Pompeu

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Experimental Data Question
by Yuri 15 Jul '11

15 Jul '11

Hello All, Heres my situation: I collected data on a new crystal, indexed, scaled (2.75 A), ran molecular replacement (40% homologue) and found a solution. I did some building got a new model, did an initial refinement (using my .sca file, not data.mtz from mol rep). I then ran phase_and_build with density modification. The new maps look a lot better and I am able to see some residues I was not able to place before. I did some more building and I am ready to refine. What should I use as experimental data? phase and_build gave me a .mtz file with amplitudes (no I) and "experimental phase" coeeficients (HLAM. HLBM,...) Cheers -- Yuri Pompeu

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Re: [phenixbb] ADP refinement selection
by Pavel Afonine 15 Jul '11

15 Jul '11

Hi Christian, the problem is that you did not ask phenix.refine to refine the rest of the atoms isotropically (with your command below you only refine anisotropic ADPs of atoms in chain Q, and the B-factors of all the other atoms are not refined): > adp { > individual { > anisotropic = "chain Q" > } I would do it like this: adp { individual { anisotropic = chain Q and element CL isotropic = not (chain Q and element CL) } } Pavel.

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off-topic-Question
by Haytham Wahba 14 Jul '11

14 Jul '11

Dear all i have protein soaked in Dimethyltindibromide in the active site 2 cysteine and 1 aspartic acid by help of anomalous map i can see 2 Sn atoms in each subunit in AU there is difference in both subunits, Sub-A shows acetate near Sn and Sub-B show phosphate ion, even the position of one of the 2 cystein is different from unit to other 1-is it normal to see such difference between 2 subunit? also the distances between Sn and surrounding atoms does not suggest covalent binding 2-the important question is how to confirm if the 2 methyl groups or even one methyl group of dimethlytin are still there or cleaved i mean one can not differentiate between density of water and methygroup. How to define coordinate number of Heavy atom and identity of the attached atoms as you will see in the link below (with water) and (with Methyl) the map are the same and as well r-factors 3-what can i do to confirm presence or cleavage of methyl: collect more data or using other technique like exafs, Mossbauer spectroscopy could help (with water) http://dl.dropbox.com/u/12001878/Subunit-A.png http://dl.dropbox.com/u/12001878/subunit-A-anomalous.png http://dl.dropbox.com/u/12001878/Subunit-B.png http://dl.dropbox.com/u/12001878/subunit-B-anomalous.png (with methyl) http://dl.dropbox.com/u/12001878/DimethylTin-subunit-A-alt-conf.png http://dl.dropbox.com/u/12001878/DimethylTin-subunit-B.png N.B: resolution 1.7 A r factors and molprop are perfect. thank you for your time haytham biochimi canada

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Parsing error
by Yuri 14 Jul '11

14 Jul '11

Nat, Thank you. I am still using dev-814. You probably have fixed it already. ill update when I am done running these jobs. -- Yuri Pompeu

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Parsing error
by Yuri 14 Jul '11

14 Jul '11

Hello everyone, I cannot figure out why I keep getting this error. I dont see anything wrong with my PDB. I realize I realize I have breaks in my chain, as there are regions of unclear density as of now I am building in what I can see... Heres what the log says: ======== ================= Separating polymer chains into rigid bodies ================= (chain 'A' and segid ' ' and resseq 393:6) (chain 'B' and segid 'B ' and resseq 401:401) ================== Extract refinement strategy and selections ================= The error is initial RESSEQ index > final RESSEQ index. I do not understand why it is picking them this way It then halts at an error... Any Ideas?

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restraints_edite.params
by Haytham Wahba 13 Jul '11

13 Jul '11

Dear All How to get rid of restraints_edite.params in the following run of phenix.refine, i mean after using it in previous run.and what is .def files. and bond.slack Haytham Udem Biochemi Canada

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R-merge and MOLREP
by Yuri 13 Jul '11

13 Jul '11

Ed and Nathaniel, Thank you for the input. I agree with Ed. The I/sigma values for this data set are well within accepted ranges... I believe the R-merge values are due to some inherent crystal property. They grew in very strange manner. -- Yuri Pompeu

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R-merge and MOLREP
by Yuri 13 Jul '11

13 Jul '11

Hello everyone, I just collected some data on a new protein. It indexes in P3 and looks like I can scale it all the way to P 63 2 2 . My questions are: 1-I see a reasonable chi-square value 1.69 but r-merge 0.15 (0.49 at 2.75 A). It was 0.20 before I excluded some bad frames. I thought this R value is a bit high... Is it? Mosaicty was around 1.00. 2- My search model has an identity of around 40%. I tried MOLREP. Seems I got a solution LLG=486 PAK=10 TFZ ~30 RFZ ~20. My R-free before any refinement is 0.54. Two questions here, a) I think I only fully understand the meaning of LLG, what about PAK and both Z-values? b)is this R-free acceptable or is it also a little high? Thank you for any input

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Summer X-rays at the NSLS
by Robert Sweet 11 Jul '11

11 Jul '11

Summer X-rays at the NSLS The PXRR operates five beamlines at the NSLS: http://www.px.nsls.bnl.gov/. Two of these are the undulator beamlines X25 and X29. The dipole beamlines X12-B and X12-C are available, and are very effective for conventional crystallography. There are efficient ALS-Style Automounters available -- 8400 crystals mounted in the last 12 months. Also, at beamline X26-C, we have a unique-in-the-US station for combined x-ray diffraction and single-crystal optical spectroscopies: http://www.px.nsls.bnl.gov/x26c/x26c_info.html Notice also our world-leading Mail-In crystallography program: http://www.px.nsls.bnl.gov/Mailin.html You may request access to any of these here: http://www.px.nsls.bnl.gov/beamtime_requests.html, and can look at the schedules for all five here: http://www.px.nsls.bnl.gov/ Stay tuned for the announcement in December of RapiData, our annual course in rapid data collection and structure solving: http://www.bnl.gov/rapidata/ Bob Sweet ========================================================================= 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/ Biology Dept Brookhaven Nat'l Lab. Phones: Upton, NY 11973 631 344 3401 (Office) U.S.A. 631 344 2741 (Facsimile) =========================================================================

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significant figures in reporting Rfree
by Jennifer Weinreich 11 Jul '11

11 Jul '11

Hi. I am wondering what is the common practice with respect to how many significant figures should be used for reporting Rfree at different resolution? Should we always use all 4 figures that are reported by the program? Thank you, Jenn

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How to rebuild a molecular only‏
by dingding830106＠sina.com 08 Jul '11

08 Jul '11

Dear All, There are 8 moleculars in an asymmetry unit, but only one molecular should be rebulit, what can I do ? Thanks a lot! Wei Feng

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Re: [phenixbb] Elbow and smiles to make CO coordinates
by Yarrow Madrona 08 Jul '11

08 Jul '11

Thanks! Didn't realize it was so easy. > For getting carbon monoxide coordinates: In coot, go to File > Get > Monomer... > Type in "CMO" and click OK. > > A carbon monoxide molecule will po up in the middle of the window > (provided everything is set up correctly). > > If you are trying to fit an electron density, place that density in the > middle of the window before you retrieve the ligand. > > Hope that helps. > > Cheers! > MM > > On Jul 8, 2011, at 1:41 PM, Yarrow Madrona wrote: > >> >> Hi, >> >> I am trying to use Elbow and smiles to generate carbon monoxide >> coordinates. I thought it would be easy enough. I made two waters in >> coot >> and changed the the oxygens to C and O and set the distance around 1.13 >> angstrom. Saved these coordinates as a PDB. I then used this in Elbow >> but >> it gives me a methyl group. Not sure what is going on. Any help would >> be >> appreciated. Thank you! >> >> -Yarrow >> >> -- >> Yarrow Madrona >> >> Graduate Student >> Molecular Biology and Biochemistry Dept. >> University of California, Irvine >> Natural Sciences I, Rm 2403 >> Irvine, CA 92697 >> >> >> >> _______________________________________________ >> phenixbb mailing list >> phenixbb(a)phenix-online.org >> http://phenix-online.org/mailman/listinfo/phenixbb > > > _______________________________________________ > phenixbb mailing list > phenixbb(a)phenix-online.org > http://phenix-online.org/mailman/listinfo/phenixbb > > -- Yarrow Madrona Graduate Student Molecular Biology and Biochemistry Dept. University of California, Irvine Natural Sciences I, Rm 2403 Irvine, CA 92697

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Elbow and smiles to make CO coordinates
by Yarrow Madrona 08 Jul '11

08 Jul '11

Hi, I am trying to use Elbow and smiles to generate carbon monoxide coordinates. I thought it would be easy enough. I made two waters in coot and changed the the oxygens to C and O and set the distance around 1.13 angstrom. Saved these coordinates as a PDB. I then used this in Elbow but it gives me a methyl group. Not sure what is going on. Any help would be appreciated. Thank you! -Yarrow -- Yarrow Madrona Graduate Student Molecular Biology and Biochemistry Dept. University of California, Irvine Natural Sciences I, Rm 2403 Irvine, CA 92697

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AutoSol question
by Laurie Betts 08 Jul '11

08 Jul '11

If I want to run Autosol with a set of previously determined heavy atom positions (seleno-Met protein) that I might have edited, and NOT search for any more sites, just use those sites for phasing and density modification and model building, I can't seem to find in any of the parameter buttons a way to do this - every time I try it seems to just re-run hyss and find the same sites again. It seems to find multiple Se sites on top of each other that are closer than the minimum distance I specified in the input. Thanks LAurie Betts

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NCS Question
by Yuri 07 Jul '11

07 Jul '11

Dear PHENIX community, Could someone please point me toward a good paper on NCS? Cheers, -- Yuri Pompeu

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