- phenixbb - phenix-online.org

Phaser question : RMS deviation and FOM
by Peter Grey 06 Nov '09

06 Nov '09

Dear Phenix developers, The expected RMS deviation input to Phaser affects the FOM estimation of phases quality. This in-turn affects the sigmaa weighted maps and most importantly the density modification steps that follow phaser. I would like to ask if, based on the phaser solution and the LLG parameter, one could optimize the RMS estimation or know the real RMS deviation that would result in more true FOM. Thanks, Peter With condolences to the family of Warren DeLano who will be sorely missed

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Analyzing MIR datasets
by Rajagopalan, Senapathy 06 Nov '09

06 Nov '09

Hi All, I am a new user to Phenix and am trying to process MIR datasets from a parameter file typing 'phenix.autosol mir.eff' and keep running into the error message saying: _______________ Possible choices: /Users/sena/data/crystallography/raw1025/Processing/iafinal_d212121.mtz:I,SIGI,merged /Users/sena/data/crystallography/raw1025/Processing/iafinal_d212121.mtz:IPR,SIGIPR,merged Please use scaling.input.xray_data.obs_labels to specify an unambiguous substring of the target label. Unable to get range of aniso B from xtriage output Multiple equally suitable arrays of observed xray data found. ******************************************************************************** Failed to carry out AutoSol_scale_and_analyze_mir: Sorry, there is something wrong with the file /Users/sena/data/crystallography/raw1025/Processing/iafinal_d212121.mtz ... xtriage cannot analyze it? ******************************************************************************** ___________________ The 'mir.eff' file contains: ------------------ # autosol { seq_file = sequence.dat #scaling.input.xray_data.obs_labels='I SIGI' # xray_data_labels = FP, SIGFP # autosol.input.xray_data.labels=FP labels='I SIGI' crystal_info { space_group = p212121 unit_cell = 49.020 73.140 187.350 90.000 90.000 90.00 } native { data = iafinal_d212121.mtz } deriv { data = s10final_d212121.mtz atom_type = I sites = 2 inano = noinano *inano anoonly } deriv { data = s13final_d212121.mtz atom_type = I sites = 1 inano = noinano *inano anoonly } deriv { data = s23final_d212121.mtz atom_type = I sites = 1 inano = noinano *inano anoonly } } ----------------- I guess the error comes because the program is not able to make a choice as to which columns to take from the mtz file. But no matter what 'label' syntax I use or where I use it, it doesn't seem to help. Obviously, I am missing something here. So could someone please help me with this. Also, I tried the same thing using the phenix wizard and it still gives me the same error. Thanks Sena Methodist. Leading Medicine. Recognized by U.S.News & World Report as an "Honor Roll" hospital Ranked No. 8 on FORTUNE magazine's list of the "100 Best Companies to Work For" in 2009 Designated as a Magnet hospital for excellence in nursing Visit us at methodisthealth.com Follow us at twitter.com/MethodistHosp ***CONFIDENTIALITY NOTICE*** This e-mail is the property of The Methodist Hospital and/or its relevant affiliates and may contain restricted and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender and delete all copies of the message. Thank you.

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molecular replacement - restricting rotation around a specified orientation
by Christine Gee 06 Nov '09

06 Nov '09

Dear Phenix developers, We have a protein with two sub domains (N-lobe and C-lobe) we are trying to solve by MR. The C-terminal sub domain solves fine (TFZ 11.1), but the N-terminal lobe is not being placed correctly. I read in the online documentation that you can specify a limited rotation range around the orientation you would expect for the N-lobe based on the C-lobe orientation. My question is, how do specify what orientation to start with? I know I need some Euler numbers, but are they just the same ones that the C-lobe writes out with and I use an N- lobe that is basically the other half of the C-lobe pdb (ie the X,Y,Z co-ordinates are consistent with each other at the beginning of the search)? Or do I need to position the N-lobe with the solution C-lobe and write it out for use in the search model, and then how do I specify the Euler? Also we were going to try and use normal mode perturbation to generate an ensemble and I was wondering if there is more documentation somewhere on how to do that? Regards Christine

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about Turbo Frodo
by Zhongli Cui 06 Nov '09

06 Nov '09

Dear all, I have ever used Turbo Frodo as the modelling software in protein crystallography. It is a very convinient software to learn. But it seems that the lience email of turbo is out of work. Does anyone know if Turbo is still maintained by AFMB and the new email for lience? Thanks Zhongli ---------------- Cui Zhongli Professor, Ph.D Dept. of Microbiology College of Life Sciences Nanjing Agricultural University 1 Weigang, Nanjing, 210095 Jiangsu Province P.R. China. Mail: czl(a)njau.edu.cn Tel: 86-25-84396753 Mob: (0)13951080529

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Running Phenix 1.5.2 with Martin Horvath
by Raghav Kalia 05 Nov '09

05 Nov '09

I recently downloaded and installed phenix 1.5-2. I can launch the GUI by double clicking on the phenix icon. However, I cannot get to run phenix.refine on the command line. How does one set paths so that phenix.refine will be recognized in a terminal window? Raghav Kalia

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Re: [phenixbb] phenixbb Digest, Vol 48, Issue 4
by Leo Sazanov 04 Nov '09

04 Nov '09

Thanks, restore results works fine for what I need now. phenixbb-request(a)phenix-online.org wrote: > Send phenixbb mailing list submissions to > phenixbb(a)phenix-online.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.phenix-online.org/mailman/listinfo/phenixbb > or, via email, send a message with subject or body 'help' to > phenixbb-request(a)phenix-online.org > > You can reach the person managing the list at > phenixbb-owner(a)phenix-online.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of phenixbb digest..." > > > Today's Topics: > > 1. Re: re-run jobs in GUI (Nathaniel Echols) > 2. Elbow ligand building (Joe Krahn) > 3. Re: Elbow ligand building (Nigel W Moriarty) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 4 Nov 2009 08:34:24 -0800 > From: Nathaniel Echols <NEchols(a)lbl.gov> > Subject: Re: [phenixbb] re-run jobs in GUI > To: PHENIX user mailing list <phenixbb(a)phenix-online.org> > Message-ID: <529970F2-E319-4152-B4F1-E46184755554(a)lbl.gov> > Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes > > On Nov 4, 2009, at 8:08 AM, Leo Sazanov wrote: > >> Hi, in a new GUI how can one re-run previous jobs (to make some >> modifications to them)? >> > > Open the main GUI (the command 'phenix', or click the home button on > the toolbar of any other program), click the "job history" toolbar > button, select a job from the list, and click "restore results". This > should restore both the results tab or window, and the configuration. > There is also a "restore last job [for the current project]" button on > the toolbar. Any inconsistencies here are definitely a bug, but it > was working for most programs in 1.5-2. (The main exception is the > reflection file editor, but that will also save/restore results in the > next available nightly build.) > > >> If I just try to open parameter (.eff) file from the main file menu in >> Autobuild, the file does not show up, even though it exists. >> Just adding it to the list of input files works, but the information >> is >> not passed on into GUI? >> > > > It's a little complicated right now. If you want to apply the > contents of a parameter file, this is best done at startup - e.g. drag > and drop the file onto the launch icon, or use it as a command line > argument ('phenix.autobuild params.eff'). For phenix.refine, you can > also save default parameters (Preferences->Refinement, or project > settings, or from the utilities menu) and it will start with them pre- > loaded. Once the program window is drawn, however, it's clumsier - > files *should* be passed down to the command-line module (if not, also > a bug), but they won't immediately be applied to the GUI, because of > the way it tracks parameters internally. > > I can't promise that every pre-existing configuration file will be > processed cleanly by the GUI - it's difficult to anticipate what users > will try to do. If you encounter cases where the parameters are > misinterpreted, let me know. > > -------------------- > Nathaniel Echols > Lawrence Berkeley Lab > 510-486-5136 > NEchols(a)lbl.gov > > > > > > > > ------------------------------ > > Message: 2 > Date: Wed, 04 Nov 2009 12:35:01 -0500 > From: Joe Krahn <krahn(a)niehs.nih.gov> > Subject: [phenixbb] Elbow ligand building > To: PHENIX user mailing list <phenixbb(a)phenix-online.org> > Message-ID: <4AF1BB45.20707(a)niehs.nih.gov> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > I am having some problems building ligand parameters with elbow. > > I have an accurate reference structure, but elbow seems to "regularize" > the coordinates in a way the distorts the structure. Is there a way to > disable this? > > With --opt, QM optimization should hopefully remove distortions, but it > is not doing a very good job for this molecule. So, I decided to > optimize using Gaussian, and a better basis set. > > It seems that the Gaussian interface is still fairly simple, and it > seems that you have to edit the Gaussian.csh template. So, I did that, > but got the "Gaussian does not seem to be installed" message. > Unfortunately, elbow runs the Gaussian script with output to /dev/null, > so there is no way to see any error messages. Maybe that should be done > only when the --quiet flag is given. > > I edited the Python source to let errors go to the tty, and found that > the problem is in the way the script is invoked using "csh -c %s.csh". > That only works if "." is in your $PATH, which is often the case. It > also invokes an extra instance of csh, because it is invoked as a system > command. The correct way to run a shell script is to leave out the '-c'. > Elbow makes the script executable, so an even better approach is to just > leave out "csh", and do "os.system('./%s.csh' % project)". Then, the > script can be in sh/bash/etc. Maybe the was the intent of using '-c'? > > Thanks, > Joe Krahn > > > ------------------------------ > > Message: 3 > Date: Wed, 04 Nov 2009 10:09:47 -0800 > From: Nigel W Moriarty <NWMoriarty(a)lbl.gov> > Subject: Re: [phenixbb] Elbow ligand building > To: PHENIX user mailing list <phenixbb(a)phenix-online.org> > Message-ID: <4AF1C36B.3010500(a)lbl.gov> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Joe > > On 11/4/09 9:35 AM, Joe Krahn wrote: > >> I have an accurate reference structure, but elbow seems to "regularize" >> the coordinates in a way the distorts the structure. Is there a way to >> disable this? >> >> > eLBOW will always run a simple optimisation unless you specify the final > geometry you like using > > phenix.elbow --final-geometry accurate.pdb > > Naturally, you are smart to use a better input format thus > > phenix.elbow filename.sdf --final-geometry accurate.pdb > >> With --opt, QM optimization should hopefully remove distortions, but it >> is not doing a very good job for this molecule. So, I decided to >> optimize using Gaussian, and a better basis set. >> >> > Good thinking. > >> It seems that the Gaussian interface is still fairly simple, and it >> seems that you have to edit the Gaussian.csh template. So, I did that, >> but got the "Gaussian does not seem to be installed" message. >> Unfortunately, elbow runs the Gaussian script with output to /dev/null, >> so there is no way to see any error messages. Maybe that should be done >> only when the --quiet flag is given. >> >> > Maybe I'll implement this with a --verbose flag. > >> I edited the Python source to let errors go to the tty, and found that >> the problem is in the way the script is invoked using "csh -c %s.csh". >> That only works if "." is in your $PATH, which is often the case. It >> also invokes an extra instance of csh, because it is invoked as a system >> command. The correct way to run a shell script is to leave out the '-c'. >> Elbow makes the script executable, so an even better approach is to just >> leave out "csh", and do "os.system('./%s.csh' % project)". Then, the >> script can be in sh/bash/etc. Maybe the was the intent of using '-c'? >> > This is old code from before PHENIX had a smart module for running > commands. I'll update to code. > > Nigel > > -- Dr. Leonid A. Sazanov Research group leader Medical Research Council Mitochondrial Biology Unit Wellcome Trust / MRC Building Hills Road Cambridge CB2 0XY WEB: www.mrc-mbu.cam.ac.uk Tel: +44-1223-252910 Fax: +44-1223-252915

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Elbow ligand building
by Joe Krahn 04 Nov '09

04 Nov '09

I am having some problems building ligand parameters with elbow. I have an accurate reference structure, but elbow seems to "regularize" the coordinates in a way the distorts the structure. Is there a way to disable this? With --opt, QM optimization should hopefully remove distortions, but it is not doing a very good job for this molecule. So, I decided to optimize using Gaussian, and a better basis set. It seems that the Gaussian interface is still fairly simple, and it seems that you have to edit the Gaussian.csh template. So, I did that, but got the "Gaussian does not seem to be installed" message. Unfortunately, elbow runs the Gaussian script with output to /dev/null, so there is no way to see any error messages. Maybe that should be done only when the --quiet flag is given. I edited the Python source to let errors go to the tty, and found that the problem is in the way the script is invoked using "csh -c %s.csh". That only works if "." is in your $PATH, which is often the case. It also invokes an extra instance of csh, because it is invoked as a system command. The correct way to run a shell script is to leave out the '-c'. Elbow makes the script executable, so an even better approach is to just leave out "csh", and do "os.system('./%s.csh' % project)". Then, the script can be in sh/bash/etc. Maybe the was the intent of using '-c'? Thanks, Joe Krahn

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re-run jobs in GUI
by Leo Sazanov 04 Nov '09

04 Nov '09

Hi, in a new GUI how can one re-run previous jobs (to make some modifications to them)? If I just try to open parameter (.eff) file from the main file menu in Autobuild, the file does not show up, even though it exists. Just adding it to the list of input files works, but the information is not passed on into GUI? -- Dr. Leonid A. Sazanov Research group leader Medical Research Council Mitochondrial Biology Unit Wellcome Trust / MRC Building Hills Road Cambridge CB2 0XY WEB: www.mrc-mbu.cam.ac.uk Tel: +44-1223-252910 Fax: +44-1223-252915

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low resolution, high B, low R
by gerwald jogl 03 Nov '09

03 Nov '09

Hi All, I am working on a 4.2 A structure and feel somewhat uneasy about my refinement results. First, my R/Rfree at the moment is 0.18/0.25. The refinement is not complete and weights are not optimized, so the gap may get smaller. It's just that at 4.2 A, I don't quite expect such low R factors... There is nothing funny with the data, no messing around, no conversions - straightforward data set and a basic rigid body, individual_sites+group_adps, simulated annealing, no tls yet, no ncs. I am aware that one possible answer is that phenix is just really good... The other issue is about B factors. Phenix will happily refine B factors to values of 300 if there is no density in the region and that brings up the question about how to deal with disordered regions in general. Are there any current opinions out there about what would constitute 'reasonable' B factors? Conversely, when would a B factor indicate that it is better to remove the residue from the model instead of leaving it and calling it disordered. Also, this is after group_adp at 4.2 A - should I maybe take this as an indication that this is asking too much from the data and go back to a single adp per chain and tls? All comments are appreciated. Thanks! Gerwald

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Re: [phenixbb] phenixbb Digest, Vol 48, Issue 2
by Xuewu Zhang 03 Nov '09

03 Nov '09

You are right. It started in the 2nd macro cycle. I should have been a little more patient. Sorry about it. Thanks, Xuewu On Tue, Nov 3, 2009 at 2:00 PM, <phenixbb-request(a)phenix-online.org> wrote: > Send phenixbb mailing list submissions to > phenixbb(a)phenix-online.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.phenix-online.org/mailman/listinfo/phenixbb > or, via email, send a message with subject or body 'help' to > phenixbb-request(a)phenix-online.org > > You can reach the person managing the list at > phenixbb-owner(a)phenix-online.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of phenixbb digest..." > > > Today's Topics: > > 1. Re: optimization of wxc and wxu (Xuewu Zhang) > 2. Re: optimization of wxc and wxu (Pavel Afonine) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 3 Nov 2009 08:28:58 -0600 > From: Xuewu Zhang <xuewu.zhang(a)gmail.com> > Subject: Re: [phenixbb] optimization of wxc and wxu > To: phenixbb(a)phenix-online.org > Message-ID: > <926abad50911030628h31d09c53m59c2c84f1d024596(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Hi phenix developers/gurus, > > I am using the latest night build of phenix on OS X snow leopard. I found > that phenix ignores these lines in my custom refinement file: > > refinement.target_weights.optimize_wxc="True" > refinement.target_weights.optimize_wxu="True" > > Manually setting up the scale factors however works. I am not sure whether > this is a bug or a platform related issue. > > Thanks, > Xuewu Zhang >

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Re: [phenixbb] optimization of wxc and wxu
by Xuewu Zhang 03 Nov '09

03 Nov '09

Hi phenix developers/gurus, I am using the latest night build of phenix on OS X snow leopard. I found that phenix ignores these lines in my custom refinement file: refinement.target_weights.optimize_wxc="True" refinement.target_weights.optimize_wxu="True" Manually setting up the scale factors however works. I am not sure whether this is a bug or a platform related issue. Thanks, Xuewu Zhang

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GUI and X servers
by Leo Sazanov 02 Nov '09

02 Nov '09

Hi, I am accessing our linux server (where phenix sits) via Exceed X server from Windows machine, and everything used to work fine until recent (I think from v.1-5-2) versions of phenix. Now if I launch new GUI, mouse position is not recognised anymore not only by phenix, but then also by other programs - so if I click on something, something else completely gets activated. I did not change any Exceed settings, so the problem seems to be due to phenix. Also, same thing happens with Xming server. If I access from Mac machine, everything seems to be OK. Has anybody seen it and what could be the reason for that? Thanks! -- Dr. Leonid A. Sazanov Research group leader Medical Research Council Mitochondrial Biology Unit Wellcome Trust / MRC Building Hills Road Cambridge CB2 0XY WEB: www.mrc-mbu.cam.ac.uk Tel: +44-1223-252910 Fax: +44-1223-252915

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Error message when starting phenix gui
by Folmer Fredslund 30 Oct '09

30 Oct '09

Dear all Should I be concerned about this error message when starting phenix 1.5-2?: Gtk-Message: Failed to load module "canberra-gtk-module": libcanberra-gtk-module.so: cannot open shared object file: No such file or directory Best regards, Folmer Fredslund

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Converting .mtz to xplor or having phenix output to xplor file
by Sam Stampfer 28 Oct '09

28 Oct '09

Hi, This isn't exactly phenix-related but someone might know an easy solution. I'm trying to open an electron density map in pymol. It won't open .mtz files and the .xplor files I generated from ccp4i don't seem to work either. I need to have my density as a .xplor file in order for pymol to open it (I think). How would I generate a .xplor file from .mtz? Or, alternately, how can I set phenix to output a .xplor file? I've had it output to a cns file instead of .mtz but that didn't help me get it in .xplor format. Thanks! -Sam

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external program interference : libwx_gtk2ud-2.8.so.0 not found on ubuntu 64 bit
by hari jayaram 27 Oct '09

27 Oct '09

I just downloaded and installed phenix 1.5.2 . I want to run phenix with the GUI on my 64 ubuntu 8.04 box When I run phenix I get the following error: hari@charlie:~$ phenix Traceback (most recent call last): File "/usr/local/phenix-1.5-2/phenix/wxGUI2/command_line/main.py", line 13, in <module> run(sys.argv[1:]) File "/usr/local/phenix-1.5-2/phenix/wxGUI2/command_line/main.py", line 7, in run from wxGUI2 import App File "/usr/local/phenix-1.5-2/phenix/wxGUI2/__init__.py", line 109, in <module> import wx File "/rawdata12/wx-widgets-read-only/wxPython/wx/__init__.py", line 45, in <module> from wx._core import * File "/rawdata12/wx-widgets-read-only/wxPython/wx/_core.py", line 4, in <module> import _core_ ImportError: libwx_gtk2ud-2.8.so.0: cannot open shared object file: No such file or directory I know that I should not be getting this error because I have wxwidgets and wxpython installed and I have wx working on this machine for other apps. Consequently I do have a libwx_gtk2ud-2.8.so.0 on my LD_LIBRARY_PATH. I tried with and without a libwx_gtk2ud-2.8.so.0 in my LD_LIBRARY_PATH and I still got the same error. Any ideas why phenix GUI does not start? Thanks Hari hari@charlie:~$ which phenix /usr/local/phenix-1.5-2/build/intel-linux-2.6-x86_64/bin/phenix hari@charlie:~$ echo $LD_LIBRARY_PATH /home/hari/ccp4-6.0.99e/lib::/home/hari/ccp4-6.0.99e/extralib

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Command to call/read external file when running phenix.refine from
by Ashley Pike 23 Oct '09

23 Oct '09

Hi, I am running phenix.refine(v.1.5.2) from the command line using a batch file containing all my customised options ie. phenix.refine my_parameters. From this batch file (my_parameters) I also want to include additional geometric and NCS restraints. Rather than have them clutter things up, I want to call/invoke them from an external file instead. I had been told that this is possible using the command 'include file <filename>' but it seems that this is not doing what I had hoped. When run in this way phenix.refine doesn't complain but is not using the restraints. Needless to say everything is fine when I actually include the information directly in the batch file. Any hints what I am doing wrong? Cheers, Ashley

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1.5.2 and validation
by Mark Collins 23 Oct '09

23 Oct '09

Hi I just installed 1.5.2 and tried it out for a few hours this afternoon. Is it possible to run the phenix programs from the command line without being forced to launch the shiney new gui? I have 3 structures I had considered finished by R/Rfree and Molprobity. I was playing around with polygons (great way to quickly assess the structure) and found that 2 of the 3 strucutres are "bad" with very low RMSDs for bonds, angles, chirality, dihedrals and planarity. All were refined with phenix 1.3, but they are all fairly small ~80-90 residues. So do I need to go back and revisit these, advice much appreciated? Also I found that I can edit the validate_0.eff (from phenix/project_data/ ) and run the file from the command line. But is there a way to actually change keys_to_show and fiters for polygon in the gui? Also it seems that the *twinned crashed the validation when run this way (bug reported). Thanks Mark

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The new GUI is really nice!
by Laurie Betts 23 Oct '09

23 Oct '09

I think I initially sent this to the wrong address, sorry. Just wanted to say: I just downloaded the new version of PHENIX (1.5-2) on my Mac; I had a lot of trouble with previous versions using the GUI (but really like the command line driven flexibility), but now playing around with the new one, I think I will become hooked. Thank you all VERY much from all of us phenix-o-philes. Laurie Betts

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new GUI is really nice
by Laurie Betts 23 Oct '09

23 Oct '09

I just downloaded the new version of PHENIX (1.5-2) on my Mac; I had a lot of trouble previously using the GUI (but really like the command line driven flexibility), but now playing around with the new one, I think I will become hooked. Thank you all VERY much from all of us phenix-o-philes. Laurie

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Re: [phenixbb] AutoMR and capsids
by SIPPEL,KATHERINE H 23 Oct '09

23 Oct '09

Dear Randy, > If you're sure that there are 3 full copies (and that you > couldn't, say, have six half-copies sitting on crystallographic > 2-folds), the best would be to search for full capsids. Now, for > each copy there are 60 different ways that the capsid could be > oriented, but the version of Phaser distributed with the latest > Phenix release should recognize the internal symmetry -- let us > know if it doesn't! I'm pretty sure its not actually full copies. The unit cell is 262.9, 262.9, 609.1 with an R32 space group. I'm downloading the latest release at the moment. > If it turns out that a capsid is sitting on a symmetry axis, > Phaser will probably reject it because of an outrageous number of > clashes. In that case, you should turn off the clash test, just > look for one copy, and then examine the overlapped solution to > see which part of the capsid is crystallographically unique. Thanks for the tips on the ASU, I wouldn't have thought of that. > Hi Katherine, > Back when I did this with HBV I had one capsid per > crystallographic AsU and I >used Amore (pre-phaser or phenix). I > searched with the icosohedral ASU >looking for 60 copies, and was > surprised how easily the solution fell out. If >you use this > strategy, you really just need one icos ASU per capsid and you > >can then expand the rest using standard icos symmetry. > I think the answer will be do what's easiest, and if it's 99% ID > it should >fall out pretty easily anyway. Bear in mind that > depending on what you've >done to these capsids the icos ASU's > may have slightly re-oriented (in my case >I had added a drug > that kept the icos ASU identical but had tilted the whole >thing > relative to the plane of the capsid). This may also guide your > strategy. > Good luck, > Christina Our standard protocol is Amore with CNS. When Amore failed I thought I might try something different. I have really enjoyed Phenix for my small proteins and thought that I might take advantage of that lovely NCS feature in phenix.refine. I just wasn't sure how to proceed within the AutoMR program. Obviously in the end I will go with what works. > PS- Isn't Mavis around in Florida somewhere, or are you even in > her lab? She >and Rob are a great resource.... I do work for Rob and Mavis and they are a fabulous resource. Best bosses ever (and no they won't see this, its just the truth). Thanks for the help, Katherine > On Oct 22 2009, SIPPEL,KATHERINE H wrote: > >> Dear all, >> >> I am currently trying to use AutoMR to do molecular replacement >> on an icosahedral virus capsid. It is a T=1 capsid so there are >> 60 copies of the monomer per capsid and based on the Matthews >> coefficient there are ~3 capsids in the unit cell. The search >> model is 99% identical (thank God) but I am unsure how to >> approach this. >> >> Do I used the 60-mer as the model and search for three copies? >> Do I use a monomer for the model and search for 180 copies? >> Should I break the model down to smaller pieces (i.e. a 30-mer >> and copies=6, or 12-mer and copies=15)? >> >> I would appreciate any help I can get on this one. >> >> Thanks, >> >> Katherine >> >> -- >> SIPPEL,KATHERINE H >> Ph. D. candidate >> Department of Biochemistry and Molecular Biology >> College of Medicine >> University of Florida >> >> _______________________________________________ >> phenixbb mailing list >> phenixbb(a)phenix-online.org >> http://www.phenix-online.org/mailman/listinfo/phenixbb >> > > _______________________________________________ > phenixbb mailing list > phenixbb(a)phenix-online.org > http://www.phenix-online.org/mailman/listinfo/phenixbb > > -- SIPPEL,KATHERINE H Ph. D. candidate McKenna Lab Department of Biochemistry and Molecular Biology College of Medicine University of Florida

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Another questions: water for adp and partial occupancy
by Young-Jin Cho 22 Oct '09

22 Oct '09

Hi, I thought we should put water molecules as isotropic and full occupancies. However, I saw different cases. So I am wondering the reasons for putting waters as anisotropic and with partial occupancies in an active sites. Does any one have this kind of experience or can you explain the advantage or disadvante of this types of strategy? Thanks in advance, Young-Jin Cho

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AutoMR and capsids
by SIPPEL,KATHERINE H 22 Oct '09

22 Oct '09

Dear all, I am currently trying to use AutoMR to do molecular replacement on an icosahedral virus capsid. It is a T=1 capsid so there are 60 copies of the monomer per capsid and based on the Matthews coefficient there are ~3 capsids in the unit cell. The search model is 99% identical (thank God) but I am unsure how to approach this. Do I used the 60-mer as the model and search for three copies? Do I use a monomer for the model and search for 180 copies? Should I break the model down to smaller pieces (i.e. a 30-mer and copies=6, or 12-mer and copies=15)? I would appreciate any help I can get on this one. Thanks, Katherine -- SIPPEL,KATHERINE H Ph. D. candidate Department of Biochemistry and Molecular Biology College of Medicine University of Florida

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Partially occupied SO4 and waters
by Chris Waddling 21 Oct '09

21 Oct '09

I have a partially occupied sulfate ion that is refining to 55% along with one of two arginine side chains. Associated with the second conformation of the arginine, there is positive density for three partially occupied waters. In Shelxl, I can use the PART identifier to specify that the sulfate ion and the waters are not present simultaneously and are associated with their respective Arg side chain conformation. Is there a way to do this in Phenix? Thanks, Chris -- Dr. Christopher A. Waddling, Ph.D. University of California at San Francisco

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Re: [phenixbb] Molprobity percentile statistic
by hari jayaram 20 Oct '09

20 Oct '09

Thanks Nat and Pavel for your emails, Thanks for the suggestion of using phenix.polygon. The comparative analysis of my structure relative to others at my resolution was what I was after. And thats the reason I liked the molprobity statistics expressed as percentile since it helped me realize how far I have to go relative to other structures at the PDB. If its not too difficult can I cast my vote to report it inside the phenix GUI. Its just that running the full analysis inside of phenix is significantly faster than running it on the duke webservers. In molprobity If I remember correctly the overall score is some weighted average, and the molprobity paper also cautions against taking it too literally. Also If I remember the molprobity percentiles are absolute and not only composed of structures at similar resolutions . Regardless thanks for the hint about phenix.polygon . I just looked at my phenix.polygon report and I am afraid its a little asymmetric. Hari On Mon, Oct 19, 2009 at 9:58 PM, hari jayaram <harijay(a)gmail.com> wrote: > Thanks Nat and Pavel for your emails, > Thanks for the suggestion of using phenix.polygon. The comparative > analysis of my structure relative to others at my resolution was what > I was after. > > And thats the reason I liked the molprobity statistics expressed as > percentile since it helped me realize how far I have to go relative to > other structures at the PDB. If its not too difficult can I cast my > vote to report it inside the phenix GUI. Its just that running the > full analysis inside of phenix is significantly faster than running it > on the duke webservers. > > In molprobity If I remember correctly the overall score is some > weighted average, and the molprobity paper also cautions against > taking it too literally. Also If I remember the molprobity percentiles > are absolute and not only composed of structures at similar > resolutions . > > Regardless thanks for the hint about phenix.polygon . > I am attaching a snapshot of my polygon ..I an afraid its a little > asymmetric. > > Hari > > On Mon, Oct 19, 2009 at 7:48 PM, Pavel Afonine <PAfonine(a)lbl.gov> wrote: >> Hi Hari, >> >> if you run phenix.model_vs_data you will get those numbers (namely: >> Ramachandran outliers, clashscores, CB-deviations; although you will not >> get "Molprobity score" simply because I don't know what it is and so I >> didn't add it): >> >> phenix.model_vs_data model.pdb data.mtz >> >> Nat: every time time you run model_vs_data for whatever purpose (getting >> fmodel, etc...) you get an object that contains all these numbers. >> >> Pavel. >> >> >> On 10/19/09 3:32 PM, hari jayaram wrote: >>> Hi i just started using the phenix GUI front-end to Molprobity . Its >>> really nice the way it plugs into coot and displays all the statistics >>> etc. >>> Is there any place that it also reports the percentile clashscore and >>> percentile Molprobity score for overall model quality a la the >>> webserver at molprobity.biochem.duke.edu >>> >>> Thanks >>> Hari >>> _______________________________________________ >>> phenixbb mailing list >>> phenixbb(a)phenix-online.org >>> http://www.phenix-online.org/mailman/listinfo/phenixbb >>> >> _______________________________________________ >> phenixbb mailing list >> phenixbb(a)phenix-online.org >> http://www.phenix-online.org/mailman/listinfo/phenixbb >> >

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Molprobity percentile statistic
by hari jayaram 20 Oct '09

20 Oct '09

Hi i just started using the phenix GUI front-end to Molprobity . Its really nice the way it plugs into coot and displays all the statistics etc. Is there any place that it also reports the percentile clashscore and percentile Molprobity score for overall model quality a la the webserver at molprobity.biochem.duke.edu Thanks Hari

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