July 2017 - Chimera-users - RBVI Mailing Lists

morph interpolation
by Souroprobho Chowdhury 20 Jul '17

20 Jul '17

Hello, I am trying to use morph interpolate on two (for this post) PDBs (I2.pdb and I3.pdb, attached) but something peculiar is happening. The Hydrogen on the HIS 1082 (N1) does a ‘cork-screw’ like movement. Essentially, instead of interpolating directly from position A to B, it is taking a more round-about angle. A similar movement is observed for the O3 in the T1 O ligand. This problem has come up recurrently in my work and I am yet to find a solution. I have used most of the options that apply on morph interpolate that are mentioned on the chimera website without much improvement. I am using Maestro by Schrodinger to model my structures. Please find attached I2.pdb , I3.pdb and mov_all.pdb. mov_all.pdb is the trajectory file, works on Pymol (I am attaching a pymol script called auto-script.pml as well for selection of the correct residues, and a reasonable representation). The chimera interpolation script is also attached. Thanks! Souro

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Re: [Chimera-users] Define Plane
by Eric Pettersen 18 Jul '17

18 Jul '17

Hi Catherine, Remind me how exactly you are creating the axis in Chimera, and send me whatever script you are using to compute it yourself… —Eric > On Jul 18, 2017, at 8:24 AM, Catherine Jenifer Rajam Rajendran <catrajen(a)umail.iu.edu> wrote: > > Hi Eric, > > I am able to generate the axis. Like you said, we used the x,y,z axis subtracting it from centroid position and did the SVD. > For most cases, the axis is same as Chimera but for few it is little different. I checked the number of atoms used between both and it is same. > Are you using all the atoms or only specific atoms or is there any other thing I am missing? > > Thanks, > Catherine > > On Fri, Jun 30, 2017 at 7:13 PM, Eric Pettersen <pett(a)cgl.ucsf.edu <mailto:pett@cgl.ucsf.edu>> wrote: > Chimera simply calls numpy.linalg.svd (singular value decomposition) on an array of the xyz coordinate (after the centroid position has been subtracted from them). The documentation for numpy.linalg.svd is here: > > https://docs.scipy.org/doc/numpy/reference/generated/numpy.linalg.svd.html <https://docs.scipy.org/doc/numpy/reference/generated/numpy.linalg.svd.html> > > It looks like it in turn calls LAPACK routine_gesdd, which is documented, in general, here: > > https://software.intel.com/en-us/mkl-developer-reference-c-singular-value-d… <https://software.intel.com/en-us/mkl-developer-reference-c-singular-value-d…> > > It’s an implementation of singular value decomposition, described in general terms here: > > https://en.wikipedia.org/wiki/Singular_value_decomposition#Relation_to_eige… <https://en.wikipedia.org/wiki/Singular_value_decomposition#Relation_to_eige…> > > The math is pretty complicated. > > —Eric > > Eric Pettersen > UCSF Computer Graphics Lab > > > > >> On Jun 30, 2017, at 10:09 AM, Catherine Jenifer Rajam Rajendran <catrajen(a)umail.iu.edu <mailto:catrajen@umail.iu.edu>> wrote: >> >> Hi Elaine, >> >> Thank you for helping me understand it. Can you give me more details about how PDB file is decomposed to find the plane and normal. Like, how the eigenvectors are calculated from the atomic coordinates. >> >> Thanks, >> Catherine >> >> On Thu, Jun 29, 2017 at 7:23 PM, Elaine Meng <meng(a)cgl.ucsf.edu <mailto:meng@cgl.ucsf.edu>> wrote: >> >> >> > On Jun 29, 2017, at 2:14 PM, Catherine Jenifer Rajam Rajendran <catrajen(a)umail.iu.edu <mailto:catrajen@umail.iu.edu>> wrote: >> > >> > Hi, >> > >> Hi Catherine, >> >> > I am trying to understand how the plane is defined in chimera. Can you please help me with that? >> > >> > "Define a plane for the specified atoms. Eigenvectors/values are calculated from the atomic coordinates after subtracting the position of their non-mass-weighted centroid. The plane is anchored at the centroid and aligned with the first two eigenvectors (the third eigenvector is normal to the plane)." >> > >> > Define a plane for the specified atoms. >> > - specified atoms, i use 'sel protein’ >> >> OK, so if using the graphical tool (Axes/Planes/Centroids) it uses the selected atoms, meaning all the protein atoms if you had used “sel protein.” If using the “define” command, you can just specify “protein” directly in the command to use all the protein atoms, without making a selection. >> > >> > Eigenvectors/values are calculated from the atomic coordinates >> > - atomic coordinates, so x,y,z coordinates of all atoms. (Can you please explain a bit more like how and what you read from PDB file to define plane). >> >> For the atoms you specified, there are ATOM lines in the PDB file with X,Y,Z coordinates. Each atom is a point in 3D (X,Y,Z). >> >> > >> > after subtracting the position of their non-mass-weighted centroid >> > - how is non-mass-weighted centroid is calculated >> >> It is the centroid of the points (atomic positions), not sure how else to say it. The average position of all the atomic points is the centroid. Non-mass-weighted just means all the atomic points are treated equally, instead of heavier atoms being treated as more important than lighter atoms. >> > >> > The plane is anchored at the centroid >> > - which centroid is this? Is the protein moved to the origin(0,0,0) position? >> > >> The centroid is the same centroid as in your previous question. Nothing is moved. >> > >> > Thanks, >> > Catherine >> >> You’re welcome. I hope this helps, >> Elaine >> ---------- >> Elaine C. Meng, Ph.D. >> UCSF Chimera(X) team >> Department of Pharmaceutical Chemistry >> University of California, San Francisco >> >> >> >> >> _______________________________________________ >> Chimera-users mailing list: Chimera-users(a)cgl.ucsf.edu <mailto:Chimera-users@cgl.ucsf.edu> >> Manage subscription: http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users <http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users> > >

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PROBLEM ABOUT BLAST PROTEIN
by Rosie Spera 18 Jul '17

18 Jul '17

Dear support, I am trying to open Chimera's Blast Protein, but everytime I receive this error: Traceback from web service request (connection setup): Traceback (most recent call last): File "C:\Program Files\Chimera 1.11.2\share\WebServices\opal_client.py", line 11, in __init__ self._setup(serviceName, opalURL, sessionData) File "C:\Program Files\Chimera 1.11.2\share\WebServices\opal_client.py", line 50, in _setup self.sudsClient = Client(self.serviceURL + "?wsdl", **kw) File "C:\Program Files\Chimera 1.11.2\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\client.py", line 115, in __init__ self.wsdl = reader.open(url) File "C:\Program Files\Chimera 1.11.2\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\reader.py", line 150, in open d = self.fn(url, self.options) File "C:\Program Files\Chimera 1.11.2\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\wsdl.py", line 136, in __init__ d = reader.open(url) File "C:\Program Files\Chimera 1.11.2\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\reader.py", line 74, in open d = self.download(url) File "C:\Program Files\Chimera 1.11.2\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\reader.py", line 92, in download fp = self.options.transport.open(Request(url)) File "C:\Program Files\Chimera 1.11.2\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\transport\https.py", line 62, in open return HttpTransport.open(self, request) File "C:\Program Files\Chimera 1.11.2\bin\lib\site-packages\suds_jurko-0.6-py2.7.egg\suds\transport\http.py", line 69, in open raise TransportError(str(e), e.code, e.fp) TransportError: HTTP Error 407: Proxy Authentication Required Typically, if you get a TypeError, it's a problem on the remote server and it should be fixed shortly. If you get a different error or get TypeError consistently for more than a day, please report the problem using the Report a Bug... entry in the Help menu. Please include the traceback printed above as part of the problem description. Traceback from Blastp request: Traceback (most recent call last): File "C:\Program Files\Chimera 1.11.2\share\blastpdb\ParserBlastP.py", line 361, in _initBlast self.opal = OpalService(self.ServiceName) File "C:\Program Files\Chimera 1.11.2\share\WebServices\opal_client.py", line 21, in __init__ raise NonChimeraError("Web service appears " NonChimeraError: Web service appears to be down. See Reply Log for more details. Typically, if you get a TypeError, it's a problem on the remote server and it should be fixed shortly. If you get a different error or get TypeError consistently for more than a day, please report the problem using the Report a Bug... entry in the Help menu. Please include the traceback printed above as part of the problem description. Blast web service appears to be down. See Reply Log for more details. I have configured Chimera to use the proxy server and I have saved the setting. I hope any help. Best wishes Inviato da Outlook<http://aka.ms/weboutlook>

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1st CfP "From Virtual Reality to Immersive Analytics in Bioinformatics"
by baaden＠smplinux.de 18 Jul '17

18 Jul '17

Dear Colleague, 1st CfP "From Virtual Reality to Immersive Analytics in Bioinformatics", February 2018, Burlingame, California, USA ************************************************************************ Special Session at the Stereoscopic Displays and Applications XXIX, Burlingame, California Special Issue of the Journal of Integrative Bioinformatics, vol 15, de Gruyter Berlin ************************************************************************ Bioinformatics usually deals with the smallest entities of life, therefore, visualization plays an important role in this field. Stereoscopic rendering has already been used for a long time for visualizing biological structures, dating back to the first hype of virtual reality technologies 25 years ago when the CAVE was invented and Head-Mounted Displays (HMD) became affordable. Triggered by the success of new, modern HMDs such as Oculus Rift and HTC Vive, Virtual Reality has recently gained a lot of attention again. On the other hand, a new generation of large-scale "computational microscopes" is being established, such as the CAVE2, representing large, nearly 360 degree-spanning visualization facilities. At the same time, advanced "Visual Analytics" solutions have become an important tool in all areas of scientific data analysis, combining visualization, data mining and analysis methods, and user interaction. Uniting both VR and VA, "Immersive Analytics" now starts to make use of new technologies, immersing the scientist into the data, and, in the best case, enabling advanced insights. This special issue will focus on: - What is the legacy of the past? - Which approaches (partly) failed, and which success stories were triggered by Virtual/Augmented Reality in the context of Bioinformatics? - Which new ideas exist to approach now immersive analysis of biological data? - Which methods, technologies and/or applications are expected to change the way we see and perceive biology? More info: http://VR2IAinBioInf.immersive-analytics.org Stereoscopic Displays and Applications XXIX, 28 Jan - 1 Feb 2018, Burlingame, California ************************************************************************ Since 1990, SD&A focuses on developments covering the entire stereoscopic 3D imaging pipeline from capture, processing, and display, to perception. SD&A XXIX will be held as part of the 2018 IS&T International Symposium on Electronic Imaging: Science and Technology at the Hyatt Regency San Francisco Airport, Burlingame, California, USA. The conference brings together practitioners and researchers from industry and academia to facilitate an exchange of current information on stereoscopic imaging topics. http://stereoscopic.org Scope of the Special Session ************************************************************************ Molecular biology produces huge amounts of data in the post-genomic era. This includes data describing metabolic mechanisms and pathways, structural genomic organization, patterns of regulatory regions; proteomics, transcriptomics, and metabolomics. On the one hand, analysis of this data uses essentially the methods and concepts of computer science; on the other hand, the range of biological tasks solved by researchers determines the range and scope of the data. Integrative Bioinformatics is a new area of research using the tools of computer science and electronic infrastructure applied to Biotechnology. We solicit submissions that describe the use of Immersive Analytics for data analysis in biology and Bioinformatics - potential topics include (but are not limited to): - Virtual and Augmented Reality approaches for data analysis - Semi- and fully immersive data exploration - Metabolic and Regulatory Network Modelling and Simulation - Data Integration and Text Mining Approaches - Signal Pathways and Cell Control - Network Analysis - Medical Informatics, Biomedicine and Biotechnology - Integrative whole cell and molecular modelling - Visual Analytics, Visualization, and Animation Key Dates ************************************************************************ - August 15, 2017: Abstract to SD&A 2018 - January 10, 2018: Full manuscript submission due to JIB - February 1, 2018: Conference Presentation - April 2018: Review and revision process finished - May to June 2018: Publication of accepted papers Organizers and Contact ************************************************************************ - Bjorn Sommer, University of Konstanz, Konstanz/Monash University, Melbourne - Marc Baaden, Institut de Biologie Physico-Chimique, Paris - Michael Krone, University of Stuttgart, Stuttgart - Andrew Woods, Curtin University, Perth If you have any question, please contact us: VR2IAinBioInf(a)immersive-analytics.org Journal of Integrative Bionformatics ************************************************************************ The Journal of Integrative Bioinformatics (JIB) is an international open access journal publishing original peer-reviewed research articles covering all aspects of integrative bioinformatics. It was established in 2004 and joined the Open Access family of de Gruyter - one of the oldest German publishers - in 2017. JIB (ISSN 1613-4516) is indexed by PubMed, DBLP Computer Science Bibliography, SCOPUS and Google Scholar. https://www.degruyter.com/view/j/jib For 2017 and 2018 there is no publication fee for articles accepted and published by JIB! Submission ************************************************************************ Only submit your 500-word abstract to the conference (Deadline: August 15, 2017), use option 2 - presentation only), as the full paper has to be submitted to the Journal of Integrative Bioinformatics in the next step (Deadline: January 10, 2018). http://stereoscopic.org/2018/index.html#submit Please follow the SD&A guidelines for writing the abstract: http://stereoscopic.org/2018/index.html#sag Please submit here your full paper (Deadline: January 10, 2018). https://mc.manuscriptcentral.com/dgjib More info and templates you will find here: https://www.degruyter.com/view/j/jib Review Process ************************************************************************ Each paper submitted to this special issue will be rigorously evaluated in a single-blind peer review process. All accepted papers will appear in a special issue of the Journal of Integrative Bioinformatics (JIB). By submitting a paper, the author(s) agree that, if their paper is accepted, they will: - Submit a final, camera-ready version to the publisher on or before the camera ready deadline. - Register at least one author to attend the conference on or before the registration deadline. - Attend the conference (at least one author). - Present the accepted paper at the conference. -- Dr. Marc Baaden - Institut de Biologie Physico-Chimique, Paris mailto:baaden@smplinux.de - http://www.baaden.ibpc.fr FAX: +33 15841 5026 - Tel: +33 15841 5176 ou +33 609 843217

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commands to add red spheres to the ribbon structure
by zhangbin 17 Jul '17

17 Jul '17

Hi Chimera, I would like to know the commands for adding a red sphere to a certain spot in a ribbon structure of a protein (please see the attachment). The command I know worked for older version of the chimera but not this new version 0.1. Thanks, Bin

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axis - length
by Catherine Jenifer Rajam Rajendran 17 Jul '17

17 Jul '17

Hi, I am trying to display an axis in chimera. I have one point - x,y,z co-ordinates and centroid's x,y,z co-ordinates. I want to extend the length of the axis generated using this two points. I tried to create a bild format file. *.cylinder 0.584 0.048 0.810 20.912 5.823 19.703 1* where, second 3 co-ordinates are centroid. It creates an axis but i want to extend the length from centroid point to the other end too. Or, Is there any other way to define it? Please help me. Thanks, Catherine

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Chimera Dowload
by Lance Patten 14 Jul '17

14 Jul '17

Hello, I have been trying to download Chimera using this link <http://www.rbvi.ucsf.edu/chimera/download.html>, but the website will not allow it to download. Is there another website or place to download the program? Thank you, Lance Graduate Research Assistant Nanoscale Materials and Device Group nano.boisestate.edu In some cases, this email may contain proprietary or confidential information. Emails sent from this address should not be forwarded without permission or full understanding that the message does not include any sensitive information.

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http download links are insecure
by Yuri 13 Jul '17

13 Jul '17

Download site and links here are http: http://www.rbvi.ucsf.edu/chimera/download.html http is susceptible to MITM attacks. Checking md5 signatures help, but I bet majority of people just doesn't do it. You need to make the site and download URLs https to make them more secure. Yuri

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rainbow with atom-spec of a portion of a chain
by Cheng, Micah 13 Jul '17

13 Jul '17

I was trying to rainbow a subset of a chain using the rainbow command and the atom-spec: rainbow #0:34-102.a However when run, the entire chain A was colored with rainbow instead just residues 34-102 running the color command with the same atom-spec: color #FFFFFF #0:34-102.a produced the predicted result of only residues 34-102 being colored white Is there a command to rainbow only part of the chain or are there any workarounds to being able to rainbow only a selected portion of a chain? Thanks in advance Micah CONFIDENTIALITY NOTICE: This email communication may contain private, confidential, or legally privileged information intended for the sole use of the designated and/or duly authorized recipient(s). If you are not the intended recipient or have received this email in error, please notify the sender immediately by email and permanently delete all copies of this email including all attachments without reading them. If you are the intended recipient, secure the contents in a manner that conforms to all applicable state and/or federal requirements related to privacy and confidentiality of such information.

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Nvidia Quadro P5000
by Josep TRIVIÑO VALLS 13 Jul '17

13 Jul '17

Hello, I have a brand new computer with a Nvidia P5000. I have not seen anything related with this graphic card but I am not obtaining the expected results when using Chimera. Chimera detects the graphic card and the drivers, and when running the benchmarks it seems like it is working better than, for example, the GeForce GTX TITAN X. I have also been testing with the side view of a large protein, which I can do with a Quadro M4000 on another computer, but with the Quadro P5000 it is not working properly. It works slowly. I am using OpenSuse Leap 42.2 with the newest Nvidia driver 375.66. I have also installed the Cuda libraries. Any hints about what I should do in order to get it working properly? Thanks.

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Chimera-users July 2017