- Chimera-users - RBVI Mailing Lists

Error with color byattribute
by svle＠tiscali.it 13 Apr '25

13 Apr '25

Hi, I'm using the Attribute Assignment Files tutorial with the commands: open [1] 1pho open [2] kdHydrophobicity.defattr [3] color byattribute [4] kdHydrophobicity palette ^RdYlBu select [5] ::kdHydrophobicity>2.0 I've only substituted 1pho with 1caz. For the command: color byattribute [6] kdHydrophobicity palette ^RdYlBu I receive the error "color byattribute is undefined" with different version of chimera. Any suggestions? Thanks. Saverio

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Exporting PDB in correct coordinate system
by James Nettles 11 Apr '25

11 Apr '25

Hello, I have built a Chimera model of N-term and C-term folding associated with a particular dimeric crystal structure associated with HCV. The crystal structure (1zh1) is our reference and we identified theoretical low-energy folds that correlate well with our biological data. We want to be able to upload pdb’s of our folding models with the data presented in the paper so that readers can also see the interactions in 3D. I used the writePDB function and chose to Save relative to 1zh1 in Model Panel, but the results come out misaligned. I’m obviously doing something wrong, have tried various things but have not been able to figure this out. Any tips? Thanks, Jim _____________________ James Nettles, PhD nettlesconsulting(a)gmail.com +01.404.966.4617

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Save PDBs relative to each other
by Elaine Meng 11 Apr '25

11 Apr '25

On Apr 11, 2025, at 9:35 AM, James Nettles <nettlesconsulting(a)gmail.com> wrote: > > Hi Elaine, I tried submitting a new question to the list, but received a response that I’m not a list member. > > I am trying to output some models in PDB format and am having problems getting the coordinates of the sports to align properly when read back in. > > I haven’t been able to figure what I'm doing wrong. > > Your help will be appreciated. > > Jim Hi Jim, That message is probably caused by sending the message from a different address than what is signed up to the list. If so, your question has to be approved by the moderator (not me) but usually it is within a day. Otherwise we would be inundated with spam messages from addresses that aren't list members. Re your question: If you moved one model relative to the other and want to maintain their relationship, you need to use the save "relative" option. Doesn't matter which model is relative to which, as long as they are all relative to the same model. This is in both the File... Save dialog and the "write" command. <https://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/write.html> These are the address for managing list subscriptions (Chimera and ChimeraX users) <https://mail.cgl.ucsf.edu/mailman/mailman3/lists/chimera-users.cgl.ucsf.edu/> <https://mail.cgl.ucsf.edu/mailman/mailman3/lists/chimerax-users.cgl.ucsf.ed…> ChimeraX has an analogous relative saving option for PDB files in both the File... Save dialog and the "save" command (instead of Chimera's "write" command). Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Resource for Biocomputing, Visualization, and Informatics Department of Pharmaceutical Chemistry University of California, San Francisco

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Inquiry about Using UCSF Chimera for Biology Olympiad
by Oliwier Różański 02 Apr '25

02 Apr '25

Dear UCSF Chimera Team, I am a student participating in the *Biology Olympiad* and would like to ask if I am allowed to use *UCSF Chimera* for this competition. Could you please confirm if this is permitted and if there are any specific licensing requirements? Thank you for your assistance.

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Re: UCSF Chimera Download
by Elaine Meng 01 Apr '25

01 Apr '25

The recommended address for asking questions about Chimera is chimera-users(a)cgl.ucsf.edu <mailto:chimera-users@cgl.ucsf.edu> ... you do not need to send another message, I have CC'd that address on this message so that somebody else can answer. I don't know the details of Windows download. My only guess is to wait for a few minutes to be sure the download is finished before you try to open it. Maybe there is a temporary filename for the partial download that changes after the download is complete. Regards, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Resource for Biocomputing, Visualization, and Informatics Department of Pharmaceutical Chemistry University of California, San Francisco > On Mar 31, 2025, at 2:52 PM, Ki Kim <pkhkim(a)gmail.com> wrote: > > Hello, > I am trying to download and install the UCSF Chimera Program. I used the download site as shown below: > > > This is what I have in my download folder: > > > Now, this doesn;t seem to be the right exe file. Did I do something wrong? > I have a Window 11 and 64-bit. > Thank you for your help. > Ki > >

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registration
by YELIZ KAYA 12 Mar '25

12 Mar '25

I registered to the Chimera program with my address yeliz.kaya(a)iuc.edu.tr. Can I find out if I am registered to the Chimera program? Thank you. Assoc. Prof. Dr. Yeliz KAYA IUC Chemistry Department -- *İSTANBUL ÜNİVERSİTESİ-CERRAHPAŞA <https://www.iuc.edu.tr/tr/_>* Yasal Uyarı: <https://bilgiislem.iuc.edu.tr/tr/content/e-posta-hizmetleri/%E2%96%BA-e-pos…> Bu e-posta ve beraberinde iletilen bütün dosyalar sadece göndericisi tarafından alınması amaçlanan yetkili gerçek ya da tüzel kişinin kullanımı içindir. Eğer söz konusu yetkili alıcı değilseniz bu e-postanın içeriğini açıklamanız, kopyalamanız, yönlendirmeniz ve kullanmanız kesinlikle yasaktır ve bu e-postayı derhal silmeniz gerekmektedir. İSTANBUL ÜNİVERSİTESİ-CERRAHPAŞA bu e-postanın içerdiği bilgilerin doğruluğu veya eksiksiz olduğu konusunda herhangi bir garanti vermemektedir. Bu nedenle bu bilgilerin ne şekilde olursa olsun içeriğinden, iletilmesinden, alınmasından ve saklanmasından sorumlu değildir. Bu e-postadaki görüşler yalnızca gönderen kişiye aittir ve İSTANBUL ÜNİVERSİTESİ-CERRAHPAŞA'nın görüşlerini yansıtmayabilir. *ISTANBUL UNIVERSITY-CERRAHPASA <https://www.iuc.edu.tr/tr/_>* Disclaimer <https://bilgiislem.iuc.edu.tr/tr/content/e-posta-hizmetleri/%E2%96%BA-e-pos…>: This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient you are hereby notified that any dissemination, forwarding, copying or use of any of the information is strictly prohibited, and the e-mail should immediately be deleted. ISTANBUL UNIVERSITY-CERRAHPASA makes no warranty as to the accuracy or completeness of any information contained in this e-mail and hereby excludes any liability of any kind for the information contained therein or for the information transmission, reception, storage or use of such in any way whatsoever. The opinions expressed in this e-mail may belong to the sender alone and may not necessarily reflect the opinions of ISTANBUL UNIVERSITY-CERRAHPASA.

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Problem downloading PDBs in Chimera
by Clarke, Oliver 10 Mar '25

10 Mar '25

Hi, Since this weekend, I have been unable to download PDBs from within Chimera (using "open" or Fetch by ID). The same PDBs load fine in ChimeraX or when downloaded manually. Cached PDBs load fine. Cheers Oli

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Setting partial charges to a protein gives same charges in both Gasteiger and AM1-BCC methods. Is that corrects?
by teralexei＠proton.me 03 Mar '25

03 Mar '25

Dear colleagues, calculation of partial charges in Chimera looks to work improperly in my hands. After addcharge or dokprep procedures, independent on method used (am1-bcc or Gasteiger), mol2 files are just the same: @<TRIPOS>MOLECULE .... PROTEIN AMBER ff14SB @<TRIPOS>ATOM 1 N -76.5030 6.5380 -16.5070 N.4 1 ARG 0.1305 2 CA -75.2450 7.2900 -16.2110 C.3 1 ARG -0.0223 .... The problem persist in both Chimera 1.17.3 and ChimeraX. The latter gives even "NO_CHARGES" comment in both (am1-bcc and Gasteiger) cases: @<TRIPOS>MOLECULE .... PROTEIN NO_CHARGES @<TRIPOS>ATOM 1 N -76.5030 6.5380 -16.5070 N.4 1 ARG 0.1305 2 CA -75.2450 7.2900 -16.2110 C.3 1 ARG -0.0223 .... I am not an expert in molecular modeling, sorry. But I think that I am doing something wrong. Could you please help me with setting charges properly? Thank you in advance! PS. I am a newbie here. Please don't hurt me too much. Yours sincerely, Al.

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registration
by YELIZ KAYA 27 Feb '25

27 Feb '25

Dear Sir, As I have attached the image, I registered to the Chimera program. However, I did not receive any e-mail. Can you help me with this? Thank you. Assoc. Prof. Dr. Yeliz KAYA IUC Chemistry Department -- *İSTANBUL ÜNİVERSİTESİ-CERRAHPAŞA <https://www.iuc.edu.tr/tr/_>* Yasal Uyarı: <https://bilgiislem.iuc.edu.tr/tr/content/e-posta-hizmetleri/%E2%96%BA-e-pos…> Bu e-posta ve beraberinde iletilen bütün dosyalar sadece göndericisi tarafından alınması amaçlanan yetkili gerçek ya da tüzel kişinin kullanımı içindir. Eğer söz konusu yetkili alıcı değilseniz bu e-postanın içeriğini açıklamanız, kopyalamanız, yönlendirmeniz ve kullanmanız kesinlikle yasaktır ve bu e-postayı derhal silmeniz gerekmektedir. İSTANBUL ÜNİVERSİTESİ-CERRAHPAŞA bu e-postanın içerdiği bilgilerin doğruluğu veya eksiksiz olduğu konusunda herhangi bir garanti vermemektedir. Bu nedenle bu bilgilerin ne şekilde olursa olsun içeriğinden, iletilmesinden, alınmasından ve saklanmasından sorumlu değildir. Bu e-postadaki görüşler yalnızca gönderen kişiye aittir ve İSTANBUL ÜNİVERSİTESİ-CERRAHPAŞA'nın görüşlerini yansıtmayabilir. *ISTANBUL UNIVERSITY-CERRAHPASA <https://www.iuc.edu.tr/tr/_>* Disclaimer <https://bilgiislem.iuc.edu.tr/tr/content/e-posta-hizmetleri/%E2%96%BA-e-pos…>: This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient you are hereby notified that any dissemination, forwarding, copying or use of any of the information is strictly prohibited, and the e-mail should immediately be deleted. ISTANBUL UNIVERSITY-CERRAHPASA makes no warranty as to the accuracy or completeness of any information contained in this e-mail and hereby excludes any liability of any kind for the information contained therein or for the information transmission, reception, storage or use of such in any way whatsoever. The opinions expressed in this e-mail may belong to the sender alone and may not necessarily reflect the opinions of ISTANBUL UNIVERSITY-CERRAHPASA.

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UCSF chimera problems when fetching PDB id's
by Charles-Alexandre Mattelaer 26 Feb '25

26 Feb '25

Hi all I just wanted to ask if it is normal my Chimera installs have begun throwing errors when fetching PDB’s by ID (eg 1EHZ)? It does work for other PDB codes, eg 6NP2. I used to do this regularly but since a few days I have noticed these errors pop up. It typically returns: “Error reading $PDBcode: No such id: $PDBcode” I am aware Chimera is deprecated and not supported anymore, but I used it for simple tasks eg Autodock Vina which is not supported in ChimeraX and teaching thereof. Kind regards Charles-Alexandre

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