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Featured Citations

Stereochemistry in the disorder-order continuum of protein interactions. Newcombe EA, Due AD et al. Nature. 2024 Dec 19;636(8043):762–768.

MCM double hexamer loading visualized with human proteins. Weissmann F, Greiwe JF et al. Nature. 2024 Dec 12;636(8042):499–508.

Multiple mechanisms for licensing human replication origins. Yang R, Hunker O et al. Nature. 2024 Dec 12;636(8042):488–498.

Molecular sociology of virus-induced cellular condensates supporting reovirus assembly and replication. Liu X, Xia X et al. Nat Commun. 2024 Dec 6;15(1):10638.

Broadly inhibitory antibodies to severe malaria virulence proteins. Reyes RA, Raghavan SSR et al. Nature. 2024 Dec 5;635(8041):182–189.

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News

December 12, 2024

The ChimeraX 1.9 production release is available! See the change log for what's new.

October 14, 2024

Planned downtime: The ChimeraX website, Toolshed, web services (Blast Protein, Modeller, ...) and cgl.ucsf.edu e-mail will be unavailable starting Monday, Oct 14 10 AM PDT, continuing throughout the week and potentially the weekend (Oct 14-20).

August 1, 2024

Planned downtime: The ChimeraX website, Toolshed, web services (Blast Protein, Modeller, ...) and cgl.ucsf.edu e-mail will be unavailable August 1, 3-6 pm PDT.

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UCSF ChimeraX

UCSF ChimeraX (or simply ChimeraX) is the next-generation molecular visualization program from the Resource for Biocomputing, Visualization, and Informatics (RBVI), following UCSF Chimera. ChimeraX can be downloaded free of charge for academic, government, nonprofit, and personal use. Commercial users, please see ChimeraX commercial licensing.

ChimeraX is developed with support from National Institutes of Health R01-GM129325, Chan Zuckerberg Initiative grant EOSS4-0000000439, and the Office of Cyber Infrastructure and Computational Biology, National Institute of Allergy and Infectious Diseases.

Feature Highlight

DNA/protein complex with struts

Struts for 3D Printing

Structures can be reinforced for 3D printing with pseudobonds. In this DNA-transcription factor complex (PDB 5ego), proteins are shown as ribbons and the DNA as a molecular surface. The pseudobonds in blue were read in from a manually created file, 5ego.pb, and further reinforcements in light gray were added automatically with the struts command. For image setup other than orientation, see the command file struts.cxc.

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Example Image

HIV-1 protease B-factor coloring

B-factor Coloring

Atomic B-factor values are read from PDB and mmCIF input files and assigned as attributes that can be shown with coloring and used in atom specification. This example shows B-factor variation within a structure of the HIV-1 protease bound to an inhibitor (PDB 4hvp). For complete image setup, including positioning, color key, and label, see the command file bfactor.cxc.

Additional color key examples can be found in tutorials: Coloring by Electrostatic Potential, Coloring by Sequence Conservation

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