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Antibody-mediated broad sarbecovirus neutralization through ACE2 molecular mimicry. Park YJ, De Marco A et al. Science. 2022 Jan 28;375(6579):449-454.

Architecture of the chloroplast PSI-NDH supercomplex in Hordeum vulgare. Shen L, Tang K et al. Nature. 2022 Jan 27;601(7894):649–654.

Structure of Hsp90-p23-GR reveals the Hsp90 client-remodelling mechanism. Noddings CM, Wang RY et al. Nature. 2022 Jan 20;601(7893):465-469.

Cryo-EM structures of amyloid-β 42 filaments from human brains. Yang Y, Arseni D et al. Science. 2022 Jan 14;375(6577):167-172.

Single particle cryo-EM structure of the outer hair cell motor protein prestin. Butan C, Song Q et al. Nat Commun. 2022 Jan 12;13(1):290.

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News

December 8, 2021

The ChimeraX 1.3 production release is available. See the change log for what's new.

October 22, 2021

The ChimeraX 1.3 release candidate is available. Please try it and report any issues. See the change log for what's new.

May 28, 2021

The ChimeraX 1.2 production release is available. See the change log for what's new.

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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 and the Office of Cyber Infrastructure and Computational Biology, National Institute of Allergy and Infectious Diseases.

Feature Highlight

1g74 per-model clipping

Per-Model Clipping

Front/back (rotatable) clipping can be applied selectively to some models but not others. This is most often used to slice a molecular surface but not the corresponding atomic structure.

For example, the protein in PDB entry 1g74 has an oleic acid residue OLA in an interior pocket. The script in pmc.cxc shows the protein surface, activates front clipping for all models, and then turns it off for just the atomic model, as shown in the figure. The clipping plane can be translated and rotated interactively with the mouse .

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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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