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Recent Citations

Bottom-up design of Ca2+ channels from defined selectivity filter geometry. Liu Y, Weidle C et al. Nature. 2025 Dec 11;648(8093):468–476.

Molecular insights into species-specific ACE2 recognition of coronavirus HKU5. Zhang Y, Li Y et al. Nat Commun. 2025 Dec 4;16(1):10889.

Structural and functional characterization of a metagenomically derived γ-type carbonic anhydrase and its engineering into a hyperthermostable esterase. Bodourian CS, Imran M et al. Protein Sci. 2025 Dec;34(12):e70396.

Noncanonical agonist-dependent and -independent arrestin recruitment of GPR1. Cai H, Lin X et al. Science. 2025 Nov 20;390(6775):eadt8794.

High-resolution cryo-EM analysis of the therapeutic Pseudomonas phage Pa223. Hou CD, Bellis N et al. J Mol Biol. 2025 Nov 1;437(21):169386.

Previously featured citations...

Chimera Search

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News

September 22, 2025

Mac users may wish to defer upgrading to MacOS Tahoe. Currently on that OS the Chimera graphics window is shifted so that it covers the command and status lines.

March 6, 2025

Chimera production release 1.19 is now available, fixing the ability to fetch structures from the PDB (details...).

December 25, 2024

The RBVI wishes you a safe and happy holiday season! See our 2024 card and the gallery of previous cards back to 1985.

Previous news...

Upcoming Events

Please note that UCSF Chimera is legacy software that is no longer being developed or supported. Users are strongly encouraged to try UCSF ChimeraX, which is under active development.
computer generated image

UCSF Chimera is a program for the interactive visualization and analysis of molecular structures and related data, including density maps, trajectories, and sequence alignments. It is available free of charge for noncommercial use. Commercial users, please see Chimera commercial licensing.

We encourage Chimera users to try ChimeraX for much better performance with large structures, as well as other major advantages and completely new features in addition to nearly all the capabilities of Chimera (details...).

Chimera is no longer under active development. Chimera development was supported by a grant from the National Institutes of Health (P41-GM103311) that ended in 2018.

Feature Highlight

EM map morph

Morphing Density Maps

Related density maps can be compared by morphing from one to the other. Several intermediate maps are generated by interpolating between the starting and ending maps. The morph can be viewed interactively and recorded as a movie. The contour level can be adjusted automatically to keep the enclosed volume constant throughout the morph, and other aspects of map display can be adjusted with Volume Viewer.

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Gallery Sample

Peroxiredoxin Wreath

Peroxiredoxins are enzymes that help cells cope with stressors such as high levels of reactive oxygen species. The image shows a decameric peroxiredoxin from human red blood cells (Protein Data Bank entry 1qmv), styled as a holiday wreath.

See also the RBVI holiday card gallery.

(More samples...)


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