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Recent Citations

The path of pre-ribosomes through the nuclear pore complex revealed by electron tomography. Delavoie F, Soldan V et al. Nat Commun. 2019 Jan 30;10(1):497.

FGF21 trafficking in intact human cells revealed by cryo-electron tomography with gold nanoparticles. Azubel M, Carter SD et al. eLife. 2019 Jan 28;8. pii: e43146.

Structural basis for species-selective targeting of Hsp90 in a pathogenic fungus. Whitesell L, Robbins N et al. Nat Commun. 2019 Jan 24;10(1):402.

GABAA receptor signalling mechanisms revealed by structural pharmacology. Masiulis S, Desai R et al. Nature. 2019 Jan 24;565(7740):454-459.

Chemical cross-linking enables drafting ClpXP proximity maps and taking snapshots of in situ interaction networks. Fux A, Korotkov VS et al. Cell Chem Biol. 2019 Jan 17;26(1):48-59.e7.

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November 17, 2018

Chimera production release 1.13.1 is now available; see the release notes for what's new. The Mac version requires OS 10.10 or later.

October 22, 2018

Mac users: the 1.13.1 release candidate and recent daily builds contain a fix for Mojave (OS 10.14). These versions require OS 10.10 or later.

September 21, 2018

Mac users are advised to hold off upgrading to Mojave until we find a fix for Chimera buttons not being shown until the windows containing them are resized.

(Previous news...)

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UCSF Chimera is a highly extensible program for interactive visualization and analysis of molecular structures and related data, including density maps, supramolecular assemblies, sequence alignments, docking results, trajectories, and conformational ensembles. High-quality images and animations can be generated. Chimera includes complete documentation and several tutorials, and can be downloaded free of charge for academic, government, nonprofit, and personal use. Chimera is developed by the Resource for Biocomputing, Visualization, and Informatics (RBVI), supported in part by the National Institutes of Health (P41-GM103311).

UCSF ChimeraX (or simply ChimeraX) is the next-generation molecular visualization program from the RBVI, following UCSF Chimera.

Feature Highlight

Screening Docked Molecules

View Dock image

Given the structures of ligand and receptor molecules, docking programs calculate possible binding modes. In virtual screening, small organic compounds (typically from a database of many thousands) are treated as possible ligands, and a target macromolecule is treated as the receptor.

ViewDock facilitates the interactive selection of compounds from the output of docking programs, including DOCK and Maestro/Glide. The hits can be viewed in the context of the binding site and sorted or screened by various properties such as score or number of hydrogen bonds to the receptor. The Dock Prep tool can be used to prepare structures for docking or other calculations by adding hydrogens, assigning partial charges, and performing other related tasks.

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Gallery Sample

Sliced Potassium Channel

Potassium channel (Protein Data Bank entry 1bl8) on a dark slate blue background with potassium ions shown in firebrick. The channel is comprised of four chains. Each chain has been rainbow-colored from blue at the N-terminus to red at the C-terminus, but only the surface of the channel is shown. The surface has been sliced with a per-model clipping plane. The surface cap color is plum except with opacity set to 0.8. The shininess and brightness have been set to 128 and 8, respectively, and the lights on the scene have been moved from their default positions. The subdivision quality (related to the smoothness of the spherical ions) is 5.0, and the molecular surface was computed with probe radius and vertex density set to 1.0 and 6.0, respectively. (More samples...)

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