Quick Links
Featured Citations
BRAF oncogenic mutants evade autoinhibition through a common mechanism. Lavoie H, Jin T et al. Science. 2025 May 29;388(6750):eadp2742.
MFSD6 is an entry receptor for enterovirus D68. Varanese L, Xu L et al. Nature. 2025 May 29;641(8065):1268–1275.
BMAL1-HIF2A heterodimer modulates circadian variations of myocardial injury. Ruan W, Li T et al. Nature. 2025 May 22;641(8064):1017-1028.
Glutamate gating of AMPA-subtype iGluRs at physiological temperatures. Kumar Mondal A, Carrillo E et al. Nature. 2025 May 15;641(8063):788–796.
Molecular basis of influenza ribonucleoprotein complex assembly and processive RNA synthesis. Peng R, Xu X et al. Science. 2025 May 15;388(6748):eadq7597.
More citations...News
May 7, 2025
The ChimeraX 1.10 release candidate is available – please try it and report any issues. See the change log for what's new.
March 19, 2025
![]() |
March 1, 2025
Upcoming Events
May 27, 2025
Biophysical Society 1-hr online tutorial: Biophysics101: Visualizing proteins with ChimeraX at 3pm Eastern (requires registration)
June 24, 2025
PDB101 1-hr online tutorial: Introduction to molecular animation at 1pm Eastern, 10am Pacific: (requires registration)
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.
Feature Highlight
A “palette” or ordered series of colors
is used to color items sequentially
(rainbow)
or by values such as density. The ten chains in PDB
5o3l (paired tau filament)
have been colored with the commands shown as
2D labels
in the images. The first two examples at left use
predefined
palettes (credit to www.ColorBrewer.org, color specifications and designs
by Cynthia A. Brewer, Pennsylvania State University), whereas the third shows
specifying colors
individually.
Example Image
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
Color Palettes
More features...
B-factor Coloring
About RBVI | Projects | People | Publications | Resources | Visit Us
Copyright 2018 Regents of the University of California. All rights reserved.