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.
ChimeraX on Bluesky:
@chimerax.ucsf.edu
Coulombic electrostatic potential (ESP) can be calculated
and displayed with surface coloring using the command
coulombic
or the
Molecule Display
icon
.
No separate calculation or input ESP file is required.
The image shows the first assembly defined for PDB
3eeb, the protease domain of a toxin from
Vibrio cholerae,
with the default Coulombic coloring: red-white-blue over the value range
–10 to 10. For image setup other than orientation, see the
command file coulombic.cxc.
For how to add a color key and associated label, see the
Protein-Ligand Binding Sites tutorial.
More features...
The GDP- and GTP-bound conformations of the transducin α-subunit
(1tag and
1tnd, respectively) differ primarily in three regions,
termed switch 1, switch 2, and switch 3. The structures have been superimposed with
matchmaker
and shown as cartoons,
with “empty” outlines where the structures are almost the same
(for simplicity, only one conformation's outlines are shown).
The GTP analog GTPγS is displayed as spheres color-coded by heteroatom.
For 2D labels
and image setup other than structure orientation,
see the command file switch.cxc.
More images...