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
Protein α-helices can be shown as curved-cylinder “tubes“
with the
cartoon style
command. Helix tube mode is an alternative to the standard spiraling ribbons,
and both modes are fully integrated with coil and β-strand cartoons.
The structure at left is an AMPA-subtype glutamate receptor
bound to the antiepileptic drug perampanel
(PDB 5l1f).
The receptor is tetrameric, and each chain is rainbow
color-coded from blue at the N-terminus to red at the C-terminus.
Four molecules of perampanel (pink)
are bound near the bottom, between the transmembrane domain and the
rest of the receptor. For image setup other than orientation,
see the command file ampar.cxc.
See also: Presets menu
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...