MSMS (Molecular Surface) Model Attributes
Once a model has been chosen in the left
side of the Model Panel, clicking
the attributes... button in the right side of the panel brings up
a window that lists model attributes and allows them to be changed.
Molecular surface models are of class MSMSModel and
can be generated using the Surface section of the
Actions menu or
the command surface.
The list includes the attributes of the
molecular surface model
and selected attributes of its component
- active - whether the model is
activated for motion
- color source - whether the surface color reflects
the color at the model or atom level
(see coloring hierarchy). When surface
color is set independent of these levels, unknown is reported.
This occurs when the surface is custom-colored, for example,
when it is colored by electrostatic potential using
- displayed - whether surface
display is enabled at the model level
(see display hierarchy)
- dot size - pixel size of dots used in the dot
- line width - pixel width of lines used in the mesh
- probe radius - radius in angstroms of the probe sphere
used to compute the surface. A larger probe decreases surface bumpiness
because it fits into fewer crevices.
A probe radius of 1.4 angstroms is commonly used to approximate
the size of a water molecule.
- representation - which type of
is being used
- vertex density - number of vertices per
square angstrom used to compute the surface.
Greater density results in a smoother surface but
increases computational demands for calculating and moving the surface.
Attributes of individual atom surfaces within a molecular surface model
can be set independently. When different per-atom surfaces within the
molecular surface model have different attribute values, the value is
reported to be -- multiple --.
If one of the other options is chosen, all per-atom surfaces
in the molecular surface model will be changed accordingly.
Molecule Model Attributes
- surface color (a color well)
- atom-level surface color; see
- surface displayed - whether surface
display is enabled at the atom level
(see display hierarchy)
- -- multiple --
- surface opacity - atom-level surface opacity, ranging from
0 (completely transparent) to 1 (completely opaque); a negative value
indicates that the opacity included in the definition of the atom-level
surface color(s) should be used instead
VRML, Volume, and
Surface Model Attributes