How do I select a pymol subunit by name?

Question

I'm working with 5IVW downloaded from PDB. This has 5 subunits; each has it's own residue numbering--if I color residues 1-100, 5 sets of residues get colored. If I select atoms with the mouse I see the identification of the subunit: e.g. 5IVW/B/... ; i.e. I've selected atoms in subunit B. But how do I select the subunit, or anything in pymol, by its internal name--so I can just color the residues in subunit B? The documentation has extensive information on selecting by atom, element, residue, etc.

Answer 1

Have a look in the Macromolecules section at 5IVW. Here, the six chains (or subunits) in the structure are named V, W, 0, 1, 2, and 3. so your syntax to make a selection called "subunit2" should be:

select subunit2, chain W

note that in /5ivw/B, the B stands for segi-identifier and not the chain or subunit.