Ignore case chain

The ignore_case_chain setting (default: off) controls whether the chain and segi selection operators are case sensitive. The default is to be case sensitive, so "chain A" is different from "chain a".

New In PyMOL 1.8.2 (see ignore_case for previous versions)

Example

The PDB structure 3tcx has 28 chains, including "A" and "a".

PyMOL>fetch 3tcx, async=0
PyMOL>count_atoms chain A
 count_atoms: 641 atoms
PyMOL>set ignore_case_chain, on
PyMOL>count_atoms chain A
 count_atoms: 1282 atoms

See Also

• ignore_case
• Selection Algebra