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Alternate Location Identifiers

With respect to PDB alternate location identifiers, an atom with two or more alternate locations read from a PDB file in PyMOL is treated as two or more independent atoms. Both atoms are a member of the associated residue and thus there will be extra (nonphysical) bonds present.

The easiest way to eliminate alterate conformations is to issue:

remove not alt ''+A
alter all, alt=''

which will remove the alternate conformations and clear the alternate location identifiers.

concept/alt.txt · Last modified: 2013/08/19 21:00 (external edit)