charmm and dihedral multiplicity

From: mdcooper (
Date: Thu Dec 16 2004 - 13:19:02 CST

Hello all,

I am confused about dihedral multiplicity.

It seems to be that the multiplicity value indicates that a number of
identical dihedrals exist and this is a time saving measure:

<<If the PSF file originates from X-PLOR, consecutive multiple entries for the
same dihedral (indicating the dihedral multiplicity for X-PLOR) will be
ignored. >>

How does this possibly work? Can anyone help? If the different dihedrals move
differently then this convention would not work.



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