X-PLOR expects the following dimensions and units in
all input files: Å for
distances; kcal mole
for energy; psec for time, except
for some specifications in the NMR relaxation statement, where
it is in sec; amu
(atomic mass units) for masses; K for temperature; and
degrees for all angles, except
for the specification of certain energy constants, which refer
to kcal mole
rad
.