[gmx-users] OPLSAA parameters

[friendli]

Dear all,

To understand the exact parameters used in oplsaa force field, I read 
the ffoplsaa*.*** files.
But I can not find all the corresponding atom types in the ffoplsaa.rtp 
and ffoplsaabon.itp files.

for example, in rtp file, there is a bond between atom type CG and OG1. 
But in *bon.itp, there is no such atom types CG or OG1 in the 
[bondtypes]. where is the bond constants etc kept? and how Gromacs find 
them?

Can anybody give a hint for this?


thanks in advance

Qiang