share/top/charmm27.ff/aminoacids.r2b

   1 ; rtp residue to rtp building block table
   2 ;GMX   Force-field
   3 HISD    HSD
   4 HISE    HSE
   5 HISH    HSP
   6 LYSN    LSN
   7 ASPH    ASPP
   8 GLUH    GLUP
   9 HEM     HEME