[gmx-users] Fatal error: atom C not found in buiding block 19NH2 while combining tdb and rtp

[ankita oindrila]

 i am stimulting an AMP protein in water.

this is the error i get on my first step..

pdb2gmx -f 1PG1_1.pdb -o 1PG1_1_processed.gro -water spce

error:

Fatal error: atom C not found in buiding block 19NH2 while combining
tdb and rtp

please HELP!!