create_forcefields.readme

#source leaprc.protein.ff14SB
source leaprc.protein.ff19SB
mol = sequence { ACE ALA NME }
saveamberparm mol ala2nw.prmtop ala2nw.crd
savepdb mol ala2.pdb 

#chignolin
#source leaprc.protein.ff19SB 2019 does not work
source leaprc.protein.ff14SB
source leaprc.water.tip3p
set default PBradii mbondi3
#chig = sequence { GLY TYR ASP PRO GLU THR GLY THR TRP GLY }
chig = loadpdb chignolin_folded.pdb
savepdb chig chignolin_ext.pdb
#saveamberparm chig chig_ext.parm7 chig_ext.crd
saveamberparm chig chig_ext.prmtop chig_ext.crd