parm resultPO4-nocount5.prmtop
setOverwrite True
change AMBER_ATOM_TYPE @2,3,4,5 o-
addLJType @%o-
add12_6_4 @%o-,Ca2+ c4file c4.txt polfile pol_addc4_phosphate.dat
outparm resultPO4-nocount5_addc4.prmtop
printLJMatrix :1-2
