How is charge group defined in gromos force field when adding new residue to .rtp file? Is there a gromos bond type for the bond between C and OE ?

I am trying to run MD for fluorescein, a small molecular weight green dye. I need to add a new residue (which exists in pdb file that I created by deleting the rest of the molecule and leaving...

06 March 2015 6,868 2 View