Hello,<div>my name is Giulia Gonnelli and i'm a new user of the software Gromacs. I'm performing an energy minimmization of several proteins containig biological cofactors.</div><div>I have problems with the cofactor FAD which has not been parametrized yet on the gromos forcefields. I was wondering how to add new parameters fon unrecognised molecules in Gromacs. I found in literature that actually there are some parameters for the FAD cofactor but i don't know how and where do i have to add these parameters. I'm not used to use gromacs so i apologyze for my simple question...and my english too.Thanks.</div>
<div>Regards,</div><div><br></div><div>Giulia Gonnelli</div>