Guanylyl transferase CofC like
Coenzyme F420 is a hydride carrier cofactor that functions during methanogenesis. This family of proteins represents CofC, a nucleotidyl transferase that is involved in coenzyme F420 biosynthesis. CofC has been shown to catalyze the formation of lactyl-2-diphospho-5'-guanosine from 2-phospho-L-lactate and GTP.