Phosphoenolpyruvate (PEP) mutase catalyses the conversion of PEP to 3-phosphonopyruvate which is the P-C bond forming step of the biosynthetic pathways leading to phosphonate natural products. Phosphonates are secondary metabolites, some of which have antibiotic activity. The structure of the enzyme is that of a modified alpha-beta barrel with only 7 beta sheets in the core of the barrel.
Defined by 12 residues: SER:A-46GLY:A-47LEU:A-48ASP:A-58ASP:A-85ASP:A-87GLU:A-114LYS:A-120ASN:A-122SER:A-123ARG:A-159HIS:A-190