ID 2.5.1.38 DE isonocardicin synthase. CA nocardicin G + S-adenosyl-L-methionine = H(+) + isonocardicin C + CA S-methyl-5'-thioadenosine. CC -!- The enzyme, characterized from the bacterium Nocardia uniformis, CC is involved in the biosynthesis of the beta-lactam antibiotic CC nocardicin A. CC -!- The enzyme can act on nocardicin E, F, and G, producing isonocardicin CC A, B, and C, respectively. CC -!- However, the in vivo substrate is believed to be nocardicin G. DR Q9RAH6, NAT_NOCUT ; //