ID 2.3.2.19 DE ribostamycin:4-(gamma-L-glutamylamino)-(S)-2-hydroxybutanoyl-[BtrI acyl- DE carrier protein] 4-(gamma-L-glutamylamino)-(S)-2-hydroxybutanoate DE transferase. CA 4-(gamma-L-glutamylamino)-(2S)-2-hydroxybutanoyl-[BtrI ACP] + CA ribostamycin = gamma-L-glutamyl-butirosin B + H(+) + holo-[BtrI ACP]. CC -!- The enzyme attaches the side chain of the aminoglycoside antibiotics CC of the butirosin family. CC -!- The side chain confers resistance against several aminoglycoside- CC modifying enzymes. DR Q4H4E9, BTRH_NIACI ; //