Binds pyridoxal 5′-phosphate. Catalyses a step in the biosynthesis of the side chain of the aminoglycoside antibiotics of the butirosin family. Has very low activity with substrates not bound to an acyl-carrier protein.
Li, Y., Llewellyn, N.M., Giri, R., Huang, F. and Spencer, J.B. Biosynthesis of the unique amino acid side chain of butirosin: possible protective-group chemistry in an acyl carrier protein-mediated pathway. Chem. Biol.12 (2005) 665–675. [PMID: 15975512]