E. Selva et al., ANTIBIOTICS A21459-A AND A21459-B, NEW INHIBITORS OF BACTERIAL PROTEIN-SYNTHESIS .1. TAXONOMY, ISOLATION AND CHARACTERIZATION, Journal of antibiotics, 49(2), 1996, pp. 145-149
Novel cyclic peptide antibiotics A21459 A and B are produced by a memb
er of the genus Actinoplanes sp. These antibiotics inhibit bacterial p
rotein synthesis and have selective antimicrobial activity against clo
stridia, mycoplasma and some Gram-negative bacteria.