title: Actinoidin A2, a novel glycopeptide: production, preparative HPLC separation and characterization.
abstract: An unidentified Nocardia sp. (SK&F-AAJ-193) was isolated and found to produce actinoidin A and a novel analog which we have named actinoidin A2. This new glycopeptide antibiotic differs from actinoidin A by the presence of rhamnose instead of acosamine. This analog was isolated using Dianion HP-20 resin followed by a specific glycopeptide affinity column (Affigel-10-D-Ala-D-Ala). The purification was accomplished using preparative ion-pairing chromatography. Actinoidin A2 is active against Staphylococcus aureus and coagulase-negative Staphylococci although it is less potent than actinoidin A.
mesh_terms: D000818:Animals; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002845:Chromatography; D005285:Fermentation; D006094:Gram-Positive Bacteria / Q000187:drug effects; D051379:Mice; D008826:Microbial Sensitivity Tests; D009615:Nocardia / Q000032:analysis*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013211:Staphylococcus aureus / Q000187:drug effects; D014640:Vancomycin / Q000031:analogs & derivatives* / Q000096:biosynthesis / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: C012164:actinoidins; D014640:Vancomycin