Shearer M C, Giovenella A J, Grappel S F, Hedde R D, Mehta R J, Oh Y K, Pan C H, Pitkin D H, Nisbet L J
J Antibiot (Tokyo). 1986 Oct;39(10):1386-94. doi: 10.7164/antibiotics.39.1386.
A new subspecies of Kibdelosporangium aridum subsp. largum (SK&F AAD-609), was isolated and shown to produce novel glycopeptides related to aridicins, but containing a homologous series of glycolipids based on N-acylglucosamine. These compounds showed improvements over the aridicins in in vitro activity and were effective in mouse protection studies against a range of Gram-positive bacteria, including methicillin resistant staphylococci. Pharmacokinetic studies indicated that they have high serum concentrations and long-acting potential. The kibdelin complex modified rumen metabolism in a manner favorable for growth promotion.
