Althiomycin is a polyketide synthase-derived thiazole antibiotic originally isolated from S. althioticus.1 It is active against Gram-positive bacteria, including S. aureus, S. epidermidis, and S. pyogenes (MICs = 25, 25, and 3.1 µg/ml, respectively).2 Althiomycin inhibits protein synthesis in E. coli when used at concentrations of 1 and 10 µg/ml but not in isolated rabbit reticulocytes at 100 µg/ml.3
1.Gerc, A.J., Song, L., Challis, G.L., et al.The insect pathogen Serratia marcescens Db10 uses a hybrid non-ribosomal peptide synthetase-polyketide synthase to produce the antibiotic althiomycinPLoS One7(9)e44673(2012) 2.Inami, K., and Shiba, T.Syntheses of althiomycin analogs in relation to antibacterial activitiesBull. Chem. Soc. Jpn.59(7)2185-2189(1986) 3.Fujimoto, H., Kinoshita, T., Suzuki, H., et al.Studies on the mode of action of althiomycinJ. Antibiot. (Tokyo)23(6)271-275(1970)