Okamura K, Hirata S, Koki A, Hori K, Shibamoto N, Okumura Y, Okabe M, Okamoto R, Kouno K, Fukagawa Y, Shimauchi Y, Ishikura T, Lein J
J Antibiot (Tokyo). 1979 Apr;32(4):262-71. doi: 10.7164/antibiotics.32.262.
Antibiotic PS-5 is a new beta-lactam antibiotic isolated from fermentation broths of Streptomyces sp. strain A271. The strain was considered to be a new subspecies of Streptomyces cremeus and the name, Streptomyces cremeus subsp. auratilis, was proposed. Fermentative production, isolation and physico-chemical properties of PS-5 are described.