STUDIES ON ACTINOMYCETALES PRODUCING ANTIBIOTICS ONLY ON AGAR CULTURE .2. ISOLATION, STRUCTURE AND BIOLOGICAL PROPERTIES OF N-CARBAMOYL-D-GLUCOSAMINE (SUBSTANCE SF-1993)

N-Carbamoyl-d-glucosamine was isolated from the culture of Streptomyces halstedii SF-1993. It showed weak antimicrobial activity against some Gram-negative bacteria and some fungi. As described in the preceding paper15, Streptomyces halstedii SF-1993 was isolated by screening, in which strains producing antibiotics on agar culture but not in shaken culture were selected. Taxonomy and morphology-productivity relationships of the strain SF-1993 were the subjects of the previous paper. This paper deals with the isolation, characterization and structure of the antibiotic produced by the strain SF-1993. © 1979, JAPAN ANTIBIOTICS RESEARCH ASSOCIATION. All rights reserved.