No abstract

No abstract

No abstract

No abstract

In the course of screening new antibiotics from soil microorganisms, we have isolated GERI-155 as a new naturally occurring antibiotic. GERI-155 shows antimicrobial activities against Gram-positive bacteria. In addition, two known compounds, chalcomycin1?2) and aldgamycin E3'4), were also detected in the same culture broth. This communication describes the isolation, physico-chemical properties, structure and antibacterial activity of GERI-155 (Fig. 1). The producing organism, Streptomyces sp. GERI-1 55, was isolated from a soil sample collected in Cheolwongun, Kangwon-do, Korea, and deposited at the Korea