Title: Antibiotic compositions and methods from micromonospora purpurea JI-20

Abstract: A mutant strain of Micromonospora purpurea herein designated M. purpurea JI-20 elaborates an antibiotic complex comprising gentamicin and at least two novel antibiotic substances namely Antibiotic JI-20A and Antibiotic JI-20B. The so-produced antibiotics have an adverse effect upon the growth of gram-positive and gram-negative bacteria.

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Inventors: Ilavsky, Jan (Livingston, NJ, US)
Bayan, Aris P. (New Brunswick, NJ, US)
Charney, William (Montclair, NJ, US)
Reimann, Hans (Wayne, NJ, US)

Application Number: 584791
Filing Date: 1975-06-09
Publication_date: 1977-02-22
Assignee: Schering Corporation (Kenilworth, NJ)
Primary Class(es): 514/40 424/114
Other Classes:
US Patent Ref:

3651042	Mar, 1972	Marquez et al.	260/210.
3661892	May, 1972	Shomura et al.	260/210.

Other Refs:
Primary Examiner: Turner, V. D.
Assistant Examiner:
Attorney: Joyner; Carver C., Coan; Stephen B., McDonald; Raymond