BENASTATIN-A AND BENASTATIN-B, NEW INHIBITORS OF GLUTATHIONE-S-TRANSFERASE, PRODUCED BY STREPTOMYCES SP MI384-DF12 .1. TAXONOMY, PRODUCTION, ISOLATION, PHYSICOCHEMICAL PROPERTIES AND BIOLOGICAL-ACTIVITIES

被引:39
作者
AOYAGI, T [1 ]
AOYAMA, T [1 ]
KOJIMA, F [1 ]
MATSUDA, N [1 ]
MARUYAMA, M [1 ]
HAMADA, M [1 ]
TAKEUCHI, T [1 ]
机构
[1] SHOWA COLL PHARMACEUT SCI, MACHIDA, TOKYO 194, JAPAN
关键词
D O I
10.7164/antibiotics.45.1385
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Benastatins have been isolated as part of a program designed to find microorganism-produced inhibitors of glutathione S-transferase from Streptomyces sp. MI384-DF12. They were purified by chromatography of reversed-phase silica gel, silica gel and Capcell Pak C18 (HPLC) followed by solvent extraction and then isolated as yellow powders. Benastatins A and B have the molecular formulae, C30H28O7 and C30H30O7, respectively. They were competitive with 3,4-dichloronitrobenzene as the substrate, and the inhibition constants (Ki) of benastatins A and B were 5.0 x 10(-6) and 3.7 x 10(-6), respectively.
引用
收藏
页码:1385 / 1390
页数:6
相关论文
共 7 条