Amiclenomycin Peptides - Isolation and Structure Elucidation of New Biotin Antimetabolites
作者:Armin Kern、Ursula Kabatek、Günther Jung、Rolf G. Werner、Matthias Poetsch、Hans Zähner
DOI:10.1002/jlac.198519850502
日期:1985.5.13
enzymatic cleavage with pronase P. All eight antibiotics inhibit the growth of gram-negative bacteria by blocking the biotin biosynthesis. A synergistic enhancement of the antibiotic action was found by a polypeptide L (9) also isolated from S. Venezuelae Tü 2460. Further screening1 revealed, that the S. Venezuelae strain Tü 2605 produces the antibiotic L-MeIle-L-Acm-L-Glu (10).
从委内链霉菌Tü2460的培养滤液中分离出六种肽抗生素。氨基酸阿米诺霉素(Acm,7)的4-氨基-2,5-环己二烯基环是三个二肽L-的基本结构元件。 MeIle-L-Acm(1,亲和素S 3),L-Ile-L-Acm(2)和L-MeVal-L-Acm(3,亲和素S 2)以及三个三肽L-MeIle-L -Acm-L-Gln(4),L-Ile-L-Acm-L-Gln(5)和L-Val-L-Acm-L-Gln(6)。此外,L-氨苄菌霉素(7)和L-Acm-L-Gln(8)链霉菌素P通过酶切获得。)所有八种抗生素均通过阻止生物素的生物合成来抑制革兰氏阴性细菌的生长。还从委内瑞拉葡萄球菌Tü2460中分离出的多肽L(9)发现了抗生素作用的协同增强。进一步的筛选1显示,委内瑞拉葡萄球菌Tü2605产生了抗生素L-MeIle-L-Acm-L-。谷氨酸(10)。