Heterologous expression of the biosynthetic gene cluster in Streptomyces lividans TK23 led to the production of a novel polyene compound, JBIR-159. We report herein the biosynthetic gene cluster for JBIR-159, and the heterologous expression, isolation, structure determination and a brief biological ...
百度试题 题目JB/T4730-2005中规定采用Ir-192源透照钢、不锈钢等时,AB级的透照厚度范围为() A. 10～40mm B. 14～40mm C. 20～100mm D. 20～90mm 相关知识点: 试题来源: 解析 C.20～100mm