New product identification in the sterol metabolism by an industrial strain Mycobacterium neoaurum NRRL B-3805
作者:Xuemei Li、Xi Chen、Yu Wang、Peiyuan Yao、Rui Zhang、Jinhui Feng、Qiaqing Wu、Dunming Zhu、Yanhe Ma
DOI:10.1016/j.steroids.2018.02.001
日期:2018.4
metabolizes sterols to produce androst‐4‐en‐3,17‐dione (AD) as the main product, and androsta‐1,4‐dien‐3,17‐dione, 9&agr;‐hydroxy androst‐4‐en‐3,17‐dione and 22‐hydroxy‐23,24‐bisnorchol‐4‐en‐3‐one have been identified as by‐products. In this study, a new by‐product was isolated from the metabolites of sterols and identified as methyl 3‐oxo‐23,24‐bisnorchol‐4‐en‐22‐oate (BNC methyl ester), which was proposed
&NA; 新金分枝杆菌 NRRL B-3805 代谢甾醇以产生雄激素-4-烯-3,17-二酮 (AD) 作为主要产物,和雄激素-1,4-二烯-3,17-二酮、9&agr;-羟基雄激素- 4-en-3,17-dione 和 22-hydroxy-23,24-bisnorchol-4-en-3-one 已被确定为副产物。在这项研究中,从甾醇的代谢物中分离出一种新的副产物,并鉴定为 3-oxo-23,24-bisnorchol-4-en-22-oate 甲酯(BNC 甲酯),建议通过使用 S-腺苷-L-甲硫氨酸作为甲基供体,由 O-甲基转移酶催化 BNC 的酯化。这些结果可能通过对菌株进行基因操作来消除这种副产物,从而为提高微生物 AD 生产效率开辟了一个新的维度。