Hailes A M, Bruce N C
Institute of Biotechnology, University of Cambridge, United Kingdom.
Appl Environ Microbiol. 1993 Jul;59(7):2166-70. doi: 10.1128/aem.59.7.2166-2170.1993.
The morphine alkaloid hydromorphone (dihydromorphinone) was identified as an intermediary metabolite in the degradation of morphine by Pseudomonas putida M10. A constitutive NADH-dependent morphinone reductase capable of catalyzing the reduction of the 7,8-unsaturated bond of morphinone and codeinone, yielding hydromorphone and hydrocodone, respectively, was shown to be present in cell extracts. The structures have been identified by 1H nuclear magnetic resonance and mass spectrometry. Morphinone reductase has been partially purified by anion-exchange and gel filtration chromatography. This enzyme has potential applications as a biocatalyst for the synthesis of the highly potent analgesic hydromorphone and the antitussive hydrocodone.
吗啡生物碱氢吗啡酮(二氢吗啡酮)被鉴定为恶臭假单胞菌M10降解吗啡过程中的一种中间代谢产物。细胞提取物中存在一种组成型的依赖烟酰胺腺嘌呤二核苷酸(NADH)的吗啡酮还原酶,它能够催化吗啡酮和可待因酮的7,8-不饱和键的还原反应,分别生成氢吗啡酮和氢可酮。其结构已通过氢核磁共振(1H NMR)和质谱分析得以鉴定。吗啡酮还原酶已通过阴离子交换和凝胶过滤色谱法进行了部分纯化。这种酶作为生物催化剂在合成高效镇痛药氢吗啡酮和镇咳药氢可酮方面具有潜在应用价值。