Geosmin Biosynthesis. <i>Streptomyces coelicolor </i>Germacradienol/Germacrene D Synthase Converts Farnesyl Diphosphate to Geosmin
作者:Jiaoyang Jiang、Xiaofei He、David E. Cane
DOI:10.1021/ja062669x
日期:2006.6.1
diphosphate (2, FPP) in the presence of Mg2+ gave a mixture of (4S,7R)-germacra-1(10)E,5E-diene-11-ol (3) (74%), (-)-(7S)-germacrene D (4) (10%), geosmin (1) (13%), and a hydrocarbon, tentatively assigned the structure of octalin 5 (3%). Individual incubations of recombinant germacradienol synthase with [1,1-2H2]FPP (2a), (1R)-[1-2H]-FPP (2b), and (1S)-[1-2H]-FPP (2c), as well as with FPP (2) in D2O, and
土臭素是造成潮湿土壤特有气味的原因。由革兰氏阳性土壤细菌天蓝色链霉菌的 SCO6073 (SC9B1.20) 基因编码的重组germacradienol 合酶与法呢基二磷酸 (2, FPP) 在 Mg2+ 存在下孵育,得到 (4S,7R)-germacra 的混合物-1(10)E,5E-diene-11-ol (3) (74%), (-)-(7S)-germacrene D (4) (10%), geosmin (1) (13%), 和一种碳氢化合物,暂定为八烷 5 (3%) 的结构。[1,1-2H2]FPP (2a)、(1R)-[1-2H]-FPP (2b) 和 (1S)-[1-2H]-FPP (2c) 与重组细菌二烯醇合酶的单独孵育,以及 D2O 中的 FPP (2),