Substrate Specificity of Regiospecific Desaturation of Aliphatic Compounds by a Mutant<i>Rhodococcus</i>Strain
作者:Kenzo KOIKE、Mikio TAKAIWA、Yoshiharu KIMURA、Shigeo INOUE、Susumu ITO
DOI:10.1271/bbb.64.1064
日期:2000.1
Substrate specificity of cis-desaturation of alipahtic compounds by resting cells of a mutant, Rhodococcus sp. strain KSM-MT66, was examined. Among substrates tested, the rhodococcal cells were able to convert n-alkanes (C13-C19), 1-chloroalkanes (C16 and C18), ethyl fatty acids (C14-C17) and alkyl (C1-C4) esters of palmitic acid to their corresponding unsaturated products of cis configuration. The products from n-alkanes and 1-chloroalkanes had a double bond mainly at the 9th carbon from their terminal methyl groups, and the products from acyl fatty acids had a double bond mainly at the 6th carbon from their carbonyl carbons.
对突变株Rhodococcus sp. KSM-MT66的休眠细胞进行的研究显示,脂肪化合物的顺式去饱和基质特异性得到了考察。在测试的基质中,罗多古菌细胞能够将n-烷烃(C13-C19)、1-氯烷烃(C16和C18)、乙基脂肪酸(C14-C17)和棕榈酸的烷基(C1-C4)酯转化为对应的顺式不饱和产物。来自n-烷烃和1-氯烷烃的产物主要在其末端甲基的第9个碳处形成双键,而来自酰基脂肪酸的产物主要在其羰基碳的第6个碳处形成双键。