A Glutathione
<i>S</i>
-Transferase with Activity towards
<i>cis</i>
-1,2-Dichloroepoxyethane Is Involved in Isoprene Utilization by
<i>Rhodococcus</i>
sp. Strain AD45
作者:Johan E. T. van Hylckama Vlieg、Jaap Kingma、Arjan J. van den Wijngaard、Dick B. Janssen
DOI:10.1128/aem.64.8.2800-2805.1998
日期:1998.8
Rhodococcus sp. strain AD45 was isolated from an enrichment culture on isoprene (2-methyl-1,3-butadiene). Isoprene-grown cells of strain AD45 oxidized isoprene to 3,4-epoxy-3-methyl-1-butene, cis-1, 2-dichloroethene to cis-1,2-dichloroepoxyethane, and trans-1, 2-dichloroethene to trans-1,2-dichloroepoxyethane. Isoprene-grown cells also degraded cis-1,2-dichloroepoxyethane and trans-1, 2-dichloroepoxyethane
红球菌 从异戊二烯(2-甲基-1,3-丁二烯)的富集培养物中分离出AD45菌株。异戊二烯生长的菌株AD45的细胞将异戊二烯氧化为3,4-环氧-3-甲基-1-丁烯,顺式1、2-二氯乙烯为顺式1,2-二氯环氧乙烷,反式1,2-二氯乙烯为反式-1,2-二氯环氧乙烷。异戊二烯生长的细胞还降解了顺式1,2-二氯环氧乙烷和反式1,2-二氯环氧乙烷。在顺式1,2-二氯环氧乙烷降解过程中,所有有机氯均以氯的形式释放出来。在生长于其上的培养物的细胞提取物中检测到谷胱甘肽(GSH)对3,4-环氧-3-甲基-1-丁烯,环氧丙烷,顺式1,2-二氯环氧乙烷和反式1,2-二氯环氧乙烷的活性异戊二烯和3,4-环氧-3-甲基-1-丁烯。细胞与1孵育后,AD45菌株的环氧化物降解活性不可逆转地丧失。2-环氧己烷。在暴露于1,2-环氧己烷的细胞的细胞提取物中检测到GSH和1,2-环氧乙烷的结合物,表明GSH是环氧转化活性的生理辅助因子。结果表明,GSH