在植物硝酸还原酶存在下的 PCB 脱氯。

Dechlorination of PCB in the presence of plant nitrate reductase.

机构信息

Molecular Genetics Laboratory, Department of Biology, Howard University, 415 College Street, NW, Washington, DC 20059, USA.

出版信息

Environ Toxicol Pharmacol. 2008 Mar;25(2):144-7. doi: 10.1016/j.etap.2007.10.009. Epub 2007 Oct 13.

DOI:10.1016/j.etap.2007.10.009

PMID:21783850

Abstract

The dechlorination of PCB, specifically the noncoplanar congener PCB 153, has been observed in the presence of a crude nitrate reductase extract from Medicago sativa leaves. These observations were further confirmed using a commercially available and pure nitrate reductase from Zea mays. The presence of nitrate reductase increased PCB 153 dechlorination. Then, the addition of molybdenum, the enzyme's cofactor, enhanced dechlorination of the environmental contaminant. The ability of plant nitrate reductase to dechlorinate PCB is a new observation.

摘要

在来自紫花苜蓿叶片的粗制硝酸还原酶提取物存在的情况下，观察到 PCB（多氯联苯）的脱氯，特别是非共平面同系物 PCB 153。使用来自玉米的市售和纯硝酸还原酶进一步证实了这些观察结果。硝酸还原酶的存在增加了 PCB 153 的脱氯。然后，添加钼，即酶的辅因子，增强了环境污染物的脱氯。植物硝酸还原酶脱除 PCB 的能力是一个新的观察结果。