Suppr超能文献

嗜氯鞘氨醇单胞菌(黄杆菌属)ATCC 39723中pcpA的突变分析及其在五氯苯酚降解中的作用

Mutational analysis of pcpA and its role in pentachlorophenol degradation by Sphingomonas (Flavobacterium) chlorophenolica ATCC 39723.

作者信息

Chanama S, Crawford R L

机构信息

University of Idaho Institute for Molecular and Agricultural Genetic Engineering, Moscow 83844-1052, USA.

出版信息

Appl Environ Microbiol. 1997 Dec;63(12):4833-8. doi: 10.1128/aem.63.12.4833-4838.1997.

Abstract

Sphingomonas (Flavobacterium) chlorophenolica ATCC 39723 degrades pentachlorophenol (PCP) through a catabolic pathway encoded by multiple genes. One gene required for PCP degradation is pcpA, which encodes information for a 30-kDa polypeptide, PcpA, found in the periplasm of the bacterium. The biological role of PcpA has remained unknown. We disrupted pcpA by replacing it with a defective copy through homologous recombination. The pcpA recombinant, mutant strains accumulated 2,6-dichlorohydroquinone (2,6-DiCH) as a metabolite of PCP. This work confirms that pcpA is essential for degradation of PCP by S. chlorophenolica ATCC 39723 and suggests that it encodes a protein involved in hydrolytic dehalogenation of 2,6-DiCH, an already established primary metabolite of the PCP catabolic pathway.

摘要

嗜麦芽寡养单胞菌(黄杆菌属)嗜氯酚亚种ATCC 39723通过多个基因编码的分解代谢途径降解五氯酚(PCP)。PCP降解所需的一个基因是pcpA,它编码一种30 kDa多肽PcpA的信息,该多肽存在于细菌的周质中。PcpA的生物学作用尚不清楚。我们通过同源重组用一个缺陷拷贝替换pcpA,从而破坏了pcpA。pcpA重组突变菌株积累了2,6-二氯对苯二酚(2,6-DiCH)作为PCP的代谢产物。这项工作证实了pcpA对嗜麦芽寡养单胞菌ATCC 39723降解PCP至关重要,并表明它编码一种参与2,6-DiCH水解脱卤的蛋白质,2,6-DiCH是PCP分解代谢途径中已确定的主要代谢产物。

相似文献

7
Molecular analysis of pentachlorophenol degradation.五氯苯酚降解的分子分析
Biodegradation. 1994 Dec;5(3-4):277-88. doi: 10.1007/BF00696465.

本文引用的文献

5
Catabolism of pentachlorophenol by a Flavobacterium sp.黄杆菌属细菌对五氯苯酚的分解代谢
Biochem Biophys Res Commun. 1986 Dec 15;141(2):825-30. doi: 10.1016/s0006-291x(86)80247-9.

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验