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恶臭假单胞菌OUS82中编码菲和萘利用上游途径的染色体基因簇pah的克隆与特性分析。

Cloning and characterization of a chromosomal gene cluster, pah, that encodes the upper pathway for phenanthrene and naphthalene utilization by Pseudomonas putida OUS82.

作者信息

Kiyohara H, Torigoe S, Kaida N, Asaki T, Iida T, Hayashi H, Takizawa N

机构信息

Department of Applied Chemistry, Faculty of Engineering, Okayama University of Science, Japan.

出版信息

J Bacteriol. 1994 Apr;176(8):2439-43. doi: 10.1128/jb.176.8.2439-2443.1994.

Abstract

A 25-kb DNA SalI fragment cloned from the chromosomal DNA of Pseudomonas putida OUS82, which utilizes phenanthrene (Phn+) and naphthalene (Nah+), carried all of the genes necessary for upper naphthalene catabolism. Cosmid recombinant pIP7 complemented both the Nah- and Phn- defects of OUS8211 (Trp-Nah-Phn-Sal+[salicylate utilizing]Hna+[1-hydroxy-2-naphthoate utilizing]) and only the Phn- defect of OUS8212 (Trp-Nah-Phn-Sal-Hna+). The results indicate that strain OUS82 uses different pathways after o-hydroxycarboxylic aromatics in the catabolism of naphthalene and phenanthrene.

摘要

从恶臭假单胞菌OUS82染色体DNA中克隆出的一个25 kb的DNA SalI片段,该菌株能利用菲(Phn+)和萘(Nah+),它携带了萘上半部分分解代谢所需的所有基因。黏粒重组体pIP7弥补了OUS8211(色氨酸营养缺陷型、萘利用缺陷型、菲利用缺陷型、水杨酸盐利用型[Sal+]、1-羟基-2-萘甲酸盐利用型[Hna+])的Nah-和Phn-缺陷,以及OUS8212(色氨酸营养缺陷型、萘利用缺陷型、菲利用缺陷型、水杨酸盐利用缺陷型、1-羟基-2-萘甲酸盐利用型)的仅Phn-缺陷。结果表明,菌株OUS82在萘和菲的分解代谢中,在邻羟基羧酸芳烃之后使用不同的途径。

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