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3-脱氧-D-阿拉伯庚酮糖酸-7-磷酸合酶的一对调节同工酶在第一类假单胞菌中保守存在。

A pair of regulatory isozymes for 3-deoxy-D-arabino-heptulosonate 7-phosphate synthase is conserved within group I pseudomonads.

作者信息

Byng G S, Berry A, Jensen R A

出版信息

J Bacteriol. 1983 Oct;156(1):429-33. doi: 10.1128/jb.156.1.429-433.1983.

Abstract

Two closely related subgroups of group I pseudomonads, which differ from one another in the overall enzymatic makeup of aromatic amino acid biosynthesis, possess in common the recently characterized major (tyrosine-sensitive) and minor (tryptophan-sensitive) isozymes of 3-deoxy-D-arabino-heptulosonate 7-phosphate synthase of Pseudomonas aeruginosa (17). Since these characterizations were made for strains whose phylogenetic positions have been determined by oligonucleotide cataloging, an initial perception of the evolution of aromatic pathway construction and regulation is emerging.

摘要

I群假单胞菌的两个密切相关的亚群,在芳香族氨基酸生物合成的整体酶组成上彼此不同,但它们共同拥有最近鉴定出的铜绿假单胞菌3-脱氧-D-阿拉伯庚酮糖酸7-磷酸合酶的主要(酪氨酸敏感)和次要(色氨酸敏感)同工酶(17)。由于这些鉴定是针对其系统发育位置已通过寡核苷酸编目确定的菌株进行的,因此对芳香族途径构建和调控的进化的初步认识正在形成。

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