Suppr超能文献

大肠杆菌pabB的核苷酸序列表明对氨基苯甲酸合成酶和邻氨基苯甲酸合成酶有共同的进化起源。

Nucleotide sequence of Escherichia coli pabB indicates a common evolutionary origin of p-aminobenzoate synthetase and anthranilate synthetase.

作者信息

Goncharoff P, Nichols B P

出版信息

J Bacteriol. 1984 Jul;159(1):57-62. doi: 10.1128/jb.159.1.57-62.1984.

Abstract

Biochemical and immunological experiments have suggested that the Escherichia coli enzyme p-aminobenzoate synthetase and anthranilate synthetase are structurally related. Both enzymes are composed of two nonidentical subunits. Anthranilate synthetase is composed of proteins encoded by the genes trp(G)D and trpE, whereas p-aminobenzoate synthetase is composed of proteins encoded by pabA and pabB. These two enzymes catalyze similar reactions and produce similar products. The nucleotide sequences of pabA and trp(G)D have been determined and indicate a common evolutionary origin of these two genes. Here we present the nucleotide sequence of pabB and compare it with that of trpE. Similarities are 26% at the amino acid level and 40% at the nucleotide level. We propose that pabB and trpE arose from a common ancestor and hence that there is a common ancestry of genes encoding p-aminobenzoate synthetase and anthranilate synthetase.

摘要

生化和免疫学实验表明,大肠杆菌中的对氨基苯甲酸合成酶和邻氨基苯甲酸合成酶在结构上相关。这两种酶均由两个不同的亚基组成。邻氨基苯甲酸合成酶由trp(G)D和trpE基因编码的蛋白质组成,而对氨基苯甲酸合成酶由pabA和pabB基因编码的蛋白质组成。这两种酶催化相似的反应并产生相似的产物。pabA和trp(G)D的核苷酸序列已被确定,表明这两个基因有共同的进化起源。在此,我们给出pabB的核苷酸序列,并将其与trpE的核苷酸序列进行比较。氨基酸水平的相似度为26%,核苷酸水平的相似度为40%。我们提出,pabB和trpE起源于一个共同的祖先,因此,编码对氨基苯甲酸合成酶和邻氨基苯甲酸合成酶的基因有共同的祖先。

相似文献

引用本文的文献

本文引用的文献

10
A system for shotgun DNA sequencing.一种用于鸟枪法DNA测序的系统。
Nucleic Acids Res. 1981 Jan 24;9(2):309-21. doi: 10.1093/nar/9.2.309.

文献检索

告别复杂PubMed语法,用中文像聊天一样搜索,搜遍4000万医学文献。AI智能推荐,让科研检索更轻松。

立即免费搜索

文件翻译

保留排版,准确专业,支持PDF/Word/PPT等文件格式,支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述,25分钟生成高质量综述,智能提取关键信息,辅助科研写作。

立即免费体验