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大肠杆菌K-12中serC基因(磷酸羟基丙酮酸转氨酶基因)与serS基因(丝氨酰转运核糖核酸合成酶基因)的紧密连锁。

Close linkage of the genes serC (for phosphohydroxy pyruvate transaminase) and serS (for seryl-transfer ribonucleic acid synthetase) in Escherichia coli K-12.

作者信息

Clarke S J, Low B, Konigsberg W H

出版信息

J Bacteriol. 1973 Mar;113(3):1091-5. doi: 10.1128/jb.113.3.1091-1095.1973.

Abstract

Escherichia coli strain K28, isolated after nitrosoguanidine mutagenesis, was found to be auxotrophic for serine. It was also temperature sensitive for growth as a result of producing an altered seryl-transfer ribonucleic acid (tRNA) synthetase (EC 6.1.1.11, l-serine: tRNA ligase [AMP]). The auxotrophy was caused by a mutation in the structural gene for phosphohydroxy-pyruvate transaminase (serC), which was distinct from, but closely linked to, the structural gene for seryl-tRNA synthetase (serS). We conclude that the relevant genes are in the order gal-serS-serC-aroA.

摘要

在经亚硝基胍诱变后分离得到的大肠杆菌K28菌株,被发现对丝氨酸营养缺陷。由于产生了一种改变的丝氨酰 - 转移核糖核酸(tRNA)合成酶(EC 6.1.1.11,L - 丝氨酸:tRNA连接酶[AMP]),它对生长也是温度敏感的。这种营养缺陷是由磷酸羟基丙酮酸转氨酶(serC)的结构基因突变引起的,该基因与丝氨酰 - tRNA合成酶(serS)的结构基因不同,但紧密连锁。我们得出结论,相关基因的顺序为gal - serS - serC - aroA。

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