大肠杆菌K-12利用柠檬酸盐的染色体突变
Chromosomal mutation for citrate utilization by Escherichia coli K-12.
作者信息
Hall B G
出版信息
J Bacteriol. 1982 Jul;151(1):269-73. doi: 10.1128/jb.151.1.269-273.1982.
Abstract
A mutant strain of Escherichia coli K-12 that utilizes citrate as a sole source of carbon and energy was isolated. Citrate utilization arose as the consequence of two mutations in genes citA and citB, which are linked to the gal operon. The mutant strain expresses a semiconstitutive citrate transport system, and it utilizes both citrate and isocitrate as carbon and energy sources. It is capable of utilizing cis- and trans-aconitate, but only if it is preinduced by growth on citrate.
摘要
分离出了一种利用柠檬酸盐作为唯一碳源和能源的大肠杆菌K-12突变株。柠檬酸盐利用是由与半乳糖操纵子相连的citA和citB基因中的两个突变导致的。该突变株表达一种半组成型柠檬酸盐转运系统，并且它利用柠檬酸盐和异柠檬酸盐作为碳源和能源。它能够利用顺乌头酸和反乌头酸，但前提是它先在柠檬酸盐上生长进行预诱导。
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