Hewitt R, Suit J C, Billen D
J Bacteriol. 1967 Jan;93(1):86-9. doi: 10.1128/jb.93.1.86-89.1967.
Several thymineless Escherichia coli strains have been examined for their ability to replicate their deoxyribonucleic acid when bromouracil is substituted for thymine. The procedure we describe was used to identify a thymineless strain with characteristics relatively favorable to its use in bromouracil labeling experiments. In addition, mutants with an "absolute" thymine requirement could be easily distinguished from one with a "leaky" thymine requirement.
已对几种无胸腺嘧啶的大肠杆菌菌株进行了检测,以研究当用溴尿嘧啶替代胸腺嘧啶时它们复制脱氧核糖核酸的能力。我们所描述的程序用于鉴定一种无胸腺嘧啶菌株,其特性相对有利于在溴尿嘧啶标记实验中使用。此外,对胸腺嘧啶有“绝对”需求的突变体可以很容易地与对胸腺嘧啶有“渗漏”需求的突变体区分开来。