[大肠杆菌K-12染色体上phoA和lacZ基因区域的重复]
[Duplication in the region of the phoA and lacZ genes on the Escherichia coli K-12 chromosome].
作者信息
Kulakauskas S T, Mitkaĭte G V, Khmeliauskaĭte V G
出版信息
Genetika. 1990 Nov;26(11):1926-31.
PMID:2074007
Abstract
Transduction of genetic markers phoA1::Tn5 and lacZ::Tn10 was used to show the high frequency of occurrence of duplication (5-8%) carrying the above mentioned genes without application of selection for the increase of their function. Genetic tests were used to show that duplicated segments vary in size and in some cases comprise the whole lacZ-phoA region of Escherichia coli K-12 chromosome.
摘要
利用遗传标记phoA1::Tn5和lacZ::Tn10的转导来显示在未对其功能增强进行选择的情况下携带上述基因的重复（5-8%）的高发生率。通过遗传测试表明，重复片段大小各异，在某些情况下包含大肠杆菌K-12染色体的整个lacZ-phoA区域。
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