IDENTIFICATION AND DNA-SEQUENCE OF A NEW BACTEROIDES-FRAGILIS INSERTION SEQUENCE-LIKE ELEMENT

被引:40
作者
RASMUSSEN, BA
KOVACS, E
机构
[1] Molecular Biology Section, Medical Research Division, American Cyanamid Company, Pearl River
关键词
D O I
10.1016/0147-619X(91)90027-T
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
A new Bacteroides fragilis insertion sequence (IS)-like element has been identified, cloned, and sequenced. The element is 1598 base pairs in length. It is flanked by a 15-base pair imperfect inverted repeat and contains a large open reading frame which could encode a 430 amino acid protein. There is an 8-base pair duplication of genomic DNA sequences at the site of integration. One copy of the IS-like element is integrated within the 5′ upstream sequence of the metallo-β-lactamase gene ccrA, cloned from B. fragilis TAL3636. The IS-like element is integrated 19 bp upstream of the predicted initiation codon and, therefore, probably provides the transcriptional start signals for the CcrA gene. © 1991.
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页码:141 / 144
页数:4
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