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© Marie-Christine Prévost, Anne Derbise
Bactéries Yersinia pestis en microscopie electronique à balayage.
Publication : Journal of bacteriology

Palindromic unit-independent transposition of IS1397 in Yersinia pestis

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Journal of bacteriology - 01 Sep 2002

Wilde C, Bachellier S, Hofnung M, Carniel E, Clément JM

Link to Pubmed [PMID] – 12169598

J. Bacteriol. 2002 Sep;184(17):4739-46

Palindromic units (PUs) are intergenic repeated sequences scattered over the chromosomes of Escherichia coli and several other enterobacteria. In the latter, IS1397, an E. coli insertion sequence specific to PUs, transposes into PUs with sequences close to the E. coli consensus. Reasons for this insertion specificity can relate to either a direct recognition of the target (by its sequence or its structure) by the transposase or an interaction between a specific host protein and the PU target DNA sequence. In this study, we show that for Yersinia pestis, a species deprived of PUs, IS1397 can transpose onto its chromosome, with transpositional hot spots. Our results are in favor of a direct recognition of target DNA by IS1397 transposase.

http://www.ncbi.nlm.nih.gov/pubmed/12169598