title: CRISPR adaptation in Escherichia coli subtypeI-E system.
abstract: The CRISPRs (clustered regularly interspaced short palindromic repeats) and their associated Cas (CRISPR-associated) proteins are a prokaryotic adaptive defence system against foreign nucleic acids. The CRISPR array comprises short repeats flanking short segments, called 'spacers', which are derived from foreign nucleic acids. The process of spacer insertion into the CRISPR array is termed 'adaptation'. Adaptation allows the system to rapidly evolve against emerging threats. In the present article, we review the most recent studies on the adaptation process, and focus primarily on the subtype I-E CRISPR-Cas system of Escherichia coli.
authors.affiliation: *Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
authors.forename: Ruth
authors.initials: R
authors.lastname: Kiro
authors.forename: Moran G
authors.initials: MG
authors.lastname: Goren
authors.forename: Ido
authors.initials: I
authors.lastname: Yosef
authors.forename: Udi
authors.initials: U
authors.lastname: Qimron
mesh_terms: D000222:Adaptation, Physiological; D064113:CRISPR-Cas Systems / Q000235:genetics*; D064112:Clustered Regularly Interspaced Short Palindromic Repeats / Q000235:genetics*; D004926:Escherichia coli / Q000235:genetics*