Dissemin is shutting down on January 1st, 2025

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Portland Press, Biochemical Journal, 7(480), p. 471-488, 2023

DOI: 10.1042/bcj20220073

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The biology and type I/III hybrid nature of type I-D CRISPR–Cas systems

Distributing this paper is prohibited by the publisher
Distributing this paper is prohibited by the publisher

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Data provided by SHERPA/RoMEO

Abstract

Prokaryotes have adaptive defence mechanisms that protect them from mobile genetic elements and viral infection. One defence mechanism is called CRISPR–Cas (clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins). There are six different types of CRISPR–Cas systems and multiple subtypes that vary in composition and mode of action. Type I and III CRISPR–Cas systems utilise multi-protein complexes, which differ in structure, nucleic acid binding and cleaving preference. The type I-D system is a chimera of type I and III systems. Recently, there has been a burst of research on the type I-D CRISPR–Cas system. Here, we review the mechanism, evolution and biotechnological applications of the type I-D CRISPR–Cas system.