Recruitment of Cas3 enables DNA cleavage by the type I-A CRISPR-Cas system of Saccharolobus islandicus
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Type I CRISPR-Cas systems constitute the most prevalent prokaryotic adaptive immune pathways and are classified into seven subtypes (I-A to I-G). These antiviral systems typically exploit a Cascade complex for RNA-guided DNA recognition and a Cas3 helicase-nuc... ...