Ontology Term : Pfam:PF04257 Exodeoxyribonuclease V, gamma subunit EMBL-EBI

Description  The Exodeoxyribonuclease V enzyme is a multi-subunit enzyme comprised of the proteins RecB, RecC (this family) and RecD. This enzyme plays an important role in homologous genetic recombination, repair of double strand DNA breaks resistance to UV irradiation and chemical DNA-damage. The enzyme (EC:3.1.11.5) catalyses ssDNA or dsDNA-dependent ATP hydrolysis, hydrolysis of ssDNA or dsDNA and unwinding of dsDNA [1]. This subunit recognises and binds DNA forks containing Chi sequences in a sequence specific manner while Chi interactions with the phosphodiester backbone (mainly arginine side chains) stabilise the twisted conformation of the DNA. These interactions induce conformational changes that switch RecBCD from bacteriophage destruction and CRISPR spacer acquisition, to constructive host DNA repair [2].
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