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UvrB domain 3
SWI2/SNF2 ATPase
A SWi2/SNF2 ATPase found in polyvalent proteins [1]. [1]. 28559295. Polyvalent Proteins, a Pervasive Theme in the Intergenomic. Biological Conflicts of Bacteriophages and Conjugative Elements.. Iyer LM, Burroughs AM, Anand S, de Souza RF, Aravind L;. J Bacteriol. 2017; [Epub ahead of print] (from Pfam)
type I restriction endonuclease
This HMM described the endonuclease domain of HsdR family type I restriction endonucleases. These enzymes also have RecA-like helicase domains.
DEAD/DEAH box helicase family protein
type I restriction endonuclease subunit R
type I restriction endonuclease subunit R (HsdR) is required for both nuclease and ATPase activities, but not for modification; belongs to the DEAD/DEAH box helicase superfamily
HsdR family type I site-specific deoxyribonuclease
This gene is part of the type I restriction and modification system which is composed of three polypeptides R (restriction endonuclease), M (modification) and S (specificity). This group of enzymes recognize specific short DNA sequences and have an absolute requirement for ATP (or dATP) and S-adenosyl-L-methionine. They also catalyse the reactions of EC 2.1.1.72 and EC 2.1.1.73, with similar site specificity.(J. Mol. Biol. 271 (3), 342-348 (1997)). Members of this family are assumed to differ from each other in DNA site specificity.
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