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ParB family protein
ParB is a component of the par system which mediates accurate DNA partition during cell division. It recognises A-box and B-box DNA motifs. ParB forms an asymmetric dimer with 2 extended helix-turn-helix (HTH) motifs that bind to A-boxes. The HTH motifs emanate from a beta sheet coiled coil DNA binding module [1]. Both DNA binding elements are free to rotate around a flexible linker, this enables them to bind to complex arrays of A- and B-box elements on adjacent DNA arms of the looped partition site [1]. [1]. 16306995. Structures of ParB bound to DNA reveal mechanism of partition complex formation. Schumacher MA, Funnell BE;. Nature. 2005;438:516-519. (from Pfam)
DNA sulfur modification protein DndB; ParB N-terminal domain-containing protein
DNA sulfur modification protein DndB acts in the regulation of DNA modifications, including DNA phosphorothioation, by binding near the phosphorothioate modification site and regulating access of the Dnd modification machinery to DNA| ParB N-terminal domain-containing protein
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