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DnaT DNA-binding domain This domain is found in E.coli primosomal protein 1 (Pp1). PP1 domain (residues 84-153) in Swiss:P0A8J2 can bind to different types of ssDNA, which is fundamental for its physiological substrate bindings. Functional analysis indicate that both N- and C- terminals are essential to having the cooperative effect in binding ssDNA. The ssDNA bound complex displays a spiral filament assembly that is adopted by many proteins that are involved in DNA replication, such as DnaA, RecA and PriB. This domain is similar to pfam08585 except that it contains an extra loop at the N-terminus (84-99). Structural analysis indicate that this extra loop might be essential for the stabilization of the three-helix bundle.
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