SecA is the preprotein translocase ATPase subunit and a superfamily 2 (SF2) RNA helicase [4]. This entry corresponds to the second P-loop domain.

1: Nucleotide control of interdomain interactions in the conformational reaction cycle of SecA. Hunt JF, Weinkauf S, Henry L, Fak JJ, McNicholas P, Oliver DB, Deisenhofer J; Science 2002;297:2018-2026. PMID:12242434

2: Crystal structure of Mycobacterium tuberculosis SecA, a preprotein translocating ATPase. Sharma V, Arockiasamy A, Ronning DR, Savva CG, Holzenburg A, Braunstein M, Jacobs WR Jr, Sacchettini JC; Proc Natl Acad Sci U S A. 2003;100:2243-2248. PMID:12606717

3: A large conformational change of the translocation ATPase SecA. Osborne AR, Clemons WM Jr, Rapoport TA; Proc Natl Acad Sci U S A. 2004;101:10937-10942. PMID:15256599

4: Structure of dimeric SecA, the Escherichia coli preprotein translocase motor. Papanikolau Y, Papadovasilaki M, Ravelli RB, McCarthy AA, Cusack S, Economou A, Petratos K; J Mol Biol. 2007;366:1545-1557. PMID:17229438

5: A novel dimer interface and conformational changes revealed by an X-ray structure of B. subtilis SecA. Zimmer J, Li W, Rapoport TA; J Mol Biol. 2006;364:259-265. PMID:16989859