SecA

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  • Description: preprotein translocase subunit (ATPase)

Gene name secA
Synonyms div, div-341, ts-341
Essential yes PubMed
Product preprotein translocase subunit (ATPase)
Function protein secretion
MW, pI 95 kDa, 5.34
Gene length, protein length 2523 bp, 841 aa
Immediate neighbours prfB, yvyD
Get the DNA and protein sequences
(Barbe et al., 2009)
Genetic context
SecA context.gif
This image was kindly provided by SubtiList



The gene

Basic information

  • Locus tag: BSU35300

Phenotypes of a mutant

essential PubMed

Database entries

  • DBTBS entry: [1]
  • SubtiList entry: [2]

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity: ATP -> ADP + Pi + preprotein translocation
  • Protein family: SecA family (according to Swiss-Prot)
  • Paralogous protein(s): none in Bacillus, some species have a paralogous secA gene named secA2 that has an altered substrate range

Extended information on the protein

  • Kinetic information:
  • Domains: nucleotide binding domain, preprotein binding domain, IRA2 domain, scaffold domain, wing domain, IRA1 domain, C-terminal domain
  • Modification:
  • Cofactor(s): magnesium
  • Effectors of protein activity: anionic phospholipids, preprotein, SecY, signal peptides (even when added in trans) PubMed
  • Localization: cell membrane (according to Swiss-Prot)

Database entries

  • Structure: 1TF5 (open structure), 2IBM
  • KEGG entry: [3]
  • E.C. number:

Additional information

  • subject to Clp-dependent proteolysis upon glucose starvation PubMed

Expression and regulation

  • Regulation:
  • Regulatory mechanism:
  • Additional information: subject to Clp-dependent proteolysis upon glucose starvation PubMed

Biological materials

  • Expression vector:
  • lacZ fusion:
  • GFP fusion:
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Your additional remarks

References

Benedikt W Bauer, Tom A Rapoport
Mapping polypeptide interactions of the SecA ATPase during translocation.
Proc Natl Acad Sci U S A: 2009, 106(49);20800-5
[PubMed:19933328] [WorldCat.org] [DOI] (I p)

Giorgos Gouridis, Spyridoula Karamanou, Ioannis Gelis, Charalampos G Kalodimos, Anastassios Economou
Signal peptides are allosteric activators of the protein translocase.
Nature: 2009, 462(7271);363-7
[PubMed:19924216] [WorldCat.org] [DOI] (I p)

Jochen Zimmer, Tom A Rapoport
Conformational flexibility and peptide interaction of the translocation ATPase SecA.
J Mol Biol: 2009, 394(4);606-12
[PubMed:19850053] [WorldCat.org] [DOI] (I p)

Jochen Zimmer, Yunsun Nam, Tom A Rapoport
Structure of a complex of the ATPase SecA and the protein-translocation channel.
Nature: 2008, 455(7215);936-43
[PubMed:18923516] [WorldCat.org] [DOI] (I p)

Haiyuan Ding, John F Hunt, Ishita Mukerji, Donald Oliver
Bacillus subtilis SecA ATPase exists as an antiparallel dimer in solution.
Biochemistry: 2003, 42(29);8729-38
[PubMed:12873133] [WorldCat.org] [DOI] (P p)

John F Hunt, Sevil Weinkauf, Lisa Henry, John J Fak, Paul McNicholas, Donald B Oliver, Johann Deisenhofer
Nucleotide control of interdomain interactions in the conformational reaction cycle of SecA.
Science: 2002, 297(5589);2018-26
[PubMed:12242434] [WorldCat.org] [DOI] (I p)

J P Müller, J Ozegowski, S Vettermann, J Swaving, K H Van Wely, A J Driessen
Interaction of Bacillus subtilis CsaA with SecA and precursor proteins.
Biochem J: 2000, 348 Pt 2(Pt 2);367-73
[PubMed:10816431] [WorldCat.org] (P p)

K Bunai, K Yamada, K Hayashi, K Nakamura, K Yamane
Enhancing effect of Bacillus subtilis Ffh, a homologue of the SRP54 subunit of the mammalian signal recognition particle, on the binding of SecA to precursors of secretory proteins in vitro.
J Biochem: 1999, 125(1);151-9
[PubMed:9880811] [WorldCat.org] [DOI] (P p)

H Takamatsu, S Fuma, K Nakamura, Y Sadaie, A Shinkai, S Matsuyama, S Mizushima, K Yamane
In vivo and in vitro characterization of the secA gene product of Bacillus subtilis.
J Bacteriol: 1992, 174(13);4308-16
[PubMed:1385592] [WorldCat.org] [DOI] (P p)