SecA

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  • Description: preprotein translocase subunit (ATPase), required for membrane targeting of DivIVA, motor protein that drives preprotein translocation through the SecY-SecE-SecG channel

Gene name secA
Synonyms div, div-341, ts-341
Essential yes PubMed
Product preprotein translocase subunit (ATPase)
Function protein secretion
Gene expression levels in SubtiExpress: secA
Interactions involving this protein in SubtInteract: SecA
Metabolic function and regulation of this protein in SubtiPathways:
SecA
MW, pI 95 kDa, 5.34
Gene length, protein length 2523 bp, 841 aa
Immediate neighbours prfB, yvyD
Sequences Protein DNA DNA_with_flanks
Genetic context
SecA context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
SecA expression.png















Categories containing this gene/protein

protein secretion, essential genes, membrane proteins

This gene is a member of the following regulons

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
    • required for membrane targeting of DivIVA PubMed
  • 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:
  • Effectors of protein activity: anionic phospholipids, preprotein, SecY, signal peptides (even when added in trans) PubMed

Database entries

  • 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
    • number of protein molecules per cell (minimal medium with glucose and ammonium): 945 PubMed
    • number of protein molecules per cell (complex medium with amino acids, without glucose): 2829 PubMed
    • number of protein molecules per cell (minimal medium with glucose and ammonium, exponential phase): 411 PubMed
    • number of protein molecules per cell (minimal medium with glucose and ammonium, early stationary phase after glucose exhaustion): 395 PubMed
    • number of protein molecules per cell (minimal medium with glucose and ammonium, late stationary phase after glucose exhaustion): 564 PubMed

Biological materials

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

Labs working on this gene/protein

Your additional remarks

References

Andy J Wowor, Yuetian Yan, Sarah M Auclair, Dongmei Yu, Jun Zhang, Eric R May, Michael L Gross, Debra A Kendall, James L Cole
Analysis of SecA dimerization in solution.
Biochemistry: 2014, 53(19);3248-60
[PubMed:24786965] [WorldCat.org] [DOI] (I p)

Sven Halbedel, Maki Kawai, Reinhard Breitling, Leendert W Hamoen
SecA is required for membrane targeting of the cell division protein DivIVA in vivo.
Front Microbiol: 2014, 5;58
[PubMed:24592260] [WorldCat.org] [DOI] (P e)

Chun-Kai Yang, Chung-Dar Lu, Phang C Tai
Differential expression of secretion machinery during bacterial growth: SecY and SecF decrease while SecA increases during transition from exponential phase to stationary phase.
Curr Microbiol: 2013, 67(6);682-7
[PubMed:23852076] [WorldCat.org] [DOI] (I p)

Jianmei Cui, Jinshan Jin, Ying-Hsin Hsieh, Hsiuchin Yang, Bowen Ke, Krishna Damera, Phang C Tai, Binghe Wang
Design, synthesis and biological evaluation of rose bengal analogues as SecA inhibitors.
ChemMedChem: 2013, 8(8);1384-93
[PubMed:23794293] [WorldCat.org] [DOI] (I p)

Sarah M Auclair, Donald B Oliver, Ishita Mukerji
Defining the solution state dimer structure of Escherichia coli SecA using Förster resonance energy transfer.
Biochemistry: 2013, 52(14);2388-401
[PubMed:23484952] [WorldCat.org] [DOI] (I p)

Dorothy M Kim, Haiyan Zheng, Yuanpeng J Huang, Gaetano T Montelione, John F Hunt
ATPase active-site electrostatic interactions control the global conformation of the 100 kDa SecA translocase.
J Am Chem Soc: 2013, 135(8);2999-3010
[PubMed:23167435] [WorldCat.org] [DOI] (I p)

Hiroshi Kakeshita, Yasushi Kageyama, Katsutoshi Ara, Katsuya Ozaki, Kouji Nakamura
Enhanced extracellular production of heterologous proteins in Bacillus subtilis by deleting the C-terminal region of the SecA secretory machinery.
Mol Biotechnol: 2010, 46(3);250-7
[PubMed:20574771] [WorldCat.org] [DOI] (I p)

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)

Ulf Gerth, Holger Kock, Ilja Kusters, Stephan Michalik, Robert L Switzer, Michael Hecker
Clp-dependent proteolysis down-regulates central metabolic pathways in glucose-starved Bacillus subtilis.
J Bacteriol: 2008, 190(1);321-31
[PubMed:17981983] [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)

Jan D H Jongbloed, Haike Antelmann, Michael Hecker, Reindert Nijland, Sierd Bron, Ulla Airaksinen, Frens Pries, Wim J Quax, Jan Maarten van Dijl, Peter G Braun
Selective contribution of the twin-arginine translocation pathway to protein secretion in Bacillus subtilis.
J Biol Chem: 2002, 277(46);44068-78
[PubMed:12218047] [WorldCat.org] [DOI] (P p)

Karel H M van Wely, Jelto Swaving, Michael Klein, Roland Freudl, Arnold J M Driessen
The carboxyl terminus of the Bacillus subtilis SecA is dispensable for protein secretion and viability.
Microbiology (Reading): 2000, 146 ( Pt 10);2573-2581
[PubMed:11021932] [WorldCat.org] [DOI] (P 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)

L Leloup, A J Driessen, R Freudl, R Chambert, M F Petit-Glatron
Differential dependence of levansucrase and alpha-amylase secretion on SecA (Div) during the exponential phase of growth of Bacillus subtilis.
J Bacteriol: 1999, 181(6);1820-6
[PubMed:10074074] [WorldCat.org] [DOI] (P p)

M Herbort, M Klein, E H Manting, A J Driessen, R Freudl
Temporal expression of the Bacillus subtilis secA gene, encoding a central component of the preprotein translocase.
J Bacteriol: 1999, 181(2);493-500
[PubMed:9882663] [WorldCat.org] [DOI] (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)

A Nakane, H Takamatsu, A Oguro, Y Sadaie, K Nakamura, K Yamane
Acquisition of azide-resistance by elevated SecA ATPase activity confers azide-resistance upon cell growth and protein translocation in Bacillus subtilis.
Microbiology (Reading): 1995, 141 ( Pt 1);113-21
[PubMed:7894702] [WorldCat.org] [DOI] (P p)

M Klein, B Hofmann, M Klose, R Freudl
Isolation and characterization of a Bacillus subtilis secA mutant allele conferring resistance to sodium azide.
FEMS Microbiol Lett: 1994, 124(3);393-7
[PubMed:7851746] [WorldCat.org] [DOI] (P p)

J van der Wolk, M Klose, E Breukink, R A Demel, B de Kruijff, R Freudl, A J Driessen
Characterization of a Bacillus subtilis SecA mutant protein deficient in translocation ATPase and release from the membrane.
Mol Microbiol: 1993, 8(1);31-42
[PubMed:8497195] [WorldCat.org] [DOI] (P p)

M Klose, K L Schimz, J van der Wolk, A J Driessen, R Freudl
Lysine 106 of the putative catalytic ATP-binding site of the Bacillus subtilis SecA protein is required for functional complementation of Escherichia coli secA mutants in vivo.
J Biol Chem: 1993, 268(6);4504-10
[PubMed:8440733] [WorldCat.org] (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)

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