SecA

• 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 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]

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

• Interactions: (SecY-SecE-SecG)2-SecA2 PubMed, SecA-Ffh, CsaA-SecA

• Localization: cell membrane (according to Swiss-Prot)

Database entries

• Structure: 1TF5 (open structure), 2IBM, 3DL8 (structure of the (SecY-SecE-SecG)-SecA complex PubMed

• UniProt: P28366

• KEGG entry: [3]

• E.C. number:

Additional information

• subject to Clp-dependent proteolysis upon glucose starvation PubMed

Expression and regulation

• Operon: secA-prfB PubMed

• Sigma factor: SigA PubMed

• Regulation:

• Regulatory mechanism:

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

Biological materials

• Mutant: Pspac-secA PubMed

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: