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  • Description: DNA recombinase, SP-beta prophage site-specific recombination factor A

Gene name yokA
Essential no
Product SP-beta prophage site-specific recombination factor A
Function excision of the SP-beta prophage
Gene expression levels in SubtiExpress: sprA
MW, pI 62 kDa, 8.946
Gene length, protein length 1635 bp, 545 aa
Immediate neighbours yokB, ypqP
Sequences Protein DNA DNA_with_flanks
Genetic context
YokA context.gif
This image was kindly provided by SubtiList
Expression at a glance   PubMed
YokA expression.png

Categories containing this gene/protein

DNA repair/ recombination, SP-beta prophage

This gene is a member of the following regulons

The gene

Basic information

  • Locus tag: BSU21660

Phenotypes of a mutant

Database entries

  • DBTBS entry: no entry
  • SubtiList entry: [1]

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity:
  • Protein family:
  • Paralogous protein(s):

Extended information on the protein

  • Kinetic information:
  • Domains:
  • Modification:
  • Cofactor(s):
  • Effectors of protein activity:

Database entries

  • Structure:
  • KEGG entry: [2]
  • E.C. number:

Additional information

Expression and regulation

  • Operon:
  • Regulation:
  • Regulatory mechanism:
  • Additional information:
    • number of protein molecules per cell (minimal medium with glucose and ammonium): 154 PubMed

Biological materials

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

Labs working on this gene/protein

Your additional remarks


Kimihiro Abe, Yuta Kawano, Keito Iwamoto, Kenji Arai, Yuki Maruyama, Patrick Eichenberger, Tsutomu Sato
Developmentally-regulated excision of the SPβ prophage reconstitutes a gene required for spore envelope maturation in Bacillus subtilis.
PLoS Genet.: 2014, 10(10);e1004636
[PubMed:25299644] [WorldCat.org] [DOI] (I e)