GerKA

• Description: nutrient receptor
  
  

Gene name	gerKA
Synonyms
Essential	no
Product	nutrient receptor
Function	germination response to the combination of glucose, fructose, aspartate, and KCl
MW, pI	60 kDa, 5.206
Gene length, protein length	1632 bp, 544 aa
Immediate neighbours	yczF, gerKC
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

germination, membrane proteins

This gene is a member of the following regulons

SigG regulon, SpoVT regulon

The gene

Basic information

• Locus tag: BSU03700

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: gerABKA family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:
  • GerKA-GerKB-GerKC (tentative receptor complex) PubMed
  • GerKA is part of the germinosome in the spore inner membrane PubMed

• Localization:
  • spore inner membrane PubMed

Database entries

• Structure:

• UniProt: P49939

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: gerKA-gerKC-gerKB (according to DBTBS)

• Sigma factor: SigG PubMed

• Regulation:
  • expressed during sporulation (SigG, SpoVT) PubMed

• Regulatory mechanism:
  • SpoVT: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Additional publications: PubMed

Keren K Griffiths, Jingqiao Zhang, Ann E Cowan, Ji Yu, Peter Setlow
Germination proteins in the inner membrane of dormant Bacillus subtilis spores colocalize in a discrete cluster.
Mol Microbiol: 2011, 81(4);1061-77
[PubMed:21696470] [WorldCat.org] [DOI] (I p)

Takao Igarashi, Peter Setlow
Transcription of the Bacillus subtilis gerK operon, which encodes a spore germinant receptor, and comparison with that of operons encoding other germinant receptors.
J Bacteriol: 2006, 188(11);4131-6
[PubMed:16707705] [WorldCat.org] [DOI] (P p)

Swaroopa Atluri, Katerina Ragkousi, Donna E Cortezzo, Peter Setlow
Cooperativity between different nutrient receptors in germination of spores of Bacillus subtilis and reduction of this cooperativity by alterations in the GerB receptor.
J Bacteriol: 2006, 188(1);28-36
[PubMed:16352818] [WorldCat.org] [DOI] (P p)