SspB

• Description: small acid-soluble spore protein (major beta-type SASP)
  
  

Gene name	sspB
Synonyms
Essential	no
Product	small acid-soluble spore protein (major beta-type SASP)
Function	protection of spore DNA
MW, pI	6 kDa, 4.791
Gene length, protein length	201 bp, 67 aa
Immediate neighbours	yheF, yheE
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: BSU09750

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: alpha/beta-type SASP family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• Structure:

• UniProt: P04832

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: sspB PubMed

• Sigma factor: SigG PubMed

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

• Regulatory mechanism:
  • SpoVT: transcription activation PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Ralf Moeller, Peter Setlow, Günther Reitz, Wayne L Nicholson
Roles of small, acid-soluble spore proteins and core water content in survival of Bacillus subtilis spores exposed to environmental solar UV radiation.
Appl Environ Microbiol: 2009, 75(16);5202-8
[PubMed:19542328] [WorldCat.org] [DOI] (I p)

Barbara Setlow, Swaroopa Atluri, Ryan Kitchel, Kasia Koziol-Dube, Peter Setlow
Role of dipicolinic acid in resistance and stability of spores of Bacillus subtilis with or without DNA-protective alpha/beta-type small acid-soluble proteins.
J Bacteriol: 2006, 188(11);3740-7
[PubMed:16707666] [WorldCat.org] [DOI] (P p)

Thierry Douki, Barbara Setlow, Peter Setlow
Effects of the binding of alpha/beta-type small, acid-soluble spore proteins on the photochemistry of DNA in spores of Bacillus subtilis and in vitro.
Photochem Photobiol: 2005, 81(1);163-9
[PubMed:15458366] [WorldCat.org] [DOI] (P p)

B Setlow, K A McGinnis, K Ragkousi, P Setlow
Effects of major spore-specific DNA binding proteins on Bacillus subtilis sporulation and spore properties.
J Bacteriol: 2000, 182(24);6906-12
[PubMed:11092849] [WorldCat.org] [DOI] (P p)

B Setlow, P Setlow
Binding to DNA protects alpha/beta-type, small, acid-soluble spore proteins of Bacillus and Clostridium species against digestion by their specific protease as well as by other proteases.
J Bacteriol: 1995, 177(14);4149-51
[PubMed:7608092] [WorldCat.org] [DOI] (P p)

P Fajardo-Cavazos, F Tovar-Rojo, P Setlow
Effect of promoter mutations and upstream deletions on the expression of genes coding for small, acid-soluble spore proteins of Bacillus subtilis.
J Bacteriol: 1991, 173(6);2011-6
[PubMed:1900507] [WorldCat.org] [DOI] (P p)

J M Mason, P Fajardo-Cavazos, P Setlow
Levels of mRNAs which code for small, acid-soluble spore proteins and their LacZ gene fusions in sporulating cells of Bacillus subtilis.
Nucleic Acids Res: 1988, 16(14A);6567-83
[PubMed:2456528] [WorldCat.org] [DOI] (P p)

M J Connors, J M Mason, P Setlow
Cloning and nucleotide sequencing of genes for three small, acid-soluble proteins from Bacillus subtilis spores.
J Bacteriol: 1986, 166(2);417-25
[PubMed:3009398] [WorldCat.org] [DOI] (P p)