CotX

• Description: spore coat protein (insoluble fraction), necessary for the assembly of the spore crust, the outermost layer of the spore coat
  
  

Gene name	cotX
Synonyms
Essential	no
Product	spore coat protein (insoluble fraction)
Function	spore coat assembly
Gene expression levels in SubtiExpress: cotX
MW, pI	18 kDa, 4.228
Gene length, protein length	516 bp, 172 aa
Immediate neighbours	cotY, cotW
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

sporulation proteins

This gene is a member of the following regulons

GerE regulon, SigK regulon

The gene

Basic information

• Locus tag: BSU11760

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

Additional information

• A mutation was found in this gene after evolution under relaxed selection for sporulation PubMed

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:

• Interactions:

• Localization:
  • spore wall (according to Swiss-Prot)

Database entries

• Structure:

• UniProt: Q08313

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: cotV-cotW-cotX PubMed

cotX PubMed

• Expression browser: cotX PubMed

• Sigma factor: before cotV: SigK PubMed

before cotX: SigK PubMed

• Regulation: repressed by casamino acids PubMed

• Regulatory mechanism: upstream of cotX: SpoIIID: repression PubMed, upstream of both promoters: GerE: transcription activation PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Christopher T Brown, Laura K Fishwick, Binna M Chokshi, Marissa A Cuff, Jay M Jackson, Travis Oglesby, Alison T Rioux, Enrique Rodriguez, Gregory S Stupp, Austin H Trupp, James S Woollcombe-Clarke, Tracy N Wright, William J Zaragoza, Jennifer C Drew, Eric W Triplett, Wayne L Nicholson
Whole-genome sequencing and phenotypic analysis of Bacillus subtilis mutants following evolution under conditions of relaxed selection for sporulation.
Appl Environ Microbiol: 2011, 77(19);6867-77
[PubMed:21821766] [WorldCat.org] [DOI] (I p)

Daisuke Imamura, Ritsuko Kuwana, Hiromu Takamatsu, Kazuhito Watabe
Proteins involved in formation of the outermost layer of Bacillus subtilis spores.
J Bacteriol: 2011, 193(16);4075-80
[PubMed:21665972] [WorldCat.org] [DOI] (I p)

Peter T McKenney, Adam Driks, Haig A Eskandarian, Paul Grabowski, Jonathan Guberman, Katherine H Wang, Zemer Gitai, Patrick Eichenberger
A distance-weighted interaction map reveals a previously uncharacterized layer of the Bacillus subtilis spore coat.
Curr Biol: 2010, 20(10);934-8
[PubMed:20451384] [WorldCat.org] [DOI] (I p)

Ulrike Mäder, Georg Homuth, Christian Scharf, Knut Büttner, Rüdiger Bode, Michael Hecker
Transcriptome and proteome analysis of Bacillus subtilis gene expression modulated by amino acid availability.
J Bacteriol: 2002, 184(15);4288-95
[PubMed:12107147] [WorldCat.org] [DOI] (P p)

H Ichikawa, L Kroos
Combined action of two transcription factors regulates genes encoding spore coat proteins of Bacillus subtilis.
J Biol Chem: 2000, 275(18);13849-55
[PubMed:10788508] [WorldCat.org] [DOI] (P p)

J Zhang, H Ichikawa, R Halberg, L Kroos, A I Aronson
Regulation of the transcription of a cluster of Bacillus subtilis spore coat genes.
J Mol Biol: 1994, 240(5);405-15
[PubMed:7519271] [WorldCat.org] [DOI] (P p)