SigX

• Description: RNA polymerase ECF-type sigma factor SigX
  
  

Gene name	sigX
Synonyms	ypuM
Essential	no
Product	RNA polymerase ECF-type sigma factor SigX
Function	cell surface properties
Interactions involving this protein in SubtInteract: SigX
MW, pI	23 kDa, 6.086
Gene length, protein length	582 bp, 194 aa
Immediate neighbours	rsiX, resE
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

transcription, sigma factors and their control, cell envelope stress proteins (controlled by SigM, W, X, Y), membrane proteins

This gene is a member of the following regulons

SigX regulon, YvrHb regulon

The gene

Basic information

• Locus tag: BSU23100

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: ECF subfamily (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:
  • RsiX-SigX PubMed
  • SigX-RpoB-RpoC

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

Database entries

• Structure:

• UniProt: P35165

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: sigX-rsiX PubMed

• Sigma factor: SigA PubMed, SigX PubMed

• Regulation:

• Regulatory mechanism: activated by YvrHb PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Additional publications: PubMed

The SigX regulon

Thorsten Mascher, Anna-Barbara Hachmann, John D Helmann
Regulatory overlap and functional redundancy among Bacillus subtilis extracytoplasmic function sigma factors.
J Bacteriol: 2007, 189(19);6919-27
[PubMed:17675383] [WorldCat.org] [DOI] (P p)

M S Turner, J D Helmann
Mutations in multidrug efflux homologs, sugar isomerases, and antimicrobial biosynthesis genes differentially elevate activity of the sigma(X) and sigma(W) factors in Bacillus subtilis.
J Bacteriol: 2000, 182(18);5202-10
[PubMed:10960106] [WorldCat.org] [DOI] (P p)

X Huang, K L Fredrick, J D Helmann
Promoter recognition by Bacillus subtilis sigmaW: autoregulation and partial overlap with the sigmaX regulon.
J Bacteriol: 1998, 180(15);3765-70
[PubMed:9683469] [WorldCat.org] [DOI] (P p)