STRINGSTRING
STRING protein interaction network
Nodes:
Network nodes represent proteins
splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
Node Color
colored nodes:
query proteins and first shell of interactors
white nodes:
second shell of interactors
Node Content
empty nodes:
proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
Edges:
Edges represent protein-protein associations
associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding to each other.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
Others
textmining
co-expression
protein homology
Your Input:
Neighborhood
Gene Fusion
Cooccurrence
Coexpression
Experiments
Databases
Textmining
[Homology]
Score
sigMRNA polymerase ECF (extracytoplasmic function)-type sigma factor (sigma(M)); Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Extracytoplasmic function (ECF) sigma factors are held in an inactive form by a cognate anti-sigma factor (YhdL) until released. This sigma factor is involved in the maintenance of membrane and cell wall integrity in response to environmental stresses including salt, acid, ethanol and antibiotics stress. Partially regulates transcription from a number of genes including disA. (163 aa)    
Predicted Functional Partners:
yhdL
Negative regulator of the activity of sigma-M; Evidence 1a: Function experimentally demonstrated in the studied strain; Product type ph: phenotype.
  
 
 0.988
sigV
RNA polymerase ECF(extracytoplasmic function)-type sigma factor (sigma(V)); Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Positively regulates the expression of proteins involved in stress responses against bacitracin, paraquat and tellurite. Belongs to the sigma-70 factor family. ECF subfamily.
  
  
 0.976
yhdK
Negative regulator of the activity of sigma-M; Evidence 1a: Function experimentally demonstrated in the studied strain; Product type ph: phenotype.
  
  
 0.943
sigH
RNA polymerase sigma-30 factor (sigma(H)); Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is involved in the transition to post- exponential phase in the beginning of sporulation. It is also required for transcription of several stationary phase genes.
   
  
 0.845
bcrC
Undecaprenyl pyrophosphate phosphatase; Catalyzes the dephosphorylation of undecaprenyl diphosphate (UPP). Confers resistance to bacitracin; Belongs to the BcrC/YbjG family.
   
  
 0.790
sigI
RNA polymerase sigma factor; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is involved in regulation of cell wall metabolism in response to heat stress. Acts by regulating the expression of genes such as bcrC, mreBH and lytE. Also plays a role in survival at low temperatures. Belongs to the sigma-70 factor family. SigI subfamily.
   
  
 0.763
sigL
RNA polymerase sigma-54 factor (sigma-L); Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is responsible for the expression of the levanase operon. The open complex (sigma-54 and core RNA polymerase) serves as the receptor for receipt of the melting signal from the remotely bound activator protein LevR for the expression of the levanase operon.
   
  
 0.719
rsiW
anti-sigma(W) factor; The anti-sigma factor for extracytoplasmic function (ECF) sigma factor sigma-W (SigW). Holds SigW, its cognate ECF sigma factor, in an inactive form until released by regulated intramembrane proteolysis (RIP). SigW and RsiW mediate cell response to cell wall stress. RIP occurs when an extracytoplasmic signal triggers a concerted proteolytic cascade to transmit information and elicit cellular responses. The membrane-spanning regulatory substrate protein is first cut periplasmically (site-1 protease, S1P, PrsW) , then within the membrane itself (site-2 protease, S2P [...]
 
 
 0.707
sigB
RNA polymerase sigma-37 factor (sigma(B)); Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Sigma B is not essential for sporulation; rather it is required for maximal expression of ctc and csbA which are transcribed in the early stationary phase under conditions inimical to sporulation. May play a role in the ability of the bacterium to adapt to various stresses but is not essential for its survival under these conditions. Positively regulates expression of its own operon; Belongs to the sigma-70 fac [...]
      
 0.694
ydaH
Putative integral inner membrane protein; Involved in peptidoglycan biosynthesis. Transports lipid- linked peptidoglycan precursors from the inner to the outer leaflet of the cytoplasmic membrane. May serve as a defense mechanism against naturally occurring MurJ antagonists.
   
  
 0.642
Your Current Organism:
Bacillus subtilis 168
NCBI taxonomy Id: 224308
Other names: B. subtilis subsp. subtilis str. 168, Bacillus subtilis subsp. subtilis 168, Bacillus subtilis subsp. subtilis str. 168, Bacillus subtilis subsp. subtilis str. BGSC 1A700
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