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
hprKSerine/threonine protein kinase/phosphorylase; Catalyzes the ATP- as well as the pyrophosphate-dependent phosphorylation of 'Ser-45' in HPr, a phosphocarrier protein of the phosphoenolpyruvate-dependent sugar phosphotransferase system (PTS). HprK/P also catalyzes the pyrophosphate-producing, inorganic phosphate- dependent dephosphorylation (phosphorolysis) of seryl-phosphorylated HPr (P-Ser-HPr). The two antagonistic activities of HprK/P are regulated by several intracellular metabolites, which change their concentration in response to the absence or presence of rapidly metabolisable c [...] (310 aa)    
Predicted Functional Partners:
ptsH
Histidine-containing phosphocarrier protein of the phosphotransferase system (PTS) (HPr protein); General (non sugar-specific) component of the phosphoenolpyruvate-dependent sugar phosphotransferase system (sugar PTS). This major carbohydrate active-transport system catalyzes the phosphorylation of incoming sugar substrates concomitantly with their translocation across the cell membrane. The phosphoryl group from phosphoenolpyruvate (PEP) is transferred to the phosphoryl carrier protein HPr by enzyme I. Phospho-HPr then transfers it to the PTS EIIA domain.
 
 
 0.985
crh
Catabolite repression HPr-like protein; Along with seryl-phosphorylated HPr, phosphorylated Crh is implicated in carbon catabolite repression (CCR) of levanase, inositol dehydrogenase, and beta-xylosidase. Exerts its effect on CCR by interacting with CcpA.
 
 
 0.985
scoC
HTH-type transcriptional regulator Hpr; Negative regulator of protease production and sporulation. Acts by binding directly to the promoter of protease genes (aprE and nprE), and by repressing oligopeptide permease operons (appABCDF and oppABCDF), thereby preventing uptake of oligopeptides required for initiation of sporulation. Acts with SinR as a corepressor of epr expression.
   
 
 0.982
ppaX
P-Ser-HPr phosphatase; Hydrolyzes pyrophosphate formed during P-Ser-HPr dephosphorylation by HPrK/P. Might play a role in controlling the intracellular pyrophosphate pool; Belongs to the HAD-like hydrolase superfamily. PpaX family.
  
  
 0.968
lgt
Prelipoprotein diacylglycerol transferase; Catalyzes the transfer of the diacylglyceryl group from phosphatidylglycerol to the sulfhydryl group of the N-terminal cysteine of a prolipoprotein, the first step in the formation of mature lipoproteins. Required for spore germination; Belongs to the Lgt family.
  
  
 0.934
ptsI
Phosphotransferase system (PTS) enzyme I; General (non sugar-specific) component of the phosphoenolpyruvate-dependent sugar phosphotransferase system (sugar PTS). This major carbohydrate active-transport system catalyzes the phosphorylation of incoming sugar substrates concomitantly with their translocation across the cell membrane. Enzyme I transfers the phosphoryl group from phosphoenolpyruvate (PEP) to the phosphoryl carrier protein (HPr).
 
  
 0.932
ccpA
Transcriptional regulator (Lacl family); Global transcriptional regulator of carbon catabolite repression (CCR) and carbon catabolite activation (CCA), which ensures optimal energy usage under diverse conditions. Interacts with either P- Ser-HPr or P-Ser-Crh, leading to the formation of a complex that binds to DNA at the catabolite-response elements (cre). Binding to DNA allows activation or repression of many different genes and operons.
      
 0.925
fbp
Fructose-1,6-bisphosphatase; Evidence 1a: Function experimentally demonstrated in the studied strain; Product type e: enzyme.
      
 0.907
yvoD
Putative integral inner membrane protein; Evidence 3: Function proposed based on presence of conserved amino acid motif, structural feature or limited homology; Product type pm: putative membrane component.
  
    0.878
prkC
Protein kinase; Protein kinase that is responsible for triggering spore germination in response to muropeptides, signaling bacteria to exit dormancy. PrkC is thus a germination receptor that binds peptidoglycan fragments containing m-Dpm (meso-diaminopimelate), which act as spore germinants. Autophosphorylates and phosphorylates EF-G (elongation factor G, fusA); the latter modification is likely necessary for germination in response to peptidoglycan. Another group did not detect phosphorylation of EF-G. PrkC is a substrate in vitro of the cotranscribed phosphatase PrpC, which suggests [...]
  
 
 0.837
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
Server load: low (28%) [HD]
STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.