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:
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Gene Fusion
Cooccurrence
Coexpression
Experiments
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Textmining
[Homology]
Score
levRTranscriptional regulator (NifA/NtrC family); Involved in positive regulation of the levanase operon which comprises the levDEFG genes for a fructose PTS system, and sacA for levanase. (935 aa)    
Predicted Functional Partners:
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.
 
 
 
 0.985
levD
Phosphotransferase system (PTS) fructose-specific enzyme IIA component; The phosphoenolpyruvate-dependent sugar phosphotransferase system (sugar PTS), a major carbohydrate active transport system, catalyzes the phosphorylation of incoming sugar substrates concomitantly with their translocation across the cell membrane. The enzyme II LevDE PTS system is involved in fructose transport.
 
  
 0.967
levE
Phosphotransferase system (PTS) fructose-specific enzyme IIB component; The phosphoenolpyruvate-dependent sugar phosphotransferase system (sugar PTS), a major carbohydrate active -transport system, catalyzes the phosphorylation of incoming sugar substrates concomitantly with their translocation across the cell membrane. The enzyme II LevDE PTS system is involved in fructose transport.
 
  
 0.950
licT
Transcriptional antiterminator (BglG family); Mediates positive regulation of the glucanase operon (licST) by functioning as an antiterminator factor of transcription. Prevents termination at terminator lic-t; Belongs to the transcriptional antiterminator BglG family.
  
   
 0.903
mtlF
Phosphotransferase system (PTS) mannitol-specific enzyme IIA component; The phosphoenolpyruvate-dependent sugar phosphotransferase system (sugar PTS), a major carbohydrate active transport system, catalyzes the phosphorylation of incoming sugar substrates concomitantly with their translocation across the cell membrane. The enzyme II CmtAB PTS system is involved in D-mannitol transport.
      
 0.890
licR
Transcriptional activator of the lichenan operon; Positive regulator of the licABCH operon; Belongs to the transcriptional antiterminator BglG family.
 
  
 0.889
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.
     
 0.868
manR
Transcriptional antiterminator; Positively regulates the expression of the mannose operon that consists of three genes, manP, manA, and yjdF, which are responsible for the transport and utilization of mannose. Also activates its own expression.
 
   
 0.861
levF
Phosphotransferase system (PTS) fructose-specific enzyme IIC component; The phosphoenolpyruvate-dependent sugar phosphotransferase system (PTS), a major carbohydrate active -transport system, catalyzes the phosphorylation of incoming sugar substrates concomitant with their translocation across the cell membrane. This system is involved in fructose transport.
 
  
 0.844
levG
Phosphotransferase system (PTS) fructose-specific enzyme IID component; The phosphoenolpyruvate-dependent sugar phosphotransferase system (PTS), a major carbohydrate active -transport system, catalyzes the phosphorylation of incoming sugar substrates concomitant with their translocation across the cell membrane. This system is involved in fructose transport.
 
  
 0.835
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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