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
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Experiments
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[Homology]
Score
hptRResponse regulator receiver domain protein; Member of the two-component regulatory system HptS/HptR that regulates genes involved in hexose phosphate transport system in response to changes in extracellular phosphate sources. Activates uhpT expression to facilitate glucose-6- phosphate/G6P utilization by directly binding to its promoter. Antagonizes CcpA-dependent transcription of a subset of CcpA-regulated genes involved in antibiotic susceptibility. (252 aa)    
Predicted Functional Partners:
hptS
Conserved hypothetical protein; Member of the two-component regulatory system HptS/HptR that regulates genes involved in hexose phosphate transport system in response to changes in extracellular phosphate sources. May act as a sensor protein kinase which is autophosphorylated at a histidine residue and transfers its phosphate group to the conserved aspartic acid residue in the regulatory domain of HptS. In turn, HptS antagonizes CcpA-dependent transcription of a subset of CcpA-regulated genes involved in antibiotic susceptibility.
 
 
 0.987
ABD29364.1
Lipoprotein, putative.
 
     0.909
ABD31040.1
Sensor histidine kinase, putative.
 
  
  0.721
kdpE
DNA-binding response regulator, putative; Member of the two-component regulatory system KdpD/KdpE that regulates the transcription of a series of virulence factors through sensing external K(+) concentrations. Regulates also capsular polysaccharide synthesis. Upon phosphorylation by KpdD, functions as a transcriptional regulator by direct binding to promoter regions of target genes including spa, hla, aur and geh. Represses the transcription of kdpFABC operon.
  
  
 0.629
lytS
Two-component sensor histidine kinase, putative; Member of the two-component regulatory system LytR/LytS that regulates genes involved in autolysis, programmed cell death, biofilm formation and cell wall metabolism. Participates also in sensing and responding to host defense cationic antimicrobial peptides (CAMPs). Functions as a sensor protein kinase which is autophosphorylated at a histidine residue and transfers its phosphate group to the conserved aspartic acid residue in the regulatory domain of LytR. In turn, LytR binds to the upstream promoter regions of target genes including l [...]
 
 
 0.592
kdpD
Sensor protein KdpD, putative; Member of the two-component regulatory system KdpD/KdpE that regulates the transcription of a series of virulence factors through sensing external K(+) concentrations. Regulates also capsular polysaccharide production. May function as a membrane-associated protein kinase that phosphorylates KdpE in response to environmental signals. In turn, KpdE functions as a transcriptional regulator by direct binding to promoter regions of target genes including spa, hla, aur and geh.
 
  
 0.587
saeR
Response regulator, putative; Member of the two-component regulatory system SaeR/SaeS involved in the regulation of staphylococcal virulence factors in a strain-dependent fashion. Probably functions as a transcriptional regulator via a specific DNA-binding domain, recognizing motifs near the promoter sequences of target genes. SaeR/SaeS activates the expression of exoproteins involved in adhesion and invasion of host cells, including hemolysins (Hla, Hlb), Coa, DNase, Spa and cell wall- associated proteins (Emp, Eap, FnbA). Acts probably downstream of the Agr system in the regulatory c [...]
  
  
 0.569
vraR
DNA-binding response regulator VraR, putative; Member of the two-component regulatory system VraS/VraR involved in the control of the cell wall peptidoglycan biosynthesis. Upon cellular stress, the histidine kinase VraS transfers the phosphoryl group onto VraR. Upon phosphorylation, VraR dimerizes at the N-terminal domain. In turn, phosphorylation-induced dimerization expand and enhance the VraR binding to its own promoter leading to increased expression and subsequent modulation of as many as 40 genes, which ultimately constitute the S.aureus response to cell wall damage. In addition, [...]
  
  
 0.552
ABD29244.1
Conserved hypothetical protein.
  
  
  0.517
lytR
Two-component response regulator, putative; Member of the two-component regulatory system LytR/LytS that regulates genes involved in autolysis, programmed cell death, biofilm formation and cell wall metabolism. Participates also in sensing and responding to host defense cationic antimicrobial peptides (HDPs). Upon phosphorylation by LytS, functions as a transcription regulator by direct binding to promoter regions of target genes including lrgA and lrgB, to positively regulate their expression.
  
  
 0.507
Your Current Organism:
Staphylococcus aureus
NCBI taxonomy Id: 93061
Other names: S. aureus subsp. aureus NCTC 8325, Staphylococcus aureus NCTC 8325, Staphylococcus aureus subsp. aureus NCTC 8325, Staphylococcus aureus subsp. aureus str. NCTC 8325, Staphylococcus aureus subsp. aureus strain NCTC 8325
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