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.
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query proteins and first shell of interactors
white nodes:
second shell of interactors
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proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
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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.
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sarRConserved hypothetical protein; Negative regulator of sarA transcription at late exponential and stationary growth phases. It contributes to the modulation of target genes downstream of the sarA regulatory cascade. Also, positively regulates expression of primary transcripts RNAII and RNAIII generated by agr (virulence accessory gene regulator) locus. (115 aa)    
Predicted Functional Partners:
sarZ
Conserved hypothetical protein; Activates transcription of virulence factors alpha- and beta hemolysin genes (hla and hlb). Also, activates RNAIII expression, a central regulator transcribed from the agr locus.
      
 0.680
sarX
Conserved hypothetical protein; Involved in the regulation of virulence genes. Acts as a repressor of the agr locus and consequently targets genes regulated by the agr system such as sspA, hla and hlb. Binds directly to the agr promoter region.
      
 0.657
sarV
Conserved hypothetical protein; Part of the pathway by which MgrA and SarA control autolysis. Involved in regulation of virulence and autolysis genes such as hla, splA, aur, scp, lrgB, scdA and atl. May also act as an activator for the expression of regulatory genes agr, lytSR and ArlRS.
      
 0.644
sarA
Staphylococcal accessory regulator T, putative; Global regulator with both positive and negative effects that controls expression of several virulence factors and biofilm formation process in a cell density-dependent manner. In a strain-dependent manner plays a role in multidrug resistance mechanism. Is required for transcription of primary transcripts RNAII and RNAIII generated by agr (virulence accessory gene regulator) locus. Acts as a transcriptional activator of the genes encoding, among others, for fibronectin binding proteins (fnbA and fnbB), hemolysins (hla, hld, hlgB and hlgC) [...]
      
 0.548
sarT
Staphylococcal accessory regulator T, putative; Transcriptional regulator acting as an intermediary between major regulators sarA and agr and virulence genes. Represses alpha- hemolysin (hla) gene expression. Down-regulates agr RNAIII expression by repressing sarU, a positive activator of agr expression. Up- regulates sarS, which induces the expression of the cell wall- associated protein A (spa).
      
 0.548
sarU
Conserved hypothetical protein; Positive regulator of RNAII and RNAIII in a cell density- dependent manner. It can contribute to the expression of virulence genes controlled by agr. May also regulate target genes via an agr- independent pathway.
      
 0.531
sspA
Glutamyl endopeptidase precursor, putative; Preferentially cleaves peptide bonds on the carboxyl-terminal side of aspartate and glutamate. Along with other extracellular proteases it is involved in colonization and infection of human tissues. Required for proteolytic maturation of thiol protease SspB and inactivation of SspC, an inhibitor of SspB. It is the most important protease for degradation of fibronectin-binding protein (FnBP) and surface protein A, which are involved in adherence to host cells. May also protect bacteria against host defense mechanism by cleaving the immunoglobu [...]
      
 0.510
codY
Conserved hypothetical protein; DNA-binding protein that represses the expression of many genes that are induced as cells make the transition from rapid exponential growth to stationary phase. It is a GTP-binding protein that senses the intracellular GTP concentration as an indicator of nutritional limitations. At low GTP concentration it no longer binds GTP and stop to act as a transcriptional repressor; Belongs to the CodY family.
      
 0.503
mgrA
Conserved hypothetical protein; Regulatory protein involved in autolytic activity, multidrug resistance and virulence. Controls autolysis by inactivating LytM, LytN (autolysins) and SarV (autolysis activator) and activating ArlRS, LrgAB and LytSR (autolysis inhibitors). Acts as a dual regulator for resistance to multiple drugs by inactivating NorB and tet38 and activating NorA. Positively controls the expression of virulence accessory gene regulator (agr) to promote alpha-hemolysin (hla) transcription and down-regulates staphylococcal accessory regulator (sarS), leading to repression o [...]
      
 0.480
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 [...]
      
 0.447
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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