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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empty nodes:
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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gene co-occurrence
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hssRDNA-binding response regulator, putative; Member of the two-component regulatory system HssS/HssR involved in intracellular heme homeostasis and tempering of staphylococcal virulence. Phosphorylated HssR binds to a direct repeat sequence within hrtAB promoter and activates the expression of hrtAB, an efflux pump, in response to extracellular heme, hemin, hemoglobin or blood (By similarity). (224 aa)    
Predicted Functional Partners:
hssS
Sensor histidine kinase, putative; Member of the two-component regulatory system HssS/HssR involved in intracellular heme homeostasis and tempering of staphylococcal virulence. HssS functions as a heme sensor histidine kinase which is autophosphorylated at a histidine residue and transfers its phosphate group to an aspartate residue of HssR. HssR/HssS activates the expression of hrtAB, an efflux pump, in response to extracellular heme, hemin, hemoglobin or blood (By similarity).
 
 
 0.992
hrtA
Conserved hypothetical protein; Part of the ABC transporter complex hrt involved in hemin import. Responsible for energy coupling to the transport system (By similarity).
     
 0.916
hrtB
Permease, putative domain protein; Part of the ABC transporter complex hrt involved in hemin import. Responsible for the translocation of the substrate across the membrane (By similarity).
     
 0.912
arlS
Conserved hypothetical protein; Member of the two-component regulatory system ArlS/ArlR involved in the regulation of adhesion, autolysis, multidrug resistance and virulence. ArlS probably functions as a sensor protein kinase which is autophosphorylated at a histidine residue and transfers its phosphate group to ArlR. ArlS/ArlR affects expression of the multidrug resistance transporter norA and interacts with both Agr (virulence accessory gene regulator) (negatively) and SarA (staphylococcal accessory regulator) (positively) to modulate several virulence factor genes, including ssp (se [...]
 
 
 0.873
saeS
Sensor histidine kinase SaeS, 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 membrane-associated protein kinase that upon sensing the appropriate signal, autophosphorylates and in turn activates the cytosolic response regulator SaeR. 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 downstr [...]
  
   0.862
graS
Conserved hypothetical protein; Member of the two-component regulatory system GraR/GraS involved in resistance against cationic antimicrobial peptides (CAMPs). Functions as a sensor protein kinase which phosphorylates GraR through the auxiliary protein GraX. In turn, GraR up-regulates many genes such as adhesins, exoproteins, transporters, toxins, and proteins involved in cell wall synthesis. Down-regulates the expression of many genes involved in RNA and amino acid synthesis or glycolysis. Confers resistance to vancomycin, polymyxin B, lysozyme and LL-37.
 
 
 0.846
ABD30867.1
Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase domain protein.
  
   0.766
ABD31946.1
Sensor histidine kinase, putative.
 
   0.755
srrB
Staphylococcal respiratory response protein SrrB, putative; Member of the two-component regulatory system SrrA/SrrB, which is involved in the global regulation of staphylococcal virulence factors in response to environmental oxygen levels as well as biofilm formation. Plays also an essential role in host-derived nitric oxide resistance by regulating hmp/flavohemoglobin, an enzyme that detoxifies nitric oxide by converting it to nitrate. Functions as a sensor protein kinase which is autophosphorylated at a histidine residue and transfers its phosphate group to SrrA. In turn, SrrA binds [...]
  
   0.737
sigA
RNA polymerase sigma factor, putative; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is the primary sigma factor during exponential growth.
    
   0.508
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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