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
pspARegulatory protein for phage-shock-protein operon; The phage shock protein (psp) operon (pspABCDE) may play a significant role in the competition for survival under nutrient- or energy-limited conditions. PspA negatively regulates expression of the pspABCDE promoter and of pspG through negative regulation of the psp- specific transcriptional activator PspF. Is also required for membrane integrity, efficient translocation and maintenance of the proton motive force. Belongs to the PspA/IM30 family. (222 aa)    
Predicted Functional Partners:
pspF
Psp operon transcriptional activator; Transcriptional activator for the phage shock protein (psp) operon (pspABCDE) and pspG gene.
 
 
 0.999
pspB
Psp operon transcription co-activator; The phage shock protein (psp) operon (pspABCDE) may play a significant role in the competition for survival under nutrient- or energy-limited conditions. PspB is involved in transcription regulation; Belongs to the PspB family.
 
 0.999
pspC
Psp operon transcription co-activator; The phage shock protein (psp) operon (pspABCDE) may play a significant role in the competition for survival under nutrient- or energy-limited conditions. PspC is involved in transcription regulation; Belongs to the phageshock PspC family.
 
 
 0.999
pspD
Peripheral inner membrane phage-shock protein; The phage shock protein (psp) operon (pspABCDE) may play a significant role in the competition for survival under nutrient- or energy-limited conditions.
  
  
 0.994
pspG
Phage shock protein G; Effector of the phage shock response.
   
  
 0.869
pspE
Thiosulfate:cyanide sulfurtransferase (rhodanese); The phage shock protein (psp) operon (pspABCDE) may play a significant role in the competition for survival under nutrient- or energy-limited conditions. PspE catalyzes the sulfur-transfer reaction from thiosulfate to cyanide, to form sulfite and thiocyanate. Also able to use dithiol (dithiothreitol) as an alternate sulfur acceptor. Also possesses a very low mercaptopyruvate sulfurtransferase activity.
  
  
 0.857
arcB
Aerobic respiration control sensor protein ArcB; Member of the two-component regulatory system ArcB/ArcA. Sensor-regulator protein for anaerobic repression of the arc modulon. Activates ArcA via a four-step phosphorelay. ArcB can also dephosphorylate ArcA by a reverse phosphorelay involving His-717 and Asp-576.
    
 
 0.800
yjfI
DUF2170 family protein.
  
  
 0.724
cpxP
Inhibitor of the cpx response; Acts as an auxiliary protein in the Cpx two-component envelope stress response system, helping modulate the Cpx response systems response to some inducers. Binds the periplasmic domain of sensor histidine kinase CpxA, inhibiting induction of the Cpx envelope stress response in the absence of inducer; overexpression decreases Cpx pathway activity. Some periplasmic stimulii (shown for P pili subunit PapE and probably 0.3 M NaCl) increase CpxP's susceptibility to DegP, leading to CpxP degradation, inducing the Cpx pathway. Aids in combating extracytoplasmic [...]
      
 0.502
sppA
Protease IV (signal peptide peptidase); Digests cleaved signal peptides in vitro, its in vivo function is unknown. This activity is necessary to maintain proper secretion of mature proteins across the membrane. Belongs to the peptidase S49 family.
 
  
 0.501
Your Current Organism:
Escherichia coli K12
NCBI taxonomy Id: 511145
Other names: E. coli str. K-12 substr. MG1655, Escherichia coli MG1655, Escherichia coli str. K-12 substr. MG1655, Escherichia coli str. K12 substr. MG1655, Escherichia coli str. MG1655, Escherichia coli strain MG1655
Server load: low (32%) [HD]
STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.