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
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[Homology]
Score
mdaBNADPH quinone reductase; NADPH-specific quinone reductase. Is most active with quinone derivatives and ferricyanide as electron acceptors. Can use menadione, 1,4-naphthoquinone and 1,4-benzoquinone; Belongs to the oxidoreductase MdaB family. (193 aa)    
Predicted Functional Partners:
ygiN
Quinol monooxygenase; Can oxidize menadiol to menadione.
 
  
 0.965
ycaK
Putative NAD(P)H-dependent oxidoreductase; Protein involved in electron carrier activity; Belongs to the NAD(P)H dehydrogenase (quinone) family.
  
   
 0.900
azoR
NADH-azoreductase, FMN-dependent; Catalyzes the reductive cleavage of azo bond in aromatic azo compounds to the corresponding amines. Requires NADH, but not NADPH, as an electron donor for its activity. The enzyme can reduce ethyl red and methyl red, but is not able to convert sulfonated azo dyes; Belongs to the azoreductase type 1 family.
 
   
 0.850
nfsA
Nitroreductase A, NADPH-dependent, FMN-dependent; Catalyzes the reduction of nitroaromatic compounds using NADPH. Has a broad electron acceptor specificity. Reduces nitrofurazone by a ping-pong bi-bi mechanism possibly to generate a two-electron transfer product. Major oxygen-insensitive nitroreductase in E.coli.
  
  
 0.839
chrR
Chromate reductase, Class I, flavoprotein; Catalyzes the reduction of quinones. Acts by simultaneous two-electron transfer, avoiding formation of highly reactive semiquinone intermediates and producing quinols that promote tolerance of H(2)O(2). Quinone reduction is probably the primary biological role of ChrR (By similarity). Can also reduce toxic chromate to insoluble and less toxic Cr(3+). Catalyzes the transfer of three electrons to Cr(6+) producing Cr(3+) and one electron to molecular oxygen without producing the toxic Cr(5+) species and only producing a minimal amount of reactive [...]
     
 0.801
kefF
Potassium-efflux system ancillary protein for KefC, glutathione-regulated; Regulatory subunit of a potassium efflux system that confers protection against electrophiles. Required for full activity of KefC. Shows redox enzymatic activity, but this enzymatic activity is not required for activation of KefC. Can use a wide range of substrates, including electrophilic quinones, and its function could be to reduce the redox toxicity of electrophilic quinones in parallel with acting as triggers for the KefC efflux system. Belongs to the NAD(P)H dehydrogenase (quinone) family. KefF subfamily.
 
   
 0.763
nfsB
Dihydropteridine reductase, NAD(P)H-dependent, oxygen-insensitive; Reduction of a variety of nitroaromatic compounds using NADH (and to lesser extent NADPH) as source of reducing equivalents; two electrons are transferred. Capable of reducing nitrofurazone, quinones and the anti-tumor agent CB1954 (5-(aziridin-1-yl)-2,4- dinitrobenzamide). The reduction of CB1954 results in the generation of cytotoxic species; Belongs to the nitroreductase family.
  
  
 0.709
cheW
Purine-binding chemotaxis protein; Involved in the transmission of sensory signals from the chemoreceptors to the flagellar motors. It physically bridges CheA to the MCPs (methyl-accepting chemotaxis proteins) to allow regulated phosphotransfer to CheY and CheB.
   
 
 0.648
qseC
Quorum sensing sensory histidine kinase in two-component regulatory system with QseB; Member of a two-component regulatory system QseB/QseC. Activates the flagella regulon by activating transcription of FlhDC. May activate QseB by phosphorylation.
 
 
    0.634
alaA
Glutamate-pyruvate aminotransferase; Involved in the biosynthesis of alanine.
   
    0.538
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
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