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
qcrBProbable ubiquinol-cytochrome C reductase QcrB (cytochrome B subunit); Cytochrome b subunit of the cytochrome bc1 complex, an essential component of the respiratory electron transport chain required for ATP synthesis. The bc1 complex catalyzes the oxidation of ubiquinol and the reduction of cytochrome c in the respiratory chain. The bc1 complex operates through a Q-cycle mechanism that couples electron transfer to generation of the proton gradient that drives ATP synthesis. The cytochrome b subunit contains two ubiquinol reactive sites: the oxidation (QP) site and the reduction (QN) site. (549 aa)    
Predicted Functional Partners:
ctaE
Rv2193, (MTCY190.04), len: 203 aa. Probable ctaE,cytochrome c oxidase polypeptide III (cox3), with strong similarity to others e.g. COX3_SYNY3|Q06475 (29.8% identity in 225 aa overlap).
 
 
 0.999
qcrC
Probable ubiquinol-cytochrome C reductase QcrC (cytochrome C subunit); Cytochrome b subunit of the cytochrome bc1 complex, an essential component of the respiratory electron transport chain required for ATP synthesis. The bc1 complex catalyzes the oxidation of ubiquinol and the reduction of cytochrome c in the respiratory chain. The bc1 complex operates through a Q-cycle mechanism that couples electron transfer to generation of the proton gradient that drives ATP synthesis.
 
 0.999
qcrA
Probable rieske iron-sulfur protein QcrA; Iron-sulfur subunit of the cytochrome bc1 complex, an essential component of the respiratory electron transport chain required for ATP synthesis. The bc1 complex catalyzes the oxidation of menaquinol and the reduction of cytochrome c in the respiratory chain. The bc1 complex operates through a Q-cycle mechanism that couples electron transfer to generation of the proton gradient that drives ATP synthesis.
 
 0.999
ctaF
Possible conserved integral membrane protein; Part of cytochrome c oxidase, its function is unknown. Belongs to the cytochrome c oxidase bacterial subunit CtaF family.
 
 
 0.999
ctaC
Probable transmembrane cytochrome C oxidase (subunit II) CtaC; Subunits I and II form the functional core of the enzyme complex. Electrons originating in cytochrome c are transferred via heme a and Cu(A) to the binuclear center formed by heme a3 and Cu(B) (By similarity).
 
 
 0.999
Rv2876
Rv2876, (MTCY274.07), len: 104 aa. Possible conserved transmembrane protein, equivalent (but longer 16 aa) to Q9CBU2|ML1584 possible conserved membrane protein from Mycobacterium leprae (84 aa), FASTA scores: opt: 444,E(): 8.3e-26, (73.85% identity in 88 aa overlap). A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004).
   
   0.999
ctaD
Probable cytochrome C oxidase polypeptide I CtaD (cytochrome AA3 subunit 1); Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Subunits 1-3 form the functional core of the enzyme complex. CO I is the catalytic subunit of the enzyme. Electrons originating in cytochrome c are transferred via the copper A center of subunit 2 and heme A of subunit 1 to the bimetallic center formed by heme A3 and copper B (By similarity).
 
 
 0.999
sodC
Periplasmic superoxide dismutase [Cu-Zn] SodC; Destroys radicals which are normally produced within the cells and which are toxic to biological systems. May play a role in favoring mycobacterial survival in phagocytes (By similarity).
   
 
 0.997
pepR
Rv2782c, (MTV002.47c), len: 438 aa. Probable pepR,protease/peptidase, equivalent to O32965|YR82_MYCLE|ML0855|MLCB22.26c hypothetical zinc protease from Mycobacterium leprae (445 aa), FASTA scores: opt: 2346, E(): 4.3e-146, (84.3% identity in 421 aa overlap). Also highly similar to others e.g. O86835|YA12_STRCO|SC9A10.02 from Streptomyces coelicolor (459 aa), FASTA scores: opt: 1394, E(): 1.1e-83, (51.9% identity in 416 aa overlap); Q04805|YMXG_BACSU|YMXG from Bacillus subtilis (409 aa), FASTA scores: opt: 1014, E(): 7.9e-59, (37.55% identity in 410 aa overlap); Q9KA85|BH2405 from Bacil [...]
   
 0.989
nuoM
Probable NADH dehydrogenase I (chain M) NUOK (NADH-ubiquinone oxidoreductase chain M); NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be menaquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient (By similarity).
  
 
 0.988
Your Current Organism:
Mycobacterium tuberculosis H37Rv
NCBI taxonomy Id: 83332
Other names: M. tuberculosis H37Rv, Mycobacterium sp. H37Rv, Mycobacterium tuberculosis str. H37Rv, Mycobacterium tuberculosis strain H37Rv
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