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
mprAResponse regulator MprA; Member of the two-component regulatory system MprB/MprA which contributes to maintaining a balance among several systems involved in stress resistance and is required for establishment and maintenance of persistent infection in the host. Functions as a transcriptional regulator that recognizes a 19-bp nucleotide motif comprizing two loosely conserved 8-bp direct DNA-binding motif repeats separated by a 3-bp spacer region. MprB/MprA is involved in regulation of numerous stress-responsive genes, including up-regulation of two sigma factors, sigE and sigB as well [...] (228 aa)    
Predicted Functional Partners:
mprB
Two component sensor kinase MprB; Member of the two-component regulatory system MprB/MprA which contributes to maintaining a balance among several systems involved in stress resistance and is required for establishment and maintenance of persistent infection in the host. In response to environmental signals MprB acts as both a membrane-associated protein kinase that undergoes autophosphorylation and subsequently transfers the phosphate to MprA, and a protein phosphatase that dephosphorylates phospho-MprA. MprB/MprA is involved in regulation of numerous stress-responsive genes, includin [...]
 
 0.999
senX3
Putative two component sensor histidine kinase SenX3; Probably forms part of a two-component regulatory system SenX3/RegX3. Phosphorylates RegX3 (Probable).
 
 0.904
prrB
Two component sensor histidine kinase PrrB; Member of the two-component regulatory system PrrB/PrrA that is involved specifically in early intracellular multiplication of Mycobacterium and is essential for its viability. Functions as a sensor protein kinase which is autophosphorylated at a histidine residue and transfers its phosphate group to the conserved aspartic acid residue in the regulatory domain of PrrA. In turn, PrrA binds to the upstream promoter regions of target genes including itself to positively regulate their expression.
 
 
 0.901
Rv0600c
Two component sensor kinase [second part]; Member of the three-protein two-component system HK1/HK2/TcrA. Kinase that binds ATP and catalyzes the transfer of a phosphoryl group from ATP to HK2.
 
 
 0.896
trcS
Rv1032c, (MTCY10G2.17), len: 509 aa. TrcS, two component sensor histidine kinase protein (see citations below), similar to YV16_MYCLE|P54883 probable sensor-like histidine kinase from Mycobacterium leprae (443 aa), FASTA scores: opt: 392, E(): 3.8e-18, (31.7% identity in 334 aa overlap). Note that in vitro autophosphorylation of TrcS requires the presence of Mn2+ or Ca2+ as a divalent cation cofactor and subsequent transphosphorylation of TrcR is evident in the presence of TrcS-phosphate and Ca2+.
 
 
 0.883
tcrY
Possible two component sensor kinase TcrY; Member of the two-component regulatory system TcrY/TcrX. Activates TcrX by phosphorylation.
 
 0.859
moaB2
MoCF_biosynth domain-containing protein; Rv0984, (MTV044.12), len: 181 aa. Possible moaB2,pterin-4-alpha-carbinolamine dehydratase, highly similar to NP_301253.1|NC_002677 putative molybdenum cofactor biosynthesis protein from Mycobacterium leprae (181 aa),FASTA score: (92.3% identity in 181 aa overlap). Also similar to others e.g. CAB59675.1|AL132674 molybdenum cofactor biosynthesis protein from Streptomyces coelicolor (179 aa); Q56208|MOCB_SYNP7 molybdenum cofactor biosynthesis protein CB from Synechococcus sp. (319 aa),FASTA score: (37.3% identity in 142 aa overlap); C-terminus of N [...]
  
  
 0.840
phoR
Rv0758, (MTCY369.03), len: 485 aa. Possible phoR,two component system response phosphate sensor kinase membrane-associated, highly similar to various sensor kinases e.g. CAC32361.1|AL583945 putative two component system histidine kinase from Streptomyces coelicolor (524 aa); NP_349365.1|NC_003030 Membrane-associated sensory histidine kinase with HAMP domain from Clostridium acetobutylicum (482 aa); and similar to phoP proteins e.g. NP_372216.1|NC_002758 alkaline phosphatase synthesis sensor protein from Staphylococcus aureus (554 aa); P23545|PHOR_BACSU alkaline phosphatase synthesis se [...]
 
 0.833
mtrB
Two component sensory transduction histidine kinase MtrB; Member of the two-component regulatory system MtrA/MtrB. Probably functions as a membrane-associated protein kinase that phosphorylates MtrA in response to environmental signals. Autophosphorylates and transfers phosphate to MtrA in vitro. Overexpression of MtrA alone decreases bacterial virulence in mouse infection; co-expression of MtrA and MtrB restores normal bacterial growth, suggesting that bacterial growth in macrophages requires an optimal ratio of MtrB to MtrA. Probably plays a role in cell division.
 
 0.829
sigB
RNA polymerase sigma factor SigB; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. A non-essential principal sigma factor that responds to cell envelope stress and hypoxia. Controls a regulon of about 40 genes, with another 100 genes expression being altered during SDS stress and about 50 gene being altered during diamide (oxidative) stress.
   
 
 0.799
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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