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
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Score
sigKAlternative RNA polymerase sigma factor SigK; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Extracytoplasmic function (ECF) sigma factors are held in an inactive form by an anti-sigma factor until released by regulated intramembrane proteolysis. Sigma-K controls genes such as mpt70 and mpt83. (187 aa)    
Predicted Functional Partners:
rskA
Anti-sigma factor RskA (regulator of sigma K); An anti-sigma factor for extracytoplasmic function (ECF) sigma factor SigK. ECF sigma factors are held in an inactive form by an anti-sigma factor until released by regulated intramembrane proteolysis (RIP). RIP occurs when an extracytoplasmic signal triggers a concerted proteolytic cascade to transmit information and elicit cellular responses. The membrane-spanning regulatory substrate protein is first cut extracytoplasmically (site-1 protease, S1P), then within the membrane itself (site-2 protease, S2P, Rip1), while cytoplasmic proteases [...]
 
 
 0.999
mpt70
Major secreted immunogenic protein Mpt70; Rv2875, (MTCY274.06), len: 193 aa. Mpt70 (alternate gene name: mpb70), major secreted immunogenic protein MPT70 precursor (see citations below). Also similar to downstream ORF Q10790|MP83_MYCTU|MPT83|MPB83|Rv2873|MT2940|MTCY274.04 cell surface lipoprotein MPT83 precursor (lipoprotein P23) (220 aa), FASTA scores: opt: 806, E(): 1.2e-40, (70.25% identity in 185 aa overlap). Belongs to the MPT70 / MPT83 family. Generally found as a monomer; homodimer in culture fluids.
 
  
 0.914
mpt83
Cell surface lipoprotein Mpt83 (lipoprotein P23); Recombinant, non-modified protein stimulates secretion of cytokines (TNF-alpha, IL-6 and IL-12p40) by mouse macrophage cell lines in a TLR2-dependent fashion, which leads to increased host innate immunity responses against the bacterium. Serves as a strong human and mouse antigen T cell antigen during M.tuberculosis infection, inducing strong IFN-gamma expression.
 
  
 0.911
Rv0449c
Rv0449c, (MTV037.13c), len: 439 aa. Conserved hypothetical protein, some similarity with several hypothetical proteins and various enzymes e.g. AAK24569.1|AE005927 amine oxidase, flavin-containing from Caulobacter crescentus (454 aa); BAB02771.1|AB023036 mycolic acid methyl transferase-like protein from Arabidopsis thaliana (842 aa); BAB01742.1|AP000374 protein which contains similarity to cyclopropane fatty acid synthase from Arabidopsis thaliana (793 aa); etc. Has hydrophobic stretch at N-terminus.
 
  
 0.897
sigM
Possible alternative RNA polymerase sigma factor SigM; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Extracytoplasmic function (ECF) sigma factors are held in an inactive form by an anti-sigma factor (RsaM, AC L7N5D7) until released by regulated intramembrane proteolysis (Probable). This sigma factor is required for the synthesis of surface or secreted molecules.
  
  
 0.884
Rv0448c
Rv0448c, (MTV037.12c), len: 221 aa. Conserved hypothetical protein, similar to other hypothetical proteins e.g. Z74841|BOD5A2_1 from B. oleracea (283 aa),FASTA scores: opt: 257, E(): 1.4e-10, (32.0% identity in 197 aa overlap); etc. Some similarity to U15183|MLU15183_38 from Mycobacterium leprae (82 aa), FASTA scores: opt: 134,E(): 0.014, (71.0% identity in 31 aa overlap).
 
  
 0.828
Rv0446c
Rv0446c, (MTV037.10c), len: 256 aa. Possible conserved transmembrane protein, similar at N-terminus to U1740AF|U15183|MLU15183_40 from Mycobacterium leprae (117 aa), FASTA scores: opt: 175, E(): 2.5e-05, (62.5% identity in 40 aa overlap); and at C-terminus to AL021529|SC10A5_3 from Streptomyces coelicolor (226 aa), FASTA scores: opt: 207, E(): 9.8e-07, (34.2% identity in 114 aa overlap). Also similar to others hypothetical proteins e.g. AAK04680.1|AE006291_14|AE006291 hypothetical protein from Lactococcus lactis subsp. lactis (257 aa).
 
    0.763
sigC
RNA polymerase sigma factor, ECF subfamily, SigC; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Extracytoplasmic function (ECF) sigma factors are usually held in an inactive form by an anti-sigma factor until released by regulated intramembrane proteolysis; this sigma factor does not seem to have a cognate anti-sigma factor however. It has been suggested that the sigma domains 2 and 4 may interact via polar residues in this protein to autoregulate. Positively regulates expression of a small regulon [...]
  
  
 0.754
ufaA1
Tuberculostearic acid methyltransferase UfaA1; Involved in the biosynthesis of the tuberculostearic acid (10-methylstearic-acid or TSA), a constituent lipid of the mycobacterial cell wall. Catalyzes the transfer of the methyl group from S-adenosyl-L-methionine (SAM) to the double bond of oleic acid in phosphatidylethanolamine or phosphatidylcholine to produce TSA. Belongs to the CFA/CMAS family.
 
  
 0.749
sigH
Alternative RNA polymerase sigma-E factor (sigma-24) SigH (RPOE); Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Extracytoplasmic function (ECF) sigma factors are held in an inactive form by a cognate anti-sigma factor (RshA) until released. This sigma factor is involved in heat shock and oxidative stress responses; it positively regulates the expression of itself, sigE, sigB and a number of transcriptional regulators as well as other effectors of heat and oxidative stress, leading to direct and ind [...]
  
  
 0.749
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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