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
lpqH19 kDa lipoprotein antigen precursor LpqH; Based on its structure might be involved in ligand transport (By similarity); Belongs to the mycobacterial 19 kDa antigen family. (159 aa)    
Predicted Functional Partners:
lprA
Possible lipoprotein LprA; Constitutes a host TLR2 agonist (toll-like receptor), shown experimentally for human and mouse. In host cells full-length (acylated) protein acts as a TLR2 agonist, inducing human and murine macrophages to produce cytokines, inducing murine dendritic cell maturation and cytokine production and inhibiting antibody processing in murine macrophages. Binds diacylated phosphatidyl-myo-inositol mannosides (PIMs). Does not induce murine macrophage apoptosis or necrosis. Non- acylated protein does not act as a TLR2 agonist. Requires only host TLR2 as receptors to eli [...]
   
  
 0.955
lprG
Conserved lipoprotein LprG; Probably helps membrane protein Rv1410c (P55) transport triacylglycerides (TAG) across the inner cell membrane into the periplasm; TAG probably regulates lipid metabolism and growth regulation. Binds TAG and transfers it between lipid bilayers, probably to the outer membrane in vivo. Binds di- and triacylated phosphatidyl-myo-inositol mannosides (PIMs), and glycolipid lipoglycan modulins lipoarabinomannan (LAM) and lipomannan (LM), facilitating their recognition by TLR2. Binds LM > PIM6 > ManLAM > PI-LAM > PIM2 (mannose-capped LAM and phospho-myo-inositol-ca [...]
   
  
 0.945
pstS1
Periplasmic phosphate-binding lipoprotein PstS1 (PBP-1) (PstS1); Functions in inorganic phosphate uptake, although probably not the main uptake protein under phosphate starvation. Binds phosphate; probably able to bind both H(2)PO(4)(-) and HPO(4)(2-). Part of the ABC transporter complex PstSACB involved in phosphate import (Probable).
   
  
 0.867
lppX
Probable conserved lipoprotein LppX; Might be involved in translocating phthiocerol dimycocerosates (PDIM) from the cell membrane to the outer membrane; PDIM forms part of the cell wall; Belongs to the LppX/LprAFG lipoprotein family.
      
 0.837
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.
   
  
 0.772
lprF
Probable conserved lipoprotein LprF; Might be involved in transporting short diacylated glycolipids to the cell outer membrane (By similarity). Overexpression induces expression of sensor protein kdpD gene at low K(+) concentrations (0 and 250 uM, tested in M.smegatis). Belongs to the LppX/LprAFG lipoprotein family.
   
  
 0.753
lpqN
Rv0583c, (MTV039.21c), len: 228 aa. Probable lpqN,conserved lipoprotein, equivalent to AAA90989.1|U20446|MK35|U20446|MKU20446_1 lipoprotein precursor from Mycobacterium kansasii (225 aa), FASTA scores: opt: 945, E(): 0, (62.7% identity in 228 aa overlap); and similar to others from Mycobacteria e.g. Rv0040c and Rv1016c from Mycobacterium tuberculosis. Contains N-terminal signal sequence and appropriately positioned PS00013 Prokaryotic membrane lipoprotein lipid attachment site.
   
  
 0.687
apa
Alanine and proline-rich secreted protein Apa; A potent antigen in animals immunized with live bacteria, it induces a strong delayed-type hypersensitivity (DTH) in immunized animals. Elicits a mostly Th1 type of T-cell response in healthy humans; induces IFN-gamma production from CD4(+) and CD8(+) cells. Functions as an adhesin, binds to mouse macrophages via mannose residues. Might interact via host CD209. Belongs to the Apa family.
   
  
 0.681
pstS3
Periplasmic phosphate-binding lipoprotein PstS3 (PBP-3) (PstS3) (PHOS1); Functions in inorganic phosphate uptake, is probably the main carrier for phosphate uptake, it is the most highly expressed of the 3 PstS proteins under phosphate starvation. Binds phosphate; probably able to bind both H(2)PO(4)(-) and HPO(4)(2-). Part of the ABC transporter complex PstSACB involved in phosphate import (Probable). Probably plays a role in host phagosome maturation arrest.
   
  
 0.652
narL
Possible nitrate/nitrite response transcriptional regulatory protein NarL; Member of the two-component regulatory system NarS/NarL that regulates genes involved in aerobic nitrate metabolism. Upon phosphorylation by NarS, functions as a transcription regulator by direct binding to promoter regions of target genes together with DevR to regulate their expression during aerobic nitrate metabolism.
   
  
 0.629
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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