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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Cooccurrence
Coexpression
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[Homology]
Score
mesJPossible cell cycle protein MesJ; Ligates lysine onto the cytidine present at position 34 of the AUA codon-specific tRNA(Ile) that contains the anticodon CAU, in an ATP-dependent manner. Cytidine is converted to lysidine, thus changing the amino acid specificity of the tRNA from methionine to isoleucine. Belongs to the tRNA(Ile)-lysidine synthase family. (323 aa)    
Predicted Functional Partners:
hpt
Rv3624c, (MTCY15C10.28), len: 216 aa. Hpt (alternate gene name: hprT), hypoxanthine-guanine phosphoribosyltransferase (but seems to have a 35 aa extension at N-terminus), equivalent to other mycobacterial hypoxanthine-guanine phosphoribosyltransferases e.g. P96794 from Mycobacterium avium (203 aa), FASTA scores: opt: 1136,E(): 1.2e-65, (88.5% identity in 200 aa overlap); and O69537|HPT|ML0214 from Mycobacterium leprae (213 aa), FASTA scores: opt: 1115, E(): 2.8e-64, (81.6% identity in 212 aa overlap). Also similar to others e.g. Q9X8I5|SCE9.12c from Streptomyces coelicolor (187 aa), FA [...]
 
  
 0.998
Rv3626c
Rv3626c, (MTCY15C10.26), len: 350 aa. Conserved hypothetical protein, similar to Q9X8I7|SCE9.14c hypothetical protein from Streptomyces coelicolor (375 aa) FASTA scores: opt: 720, E(): 2.2e-38, (41.55% identity in 361 aa overlap); and shows some similarity to Q9HPS0|VNG1497C hypothetical protein (317 aa) FASTA scores: opt: 226, E(): 4.5e-07, (29.7% identity in 347 aa overlap). Contains neutral zinc metallopeptidases, zinc-binding region signature (PS00142).
  
  
 0.984
Rv3627c
Conserved protein; Carboxypeptidase that cleaves terminal D-alanine from peptidoglycan in the mycobacterial cell wall. May cleave L-Lys-D-Ala and/or D-Ala-D-Ala peptide bonds. Exerts important effects on mycobacterial cell morphology and cell division. Belongs to the peptidase S13 family.
 
  
 0.981
lysX
Lysyl-tRNA synthetase 2 LysX; Catalyzes the production of L-lysyl-tRNA(Lys)transfer and the transfer of a lysyl group from L-lysyl-tRNA(Lys) to membrane-bound phosphatidylglycerol (PG), which produces lysylphosphatidylglycerol (LPG), one of the components of the bacterial membrane with a positive net charge. LPG synthesis contributes to the resistance to cationic antimicrobial peptides (CAMPs) and likely protects M.tuberculosis against the CAMPs produced by competiting microorganisms (bacteriocins). In fact, the modification of anionic phosphatidylglycerol with positively charged L-lys [...]
  
 
 0.890
metS
Methionyl-tRNA synthetase MetS (MetRS) (methionine--tRNA ligase); Is required not only for elongation of protein synthesis but also for the initiation of all mRNA translation through initiator tRNA(fMet) aminoacylation; Belongs to the class-I aminoacyl-tRNA synthetase family. MetG type 2B subfamily.
  
  
 0.866
thiS
Possible protein ThiS; Rv0416, (MTCY22G10.13), len: 68 aa. Possible thiS protein, equivalent to T44740|4154055|CAA22709.1|AL035159|MLCB1450.25 hypothetical protein from Mycobacterium leprae (74 aa), FASTA scores: opt: 303, E(): 2e-18, (71.6% identity in 74 aa overlap). Shows weak similarity with O32583|THIS_ECOLI|THIG1|B3991.1 this protein from Escherichia coli strain K12 (66 aa),FASTA scores: opt: 103, E(): 0.052, (30.9% identity in 68 aa overlap). A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004).
  
 
 0.821
ppa
Inorganic pyrophosphatase; Catalyzes the hydrolysis of inorganic pyrophosphate (PPi) forming two phosphate ions.
     
 0.784
ileS
Isoleucyl-tRNA synthetase IleS; Catalyzes the attachment of isoleucine to tRNA(Ile). As IleRS can inadvertently accommodate and process structurally similar amino acids such as valine, to avoid such errors it has two additional distinct tRNA(Ile)-dependent editing activities. One activity is designated as 'pretransfer' editing and involves the hydrolysis of activated Val-AMP. The other activity is designated 'posttransfer' editing and involves deacylation of mischarged Val-tRNA(Ile) (By similarity).
  
  
 0.760
Rv3224B
Rv3224B, len: 72 aa. Conserved hypothetical protein (possibly gene fragment), similar to C-terminal part of ML0799|AL583919_131 conserved hypothetical protein from Mycobacterium leprae (135 aa), FASTA scores: opt: 229, E(): 2e-09, (60.00% identity in 70 aa overlap). Note that downstream ORF Rv3224A is similar to N-terminus of ML0799. There appears to be no frameshift as sequence is identical in strain CDC1551 and in Mycobacterium bovis. Predicted to be an outer membrane protein (See Song et al., 2008).
  
  
 0.693
pth
Probable peptidyl-tRNA hydrolase Pth; The natural substrate for this enzyme may be peptidyl-tRNAs which drop off the ribosome during protein synthesis. Belongs to the PTH family.
  
  
 0.692
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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