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
vapB21Possible antitoxin VapB21; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in M.smegmatis neutralizes the effect of cognate toxin VapC21. (88 aa)    
Predicted Functional Partners:
vapC21
Possible toxin VapC21; Toxic component of a type II toxin-antitoxin (TA) system. An RNase (By similarity). Upon expression in M.smegmatis inhibits colony formation. Its toxic effect is neutralized by coexpression with cognate antitoxin VapB21; Belongs to the PINc/VapC protein family.
  
   0.979
vapC42
Possible toxin VapC42. Contains PIN domain; Toxic component of a type II toxin-antitoxin (TA) system. An RNase. Its cognate antitoxin is VapB42 (By similarity). Belongs to the PINc/VapC protein family.
  
    0.756
vapB42
Possible antitoxin VapB42; Possibly the antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin is VapC42.
  
    0.755
hsdS
Rv2761c, (MTV002.26c), len: 364 aa. Possible hsdS,type I restriction/modification system specificity determinant (S protein), similar in part to other hsdS protein (S proteins) e.g. Q9P9X9|XF2741 from Xylella fastidiosa (412 aa), FASTA scores: opt: 252, E(): 7.4e-09,(24.95% identity in 401 aa overlap); N-terminus of Q9RC12 type I S-subunit from Lactobacillus delbrueckii (subsp. lactis) (389 aa), FASTA scores: opt: 232, E(): 1.4e-07,(28.1% identity in 185 aa overlap); N-terminus of P72419|sty|SBLI from Salmonella typhimurium (434 aa), FASTA scores: opt: 221, E(): 8e-07, (28.45% identity [...]
  
    0.735
Rv2762c
Rv2762c, (MTV002.27c), len: 139 aa. Conserved hypothetical protein, similar to C-terminus of hypothetical proteins: Q9A380|CC3324 from Caulobacter crescentus (409 aa), FASTA scores: opt: 181, E(): 9.8e-05, (43.55% identity in 101 aa overlap); Q98KQ4|MLR1373 from Rhizobium loti (Mesorhizobium loti) (399 aa), FASTA scores: opt: 174, E(): 0.00028, (46.35% identity in 82 aa overlap); and Q9HZZ9|PA2844 from Pseudomonas aeruginosa (402 aa), FASTA scores: opt: 158, E(): 0.0033, (40.0% identity in 80 aa overlap).
  
    0.710
vapC38
Possible toxin VapC38. Contains PIN domain; Toxic component of a type II toxin-antitoxin (TA) system. An RNase. Its cognate antitoxin is VapB38 (By similarity).
   
  
 0.683
hsdM
Rv2756c, (MTV002.21c), len: 540 aa. Possible hsdM,type I restriction/modification system DNA methylase (M protein), highly similar to others e.g. Q9P9X8|XF2742 from Xylella fastidiosa (519 aa), FASTA scores: opt: 1613, E(): 1.9e-96, (52.3% identity in 543 aa overlap); O34139|HSDM from Klebsiella pneumoniae (539 aa), FASTA scores: opt: 1267, E(): 4.4e-74, (45.9% identity in 549 aa overlap); P72418|sty|SBLI|HSDM from Salmonella typhimurium (539 aa),FASTA scores: opt: 1263, E(): 8e-74, (45.7% identity in 549 aa overlap); etc. Possible alternative start site (GTG) overlapping with terminat [...]
  
    0.618
hsdS.1
Rv2755c, (MTV002.20c), len: 91 aa. Possible hsdS.1,fragment of type I restriction/modification system specificity determinant (S protein), similar to the N-terminus of other hsdS proteins e.g. O34140|HSDS from Klebsiella pneumoniae (439 aa), FASTA scores: opt: 303,E(): 2.1e-13, (46.65% identity in 90 aa overlap); P72419|sty|SBLI from Salmonella typhimurium (434 aa), FASTA scores: opt: 278, E(): 1.1e-11, (47.65% identity in 86 aa overlap); and Q9P9X9|XF2741 from Xylella fastidiosa (412 aa), FASTA scores: opt: 144, E(): 0.015, (31.7% identity in 82 aa overlap). Also some similarity with [...]
  
    0.586
dfrA
Dihydrofolate reductase DfrA (DHFR) (tetrahydrofolate dehydrogenase); Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, and for DNA precursor synthesis; Belongs to the dihydrofolate reductase family.
  
    0.530
vapC9
Possible toxin VapC9; Toxic component of a type II toxin-antitoxin (TA) system. An RNase. The cognate antitoxin is VapB9 (By similarity). Belongs to the PINc/VapC protein family.
   
  
 0.521
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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