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
spmTProbable exported protein; Catalyzes the cleavage of sphingomyelin, a major lipid in eukaryotic cells, into ceramide and phosphocholine, which are then utilized by M.tuberculosis as carbon, nitrogen and phosphorus sources, respectively. Thus, enables M.tuberculosis to utilize sphingomyelin as a source of several essential nutrients for intracellular growth during infection. Furthermore, lyses erythrocytes and constitutes the main hemolytic factor of M.tuberculosis. (490 aa)    
Predicted Functional Partners:
cpnT
Hypothetical alanine and proline rich protein; Has a dual function in uptake of nutrients and induction of host cell death. The N-terminal domain (NTD) forms an outer membrane channel and is used for uptake of nutrients across the outer membrane. The secreted C-terminal toxic domain (TNT) acts as a glycohydrolase, which hydrolyzes the essential cellular coenzyme NAD(+) in the cytosol of infected macrophages, leading to necrotic host cell death. Both functions are required for survival, replication and cytotoxicity of M.tuberculosis in macrophages.
  
  
 0.823
ctpD
Probable cation transporter P-type ATPase D CtpD; Involved in heavy metal homeostasis. Probably exports nickel and cobalt ions out of the cell (By similarity); Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IB subfamily.
  
    0.799
Rv0312
Rv0312, (MTCY63.17), len: 620 aa. Conserved hypothetical protein with highly Pro-, Thr-rich C-terminus. Similar to Pro-,Thr-rich region in Rv2264c|AL021925|MTV022_14 from Mycobacterium tuberculosis (592 aa), FASTA scores: opt: 1075, E(): 0, (38.9% identity in 627 aa overlap). Also some similarity with Rv0350|dnaK from Mycobacterium tuberculosis. Possibly membrane protein; has hydrophobic stetch in its middle part.
  
  
 0.792
egtE
Conserved hypothetical protein; Probably catalyzes the conversion of hercynylcysteine sulfoxide to ergothioneine. Ergothioneine is an antioxidant that protects mycobacteria from oxidative stress. Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. EgtE subfamily.
  
   0.783
Rv3778c
Possible aminotransferase; Is essential for optimal growth; Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family.
  
   0.783
csd
Probable cysteine desulfurase Csd; Catalyzes the removal of elemental sulfur and selenium atoms from L-cysteine, L-cystine, L-selenocysteine, and L-selenocystine to produce L-alanine; Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. Csd subfamily.
  
   0.781
Rv1754c
Conserved protein; Rv1754c, (MTCY28.17c), len: 563 aa. Conserved protein, has proline-rich central region. Some similarity in central region to other Mycobacterium tuberculosis proline-rich proteins e.g. O06555|Rv1157c|MTCI65.24c (371 aa), (32.5% identity in 191 aa overlap). Contains PS00017 ATP/GTP-binding site motif A (P-loop). A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004).
  
  
 0.764
Rv3403c
Hypothetical protein; Rv3403c, (MTCY78.25), len: 533 aa. Hypothetical unknown protein, but some weak similarity to Q9KJP2 hypothetical 54.9 KDA protein from Myxococcus xanthus (504 aa), FASTA scores: opt: 157, E(): 0.011, (24.1% identity in 548 aa overlap).
  
    0.764
Rv1576c
Rv1576c, (MTCY336.28), len: 473 aa. Probable phiRV1 phage protein (capsid subunit) (see citation below). Highly similar to hypothetical Mycobacterium tuberculosis protein Rv2650c|MTCY441.19 phiRV2 phage related protein, FASTA scores: opt: 2782, E(): 0, (89.1% identity in 468 aa overlap). This region is a possible MT-complex-specific genomic island (See Becq et al., 2007).
  
  
 0.757
mtc28
Rv0040c, (MTCY21D4.03c), len: 310 aa. Mtc28,secreted proline rich 28 kDa antigen protein (has hydrophobic stretch at N-terminus) (see citation below). A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004); To M.leprae ML0031.
   
    0.703
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
Server load: low (24%) [HD]