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
ligDMultifunctional non-homologous end joining DNA repair protein LigD; With Ku forms a non-homologous end joining (NHEJ) repair enzyme which repairs DNA double-strand breaks (DSB) with reduced fidelity. Recognizes, processes and reseals DSBs, including repairs on incompatible DSB which require 3'-resection, gap filling and ligation. Anneals the 3' overhanging strands from opposing breaks to form a gapped intermediate, which then can be extended in trans by using the termini as primers for extension of the annealed break. Binds to the recessed 5'-phosphate moiety of the downstream DNA stra [...] (759 aa)    
Predicted Functional Partners:
mku
DNA end-binding protein, Mku; With LigD forms a non-homologous end joining (NHEJ) repair enzyme. Binds linear dsDNA with 5'- and 3'-overhangs but not closed circular dsDNA nor ssDNA. One dimer binds for every 30 bp. Recruits and stimulates the ligase activity of LigD but not of T4 ligase or a human ligase complex (LIG4/XRCC4). Attenuates the 3'- to 5'-exonuclease activity of LigD. Stimulates the template-directed addition of dNTPs by LigD on 5'-overhangs and nuclease activity on 3'-overhangs. Belongs to the prokaryotic Ku family.
 
  
 0.997
Rv0939
Rv0939, (MTCY10D7.35c), len: 644 aa. Possible bifunctional enzyme, including 2-hydroxyhepta-2,4-diene-1,7-dioate isomerase activity, and cyclase/dehydrase activity. N-terminal part similar to many isomerases e.g. NP_343861.1|NC_002754 2-hydroxyhepta-2,4-diene-1,7-dioate isomerase (hpcE-1) from Sulfolobus solfataricus (318 aa); NP_068932.1|NC_000917 2-hydroxyhepta-2,4-diene-1,7-dioate isomerase (hpcE-1) from Archaeoglobus fulgidus (324 aa), FASTA scores: opt: 400,E(): 5.8e-15, (33.9% identity in 289 aa overlap); etc. And C-terminal part highly similar to many cyclases/dehydrases e.g. AA [...]
  
  
 0.973
polA
Probable DNA polymerase I PolA; In addition to polymerase activity, this DNA polymerase exhibits 3'-5' and 5'-3' exonuclease activity; Belongs to the DNA polymerase type-A family.
  
 0.949
dnaN
DNA polymerase III (beta chain) DnaN (DNA nucleotidyltransferase); Confers DNA tethering and processivity to DNA polymerases and other proteins. Acts as a clamp, forming a ring around DNA (a reaction catalyzed by the clamp-loading complex) which diffuses in an ATP- independent manner freely and bidirectionally along dsDNA. Initially characterized for its ability to contact the catalytic subunit of DNA polymerase III (Pol III), a complex, multichain enzyme responsible for most of the replicative synthesis in bacteria; Pol III exhibits 3'-5' exonuclease proofreading activity. The beta ch [...]
   
 0.895
lppK
Rv2116, (MTCY261.12), len: 189 aa. LppK, conserved lipoprotein, similar to many. Contains N-terminal signal sequence and PS00013 Prokaryotic membrane lipoprotein lipid attachment site. Some similarity to Rv2376c. A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004).
   
 0.895
ligA
DNA ligase [NAD dependent] LigA (polydeoxyribonucleotide synthase [NAD+]); DNA ligase that catalyzes the formation of phosphodiester linkages between 5'-phosphoryl and 3'-hydroxyl groups in double- stranded DNA using NAD as a coenzyme and as the energy source for the reaction. It is essential for DNA replication and repair of damaged DNA; Belongs to the NAD-dependent DNA ligase family. LigA subfamily.
     
 0.895
recA
RecA protein (recombinase A) [contains: endonuclease PI-MTUI (MTU RecA intein)]; Can catalyze the hydrolysis of ATP in the presence of single- stranded DNA, the ATP-dependent uptake of single-stranded DNA by duplex DNA, and the ATP-dependent hybridization of homologous single-stranded DNAs. It interacts with LexA causing its activation and leading to its autocatalytic cleavage.
  
 
 0.880
Rv2090
Probable 5'-3' exonuclease; 5'-3' exonuclease acting preferentially on double-stranded DNA.
 
 0.877
gmhB
D-glycero-alpha-D-manno-heptose-1,7-bisphosphate 7-phosphatase; Converts the D-glycero-alpha-D-manno-heptose 1,7-bisphosphate intermediate into D-glycero-alpha-D-manno-heptose 1-phosphate by removing the phosphate group at the C-7 position.
  
 0.771
xthA
Probable exodeoxyribonuclease III protein XthA (exonuclease III) (EXO III) (AP endonuclease VI); Rv0427c, (MTCY22G10.24c), len: 291 aa. Probable xthA (alternate gene name: xth), exodeoxyribonuclease III protein (see citation below), similar to others e.g. EX3_ECOLI|P09030 exodeoxyribonuclease III from Escherichia Coli strain K12 (268 aa), FASTA scores: opt: 360, E(): 1.2e-17, (29.3% identity in 270 aa overlap); etc. Belongs to the AP/EXOA family of DNA repair enzymes.
  
 
 0.763
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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