STRING protein interaction network
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:
some 3D structure is known or predicted
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
protein homology
Your Input:
Gene Fusion
lacZBeta-d-galactosidase; Belongs to the glycosyl hydrolase 2 family (1024 aa)    
Predicted Functional Partners:
Mfs transporter, ohs family, lactose permease; Responsible for transport of beta-galactosides into the cell, with the concomitant import of a proton (symport system). Can transport lactose, melibiose, lactulose or the analog methyl-1-thio-beta,D- galactopyranoside (TMG), but not sucrose or fructose The substrate specificity is directed toward the galactopyranosyl moiety of the substrate
Maltose/maltodextrin transport system substrate-binding protein; Part of the ABC transporter complex MalEFGK involved in maltose/maltodextrin import. Binds maltose and higher maltodextrins such as maltotriose
Thiogalactoside acetyltransferase; Catalyzes the CoA-dependent transfer of an acetyl group to the 6-O-methyl position of a range of galactosides, glucosides, and lactosides . May assist cellular detoxification by acetylating non-metabolizable pyranosides, thereby preventing their reentry into the cell (Probable)
Maltose outer membrane channel/phage lambda receptor protein; Involved in the transport of maltose and maltodextrins, indispensable for translocation of dextrins containing more than three glucosyl moieties. A hydrophobic path ('greasy slide') of aromatic residues serves to guide and select the sugars for transport through the channel. Also acts as a receptor for several bacteriophages including lambda
Lactose-inducible lac operon transcriptional repressor; Repressor of the lactose operon. Binds allolactose as an inducer
Galactokinase; Catalyzes the transfer of the gamma-phosphate of ATP to D- galactose to form alpha-D-galactose-1-phosphate (Gal-1-P). To a lesser extent, is also able to phosphorylate 2-deoxy-D-galactose and D- galactosamine. Is not able to use D-galacturonic acid, D-talose, L- altrose, and L-glucose as substrates
Alpha-galactosidase, nad(p)-binding; Belongs to the glycosyl hydrolase 4 family
Galactose-1-epimerase; Mutarotase converts alpha-aldose to the beta-anomer. It is active on D-glucose, L-arabinose, D-xylose, D-galactose, maltose and lactose
Luxr family transcriptional regulator, mat/ecp fimbriae transcriptional regulator; Part of the ecpRABCDE operon, which encodes the E.coli common pilus (ECP). ECP is found in both commensal and pathogenic strains and plays a dual role in early-stage biofilm development and host cell recognition. Positively regulates the expression of the ecp operon (By similarity). Also represses expression of the flagellar master operon flhDC, and consequently prevents flagellum biosynthesis and motility. Acts by binding to the regulatory region of the flhDC operon (Probable)
Dna-binding transcriptional repressor lexa; Represses a number of genes involved in the response to DNA damage (SOS response), including recA and lexA. Binds to the 16 bp palindromic sequence 5'-CTGTATATATATACAG-3'. In the presence of single- stranded DNA, RecA interacts with LexA causing an autocatalytic cleavage which disrupts the DNA-binding part of LexA, leading to derepression of the SOS regulon and eventually DNA repair. Implicated in hydroxy radical-mediated cell death induced by hydroxyurea treatment .The SOS response controls an apoptotic-like death (ALD) induced (in the absen [...]
Your Current Organism:
Escherichia coli K12 MG1655
NCBI taxonomy Id: 511145
Other names: E. coli str. K-12 substr. MG1655, Escherichia coli K12 substr. MG1655, Escherichia coli MG1655, Escherichia coli str. K-12 substr. MG1655, Escherichia coli str. K12 substr. MG1655, Escherichia coli str. MG1655, Escherichia coli strain MG1655
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