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:
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Gene Fusion
Cooccurrence
Coexpression
Experiments
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[Homology]
Score
nanCN-acetylnuraminic acid outer membrane channel protein; Outer membrane channel protein allowing the entry of N- acetylneuraminic acid (Neu5Ac, the most abundant sialic acid on host cell surfaces) into the bacteria (Probable). NanC proteins form high- conductance channels which are open at low membrane potentials and which have a weak anion selectivity; Belongs to the oligogalacturonate-specific porin KdgM (TC 1.B.35) family. NanC subfamily. (238 aa)    
Predicted Functional Partners:
nanM
N-acetylneuraminic acid mutarotase; Converts alpha-N-acetylneuranimic acid (Neu5Ac) to the beta- anomer, accelerating the equilibrium between the alpha- and beta- anomers. Probably facilitates sialidase-negative bacteria to compete sucessfully for limited amounts of extracellular Neu5Ac, which is likely taken up in the beta-anomer. In addition, the rapid removal of sialic acid from solution might be advantageous to the bacterium to damp down host responses; Belongs to the NanM family.
  
  
 0.979
nanT
Sialic acid transporter; Catalyzes the proton-dependent transport of sialic acid. Can transport the common sialic acid N-acetylneuraminic acid (Neu5Ac) and the related sialic acids N- glycolylneuraminic acid (Neu5Gc) and 3-keto-3-deoxy-D-glycero-D- galactonononic acid (KDN). Functions as a bidirectional transporter in vitro. Belongs to the major facilitator superfamily. Sialate:H(+) symporter (SHS) (TC 2.A.1.12) family.
   
  
 0.918
nanA
N-acetylneuraminate lyase; Catalyzes the reversible aldol cleavage of N-acetylneuraminic acid (sialic acid; Neu5Ac) to form pyruvate and N-acetylmannosamine (ManNAc) via a Schiff base intermediate; Belongs to the DapA family. NanA subfamily.
   
  
 0.910
nanS
Probable 9-O-acetyl-N-acetylneuraminic acid deacetylase; Probably catalyzes the hydrolysis of the 9-O-acetyl group of 9-O-acetyl-N-acetylneuraminate (Neu5,9Ac2). Is required for growth of E.coli on Neu5,9Ac2, an alternative sialic acid commonly found in mammalian host mucosal sites, in particular in the human intestine.
  
  
 0.853
ompG
Outer membrane porin G; Forms channels functionally larger than those of classical porins.
     
 0.818
yjhB
Putative MFS transporter, membrane protein; Putative transport protein; Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family.
   
  
 0.818
nanR
Sialic acid-inducible nan operon repressor; Transcriptional repressor that controls expression of the genes required for the catabolism of sialic acids. Represses expression of the nanATEK- yhcH, nanCMS and yjhBC operons. Acts by binding directly to the Nan box, a region of approximately 30 bp covering the promoter region.
      
 0.811
ompF
Outer membrane porin 1a (Ia;b;F); Forms pores that allow passive diffusion of small molecules across the outer membrane. (Microbial infection) A mixed OmpC-OmpF heterotrimer is the outer membrane receptor for toxin CdiA-EC536; polymorphisms in extracellular loops 4 and 5 of OmpC confer susceptibility to CdiA- EC536-mediated toxicity; Belongs to the Gram-negative porin family.
     
 0.809
ompA
Outer membrane protein A (3a;II*;G;d); With TolR probably plays a role in maintaining the position of the peptidoglycan cell wall in the periplasm (Probable). Plays a role in resistance to environmental stress, and a role in outer membrane functionality and cell shape. Non-covalently binds peptidoglycan (Probable). Acts as a porin with low permeability that allows slow penetration of small solutes. A very abundant protein, there can be up to 210,000 OmpA molecules per cell. Reconstitution in unilamellar lipid vesicles shows only about 3% of the protein is in an open conformation, whic [...]
     
 0.756
yhcH
DUF386 family protein, cupin superfamily.
   
  
 0.750
Your Current Organism:
Escherichia coli K12
NCBI taxonomy Id: 511145
Other names: E. coli str. K-12 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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