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.
Knowledge-based Evidence
from curated databases
textmining
Assay-based Predictions
experimentally determined
co-expression
Genomic Predictions
gene neighborhood
gene co-occurrence
gene fusions
Your Input:
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Co-occurrence
Co-expression
Experiments
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[Homology]
Score
pqqEPyrroloquinoline quinone biosynthesis protein PqqE; Catalyzes the cross-linking of a glutamate residue and a tyrosine residue in the PqqA protein as part of the biosynthesis of pyrroloquinoline quinone (PQQ). (355 aa)    
Predicted Functional Partners:
pqqC
Pyrroloquinoline-quinone synthase; Ring cyclization and eight-electron oxidation of 3a-(2-amino- 2-carboxyethyl)-4,5-dioxo-4,5,6,7,8,9-hexahydroquinoline-7,9- dicarboxylic-acid to PQQ.
 
  
 0.975
pqqG
Pyrroloquinoline quinone biosynthesis protein PqqB; May be involved in the transport of PQQ or its precursor to the periplasm; Belongs to the PqqB family.
 
  
 0.974
pqqD
Pyrroloquinoline quinone biosynthesis protein D.
 
  
 0.962
ribB
3,4-dihydroxy 2-butanone 4-phosphate synthase; Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate; Belongs to the GTP cyclohydrolase II family. In the N-terminal section; belongs to the DHBP synthase family.
    
  0.648
adhA
PQQ-dependent alcohol dehydrogenase.
 
  
 0.629
duf6
Protein of unknown function DUF6, transmembrane.
       0.596
pqqA
Hypothetical protein predicted by Glimmer/Critica; Required for coenzyme pyrroloquinoline quinone (PQQ) biosynthesis. PQQ is probably formed by cross-linking a specific glutamate to a specific tyrosine residue and excising these residues from the peptide; Belongs to the PqqA family.
       0.513
AGA_500
Hypothetical protein; COG: FOG: WD40 repeat.
  
  
 0.471
phnA
Phosphonoacetate hydrolase.
       0.428
moaA
Molybdenum cofactor biosynthesis protein A; Catalyzes the cyclization of GTP to (8S)-3',8-cyclo-7,8- dihydroguanosine 5'-triphosphate.
    
 0.426
Your Current Organism:
Acetobacter ghanensis
NCBI taxonomy Id: 431306
Other names: A. ghanensis, Acetobacter ghanensis Cleenwerck et al. 2007, Acetobacter sp. 384, Acetobacter sp. 444B, DSM 18895, LMG 23848, LMG:23848, strain 430A, strain R-29337
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