close STRING v12.5 is now available!
The next version of STRING is ready for use in your analyses: updated networks across STRING • newly available directed regulatory networks • a new typed view showing functional, physical, and regulatory edges in one network • new clustering options and cluster-based layouts • … and much more!
Explore STRING v12.5 →
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
pqqBCoenzyme PQQ synthesis protein B; May be involved in the transport of PQQ or its precursor to the periplasm; Belongs to the PqqB family. (308 aa)    
Predicted Functional Partners:
pqqC
Coenzyme PQQ synthesis protein C; 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.
  
 0.997
pqqE
Coenzyme PQQ synthesis protein E; 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).
 
  
 0.970
CSIRO_2510
Coenzyme PQQ synthesis protein D.
 
  
 0.963
CSIRO_2512
Proline iminopeptidase; Belongs to the peptidase S33 family.
       0.800
CSIRO_3420
Quino(hemo)protein alcohol dehydrogenase.
 
  
 0.799
phnH
PhnH protein.
  
 
 0.532
phnJ
PhnJ protein; Catalyzes the breakage of the C-P bond in alpha-D-ribose 1- methylphosphonate 5-phosphate (PRPn) forming alpha-D-ribose. Belongs to the PhnJ family.
  
 
 0.532
phnN
ATP-binding protein PhnN / Guanylate kinase.
  
 
 0.527
phnI
PhnI protein.
  
 
 0.526
lipA
Lipoate synthase; Catalyzes the radical-mediated insertion of two sulfur atoms into the C-6 and C-8 positions of the octanoyl moiety bound to the lipoyl domains of lipoate-dependent enzymes, thereby converting the octanoylated domains into lipoylated derivatives.
    
 0.504
Your Current Organism:
Bradyrhizobiaceae bacterium SG6C
NCBI taxonomy Id: 709797
Other names: B. bacterium SG-6C, Bradyrhizobiaceae bacterium SG-6C
Server load: low (32%) [HD]
STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.