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:
Neighborhood
Gene Fusion
Cooccurrence
Coexpression
Experiments
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[Homology]
Score
ppkPolyphosphate kinase; Catalyzes the reversible transfer of the terminal phosphate of ATP to form a long-chain polyphosphate (polyP); Belongs to the polyphosphate kinase 1 (PPK1) family. (714 aa)    
Predicted Functional Partners:
AKB66482.1
Exopolyphosphatase.
 
 
 0.992
ppa
Inorganic pyrophosphatase; Catalyzes the hydrolysis of inorganic pyrophosphate (PPi) forming two phosphate ions.
    
 0.944
AKB64599.1
Inorganic pyrophosphatase.
     
  0.900
surE
5-nucleotidase SurE; Nucleotidase that shows phosphatase activity on nucleoside 5'-monophosphates; Belongs to the SurE nucleotidase family.
    
 0.865
AKB65869.1
Phosphate transport system permease protein PstA; TCDB 3.A.1.7.1.
     
 0.803
nadK
NAD kinase; Involved in the regulation of the intracellular balance of NAD and NADP, and is a key enzyme in the biosynthesis of NADP. Catalyzes specifically the phosphorylation on 2'-hydroxyl of the adenosine moiety of NAD to yield NADP.
     
 0.754
AKB64953.1
Hypothetical protein.
 
   
 0.744
AKB64814.1
Hypothetical protein.
 
   
 0.710
AKB64882.1
Exopolyphosphatase.
 
     0.629
AKB66481.1
Hypothetical protein.
 
   
 0.597
Your Current Organism:
Methanosarcina mazei
NCBI taxonomy Id: 213585
Other names: M. mazei S-6, Methanosarcina mazei S-6
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STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.