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
gmkGuanylate kinase; Essential for recycling GMP and indirectly, cGMP. (185 aa)    
Predicted Functional Partners:
guaA
Glutamine amidotransferase class-I:GMP synthase; Catalyzes the synthesis of GMP from XMP.
 
 
 0.965
rpoZ
Putative DNA-directed RNA polymerase (omega chain); Promotes RNA polymerase assembly. Latches the N- and C- terminal regions of the beta' subunit thereby facilitating its interaction with the beta and alpha subunits.
  
  
 0.955
apt
Adenine/guanine phosphoribosyltransferases and related PRPP-binding protein; Catalyzes a salvage reaction resulting in the formation of AMP, that is energically less costly than de novo synthesis.
   
 
 0.945
pykF
COG469 Pyruvate kinase [Carbohydrate transport and metabolism]; Belongs to the pyruvate kinase family.
 
 
 0.943
ndk
Nucleoside diphosphate kinase; Major role in the synthesis of nucleoside triphosphates other than ATP. The ATP gamma phosphate is transferred to the NDP beta phosphate via a ping-pong mechanism, using a phosphorylated active-site intermediate; Belongs to the NDK family.
   
 0.927
spoT
Guanosine-3',5'-bis(diphosphate) 3'-diphosphatase, (ppGpp)ase; In eubacteria ppGpp (guanosine 3'-diphosphate 5-' diphosphate) is a mediator of the stringent response that coordinates a variety of cellular activities in response to changes in nutritional abundance.
  
 
 0.924
nrdJ
Ribonucleotide reductase (Class II).
     
  0.900
surE
Survival protein SurE; Nucleotidase that shows phosphatase activity on nucleoside 5'-monophosphates; Belongs to the SurE nucleotidase family.
     
  0.900
adk
Adenylate kinase; Catalyzes the reversible transfer of the terminal phosphate group between ATP and AMP. Plays an important role in cellular energy homeostasis and in adenine nucleotide metabolism; Belongs to the adenylate kinase family.
 
 
 0.806
eno
Enolase; Catalyzes the reversible conversion of 2-phosphoglycerate into phosphoenolpyruvate. It is essential for the degradation of carbohydrates via glycolysis; Belongs to the enolase family.
  
 
 0.726
Your Current Organism:
Prochlorococcus marinus MIT9211
NCBI taxonomy Id: 93059
Other names: P. marinus str. MIT 9211, Prochlorococcus marinus str. MIT 9211, Prochlorococcus sp. MIT 9211, Prochlorococcus sp. MIT9211
Server load: medium (58%) [HD]
STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.