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
pntANAD(P) transhydrogenase subunit alpha part 1; Region:COG3288C. (382 aa)    
Predicted Functional Partners:
pntB
NAD(P) transhydrogenase subunit beta; The transhydrogenation between NADH and NADP is coupled to respiration and ATP hydrolysis and functions as a proton pump across the membrane; Belongs to the PNT beta subunit family.
 0.999
pntB-2
NAD(P) transhydrogenase subunit alpha part 2.
 
 0.999
ppnK
Inorganic polyphosphate/ATP-NAD kinase PpnK; 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.
     
 0.914
nadE
Glutamine-dependent NAD(+) synthetase NadE; Catalyzes the ATP-dependent amidation of deamido-NAD to form NAD. Uses L-glutamine as a nitrogen source.
     
 0.907
sthA
Soluble pyridine nucleotide transhydrogenase SthA; Region:COG1249C.
     
 0.906
nadD
Nicotinate-nucleotide adenylyltransferase NadD; Catalyzes the reversible adenylation of nicotinate mononucleotide (NaMN) to nicotinic acid adenine dinucleotide (NaAD).
     
 0.906
nudC
NADH pyrophosphatase NudC; Region:COG2816F.
     
  0.900
mazG
Nucleoside triphosphate pyrophosphohydrolase MazG; Region:COG3956R.
    
  0.900
rpoC
DNA-directed RNA polymerase subunit beta; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.
   
    0.609
APG92549.1
Hypothetical protein.
       0.561
Your Current Organism:
Sinorhizobium americanum
NCBI taxonomy Id: 194963
Other names: ATCC BAA-532, CIP 108390, DSM 15007, Ensifer americanum, Ensifer americanus, Ensifer americanus corrig. (Toledo et al. 2003) Wang et al. 2015, Ensifer sp. AC14c, Ensifer sp. CFNEI 156, S. americanum, Sinorhizobium americanum Toledo et al. 2004, Sinorhizobium americanus, Sinorhizobium sp. CFNEI 156, Sinorhizobium sp. CFNEI 54, strain CFNEI 156
Server load: medium (42%) [HD]
STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.