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
nrpRConserved hypothetical protein; Transcriptional repressor of nitrogen fixation and assimilation genes. Binds to two tandem operators in the glnA and nif promoters, thereby blocking transcription of the genes. Belongs to the NrpR family. (542 aa)    
Predicted Functional Partners:
glnA
Glutamine synthetase (glnA); Probably involved in nitrogen metabolism via ammonium assimilation. Catalyzes the ATP-dependent biosynthesis of glutamine from glutamate and ammonia. Beta-glutamate is a much poorer substrate than alpha-glutamate.
     
 0.917
nifH
Nitrogenase iron protein (nifH); The key enzymatic reactions in nitrogen fixation are catalyzed by the nitrogenase complex, which has 2 components: the iron protein and the molybdenum-iron protein.
      
 0.869
pdxT
Conserved hypothetical protein; Catalyzes the hydrolysis of glutamine to glutamate and ammonia as part of the biosynthesis of pyridoxal 5'-phosphate. The resulting ammonia molecule is channeled to the active site of PdxS.
      
 0.720
gatB
Glu-tRNA amidotransferase (gatB); Allows the formation of correctly charged Asn-tRNA(Asn) or Gln-tRNA(Gln) through the transamidation of misacylated Asp-tRNA(Asn) or Glu-tRNA(Gln) in organisms which lack either or both of asparaginyl- tRNA or glutaminyl-tRNA synthetases. The reaction takes place in the presence of glutamine and ATP through an activated phospho-Asp- tRNA(Asn) or phospho-Glu-tRNA(Gln) (By similarity); Belongs to the GatB/GatE family. GatB subfamily.
       0.663
nifB
nifB protein (nifB); Involved in the biosynthesis of the iron-molybdenum cofactor (FeMo-co or M-cluster) found in the dinitrogenase enzyme of the nitrogenase complex in nitrogen-fixing microorganisms. NifB catalyzes the crucial step of radical SAM-dependent carbide insertion that occurs concomitant with the insertion of a 9th sulfur and the rearrangement/coupling of two [4Fe-4S] clusters into a [8Fe-9S-C] cluster, the precursor to the M-cluster.
      
 0.640
MJ_0558
Conserved hypothetical protein; Similar to GB:AE000666 percent identity: 41.96; identified by sequence similarity; putative.
  
     0.551
aglB
Putative transmembrane oligosaccharyl transferase; Oligosaccharyl transferase (OST) that catalyzes the initial transfer of a defined glycan (ManNAcGlc-2,3-diNAcAGlcNAc in Methanococci) from the lipid carrier dolichol-monophosphate to an asparagine residue within an Asn-X-Ser/Thr consensus motif in nascent polypeptide chains, the first step in protein N-glycosylation. Involved in the assembly of an N-linked disaccharide that decorates the S-layer glycoprotein and flagellins.
  
     0.512
MJ_0138
Cobyric acid synthase (cbiP); Similar to GB:M62866 SP:P29932 PID:151151 percent identity: 33.62; identified by sequence similarity; putative.
  
     0.502
MJ_0841
Conserved hypothetical protein; Radical SAM methyltransferase that is responsible for the C(5)-methylation of 'Arg-274' of the methyl-coenzyme M reductase (MCR) subunit alpha McrA. This post-translational methylation, despite being not essential in vivo, plays a role for the stability and structural integrity of MCR.
  
     0.492
ilvH
Acetolactate synthase small subunit (ilvN); Similar to GB:L03181 SP:P37252 PID:143092 PID:1770067 GB:AL009126 percent identity: 49.37; identified by sequence similarity; putative; Belongs to the acetolactate synthase small subunit family.
       0.480
Your Current Organism:
Methanocaldococcus jannaschii
NCBI taxonomy Id: 243232
Other names: M. jannaschii DSM 2661, Methanocaldococcus jannaschii DSM 2661, Methanocaldococcus jannaschii str. DSM 2661, Methanococcus jannaschii DSM 2661
Server load: low (26%) [HD]
STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.