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
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glnDProtein PII; Modifies, by uridylylation and deuridylylation, the PII regulatory proteins (GlnB and homologs), in response to the nitrogen status of the cell that GlnD senses through the glutamine level. Under low glutamine levels, catalyzes the conversion of the PII proteins and UTP to PII-UMP and PPi, while under higher glutamine levels, GlnD hydrolyzes PII-UMP to PII and UMP (deuridylylation). Thus, controls uridylylation state and activity of the PII proteins, and plays an important role in the regulation of nitrogen assimilation and metabolism. (890 aa)    
Predicted Functional Partners:
glnB
Regulatory protein P-II for glutamine synthetase; P-II indirectly controls the transcription of the glutamine synthetase gene (GlnA). P-II prevents NR-II-catalyzed conversion of NR- I to NR-I-phosphate, the transcriptional activator of GlnA. When P-II is uridylylated to P-II-UMP, these events are reversed. When the ratio of Gln to 2-ketoglutarate decreases, P-II is uridylylated to P-II-UMP, which causes the deadenylation of glutamine synthetase by GlnE, so activating the enzyme (By similarity).
 
 
 0.997
glnK
Nitrogen regulatory protein P-II 2; P-II indirectly controls the transcription of the glutamine synthetase gene (GlnA). P-II prevents NR-II-catalyzed conversion of NR- I to NR-I-phosphate, the transcriptional activator of GlnA. When P-II is uridylylated to P-II-UMP, these events are reversed. When the ratio of Gln to 2-ketoglutarate decreases, P-II is uridylylated to P-II-UMP, which causes the deadenylation of glutamine synthetase by GlnE, so activating the enzyme (By similarity); Belongs to the P(II) protein family.
 
 
 
 0.980
glnE
Adenylylating enzyme for glutamine synthetase; Involved in the regulation of glutamine synthetase GlnA, a key enzyme in the process to assimilate ammonia. When cellular nitrogen levels are high, the C-terminal adenylyl transferase (AT) inactivates GlnA by covalent transfer of an adenylyl group from ATP to specific tyrosine residue of GlnA, thus reducing its activity. Conversely, when nitrogen levels are low, the N-terminal adenylyl removase (AR) activates GlnA by removing the adenylyl group by phosphorolysis, increasing its activity. The regulatory region of GlnE binds the signal trans [...]
 
   
 0.930
gltB
Glutamate synthase, large subunit; Residues 1 to 1517 of 1517 are 99.53 pct identical to residues 1 to 1517 of 1517 from Escherichia coli K-12 Strain MG1655: B3212.
 
   
 0.891
glnL
Histidine protein kinase sensor for GlnG regulator (nitrogen regulator II, NRII); Member of the two-component regulatory system NtrB/NtrC, which controls expression of the nitrogen-regulated (ntr) genes in response to nitrogen limitation. Under conditions of nitrogen limitation, NtrB autophosphorylates and transfers the phosphoryl group to NtrC. In the presence of nitrogen, acts as a phosphatase that dephosphorylates and inactivates NtrC.
  
 
 
 0.890
amtB
Probable ammonium transporter; Involved in the uptake of ammonia.
 
   
 0.867
glnA
Glutamine synthetase; Catalyzes the ATP-dependent biosynthesis of glutamine from glutamate and ammonia; Belongs to the glutamine synthetase family.
 
   
 0.854
glnG
Response regulator for gln (sensor glnL) (nitrogen regulator I, NRI); Member of the two-component regulatory system NtrB/NtrC, which controls expression of the nitrogen-regulated (ntr) genes in response to nitrogen limitation. Phosphorylated NtrC binds directly to DNA and stimulates the formation of open promoter-sigma54-RNA polymerase complexes.
      
 0.804
dapD
2,3,4,5-tetrahydropyridine-2-carboxylate N-succinyltransferase; Residues 1 to 274 of 274 are 99.63 pct identical to residues 1 to 274 of 274 from Escherichia coli K-12 Strain MG1655: B0166; Belongs to the transferase hexapeptide repeat family.
     
 0.733
afuC
Putative ATP-binding component of a transport system; Part of the ABC transporter complex FbpABC involved in Fe(3+) ions import. Responsible for energy coupling to the transport system.
      
 0.721
Your Current Organism:
Escherichia coli O157H7 EDL933
NCBI taxonomy Id: 155864
Other names: E. coli O157:H7 str. EDL933, Escherichia coli O157:H7 EDL933, Escherichia coli O157:H7 str. EDL933, Escherichia coli O157:H7 strain EDL933
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