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
ntcAGlobal nitrogen regulator; Required for full expression of proteins subject to ammonium repression. Transcriptional activator of genes subject to nitrogen control. (225 aa)    
Predicted Functional Partners:
glnA
Glutamate--ammonia ligase; Involved in nitrogen metabolism via ammonium assimilation. Catalyzes the ATP-dependent biosynthesis of glutamine from glutamate and ammonia.
   
  
 0.928
glnB
Nitrogen regulatory protein P-II; P-II indirectly controls the transcription of the GS 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 phosphorylated, these events are reversed. In nitrogen-limiting conditions, when the ratio of Gln to 2-ketoglutarate decreases, P-II is phosphorylated which allows the deadenylation of glutamine synthetase (GS), thus activating the enzyme (By similarity); Belongs to the P(II) protein family.
      
 0.924
nirA
Ferredoxin--nitrite reductase; ORF_ID:slr0898; Belongs to the nitrite and sulfite reductase 4Fe-4S domain family.
      
 0.841
icd
Isocitrate dehydrogenase (NADP+); ORF_ID:slr1289.
   
 
 0.835
ntcB
Transcriptional activator protein; Seems to regulate utilization of fixed nitrogen by controlling the expression of a certain gene(s) involved in nitrogen metabolism.
   
  
 0.832
sll1424
ORF_ID:sll1424; hypothetical protein.
     
 0.828
glnN
Glutamate--ammonia ligase; ORF_ID:slr0288; Belongs to the glutamine synthetase family.
      
 0.824
slr0947
OmpR subfamily; ORF_ID:slr0947.
   
 
 0.799
smpB
Small protein; Required for rescue of stalled ribosomes mediated by trans- translation. Binds to transfer-messenger RNA (tmRNA), required for stable association of tmRNA with ribosomes. tmRNA and SmpB together mimic tRNA shape, replacing the anticodon stem-loop with SmpB. tmRNA is encoded by the ssrA gene; the 2 termini fold to resemble tRNA(Ala) and it encodes a 'tag peptide', a short internal open reading frame. During trans-translation Ala-aminoacylated tmRNA acts like a tRNA, entering the A-site of stalled ribosomes, displacing the stalled mRNA. The ribosome then switches to transl [...]
      
 0.792
sll1924
ORF_ID:sll1924; hypothetical protein.
  
     0.770
Your Current Organism:
Synechocystis sp. PCC6803
NCBI taxonomy Id: 1148
Other names: Aphanocapsa sp. (strain N-1), Aphanocapsa sp. N-1, S. sp. PCC 6803, Synechocystis sp. (ATCC 27184), Synechocystis sp. (PCC 6803), Synechocystis sp. (strain PCC 6803), Synechocystis sp. ATCC 27184, Synechocystis sp. PCC 6803, Synechocystis sp. PCC 6803 A, Synechocystis sp. PCC 6803 B
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