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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Gene Fusion
Cooccurrence
Coexpression
Experiments
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[Homology]
Score
niaRTranscriptional repressor of de novo NAD biosynthesis; In the presence of nicotinic acid represses transcription of the nadBCA and nifS-nadR operons. Also binds to DNA upstream of the niaP gene, probably regulating it as well. May bind nicotinic acid. (180 aa)    
Predicted Functional Partners:
nadC
Nicotinate-nucleotide pyrophosphorylase; Involved in the catabolism of quinolinic acid (QA).
  
  
 0.972
nadB
L-aspartate oxidase; Catalyzes the oxidation of L-aspartate to iminoaspartate.
  
  
 0.948
pncB
Nicotinate phosphoribosyltransferase; Catalyzes the synthesis of beta-nicotinate D-ribonucleotide from nicotinate and 5-phospho-D-ribose 1-phosphate at the expense of ATP; Belongs to the NAPRTase family.
  
  
 0.928
nifS
Putative desulfurase involved in iron-sulfur clusters for NAD biosynthesis; Catalyzes the removal of elemental sulfur from cysteine to produce alanine (By similarity). Seems to be required for NAD biosynthesis.
  
    0.922
nadA
Quinolinate synthetase; Catalyzes the condensation of iminoaspartate with dihydroxyacetone phosphate to form quinolinate.
 
  
 0.912
nadD
Nicotinate-nucleotide adenylyltransferase; Catalyzes the reversible adenylation of nicotinate mononucleotide (NaMN) to nicotinic acid adenine dinucleotide (NaAD); Belongs to the NadD family.
      
 0.872
pncA
Nicotinamidase; Evidence 2a: Function of homologous gene experimentally demonstrated in an other organism; Product type e: enzyme; Belongs to the isochorismatase family.
     
 0.849
birA
Biotin acetyl-CoA-carboxylase ligase and biotin regulon repressor; Acts both as a biotin--[acetyl-CoA-carboxylase] ligase and a repressor; Belongs to the biotin--protein ligase family.
     
 0.786
naiP
Niacin permease; Probably involved in the uptake of amidated and deamidated forms of niacin. Increases the growth rate of E.coli that is unable to make niacin de novo; confers increased sensitivity to the toxic niacin analog 6-amino-nicotinamide to wild-type E.coli. There is probably another mechanism for niacin uptake.
 
  
 0.698
maa
Maltose O-acetyltransferase; Catalyzes the CoA-dependent transfer of an acetyl group to maltose and other sugars. Acetylates glucose exclusively at the C6 position and maltose at the C6 position of the non-reducing end glucosyl moiety. Is able to acetylate maltooligosaccharides.
      0.638
Your Current Organism:
Bacillus subtilis 168
NCBI taxonomy Id: 224308
Other names: B. subtilis subsp. subtilis str. 168, Bacillus subtilis subsp. subtilis 168, Bacillus subtilis subsp. subtilis str. 168, Bacillus subtilis subsp. subtilis str. BGSC 1A700
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