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
nadAQuinolinate synthetase; Catalyzes the condensation of iminoaspartate with dihydroxyacetone phosphate to form quinolinate. (368 aa)    
Predicted Functional Partners:
nadC
Nicotinate-nucleotide pyrophosphorylase; Involved in the catabolism of quinolinic acid (QA).
 
 0.999
nadB
L-aspartate oxidase; Catalyzes the oxidation of L-aspartate to iminoaspartate.
 0.999
safA
Morphogenetic protein associated with SpoVID; Probably involved in the assembly of some coat protein components implicated in both lysozyme resistance and germination. Could be required for the assembly of CotG. Associates with SpoIVD during the early stage of coat assembly.
  
    0.955
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.
  
  
 0.933
nadD
Nicotinate-nucleotide adenylyltransferase; Catalyzes the reversible adenylation of nicotinate mononucleotide (NaMN) to nicotinic acid adenine dinucleotide (NaAD); Belongs to the NadD family.
     
 0.932
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.
 
  
 0.924
niaR
Transcriptional 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.
 
  
 0.912
cysE
Serine acetyltransferase; Catalyzes the acetylation of serine by acetyl-CoA to produce O-acetylserine (OAS).
  
    0.787
ispG
4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase (flavodoxin); Converts 2C-methyl-D-erythritol 2,4-cyclodiphosphate (ME- 2,4cPP) into 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate. Belongs to the IspG family.
     
 0.769
pncA
Nicotinamidase; Evidence 2a: Function of homologous gene experimentally demonstrated in an other organism; Product type e: enzyme; Belongs to the isochorismatase family.
      
 0.769
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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