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
guaBInositol-monophosphate dehydrogenase; Catalyzes the conversion of inosine 5'-phosphate (IMP) to xanthosine 5'-phosphate (XMP), the first committed and rate-limiting step in the de novo synthesis of guanine nucleotides, and therefore plays an important role in the regulation of cell growth. Belongs to the IMPDH/GMPR family. (493 aa)    
Predicted Functional Partners:
guaA
GMP synthase; Catalyzes the synthesis of GMP from XMP.
 0.999
purA
Putative adenylosuccinate synthetase; Plays an important role in the de novo pathway of purine nucleotide biosynthesis. Catalyzes the first committed step in the biosynthesis of AMP from IMP; Belongs to the adenylosuccinate synthetase family.
 
 
 0.991
xpt
Xanthine phosphoribosyltransferase; Converts the preformed base xanthine, a product of nucleic acid breakdown, to xanthosine 5'-monophosphate (XMP), so it can be reused for RNA or DNA synthesis.
  
 
 0.960
purH
Phosphoribosylaminoimidazolecarboxamide formyltransferase / IMP cyclohydrolase; High confidence in function and specificity.
  
 
 0.959
guaC
GMP reductase; Catalyzes the irreversible NADPH-dependent deamination of GMP to IMP. It functions in the conversion of nucleobase, nucleoside and nucleotide derivatives of G to A nucleotides, and in maintaining the intracellular balance of A and G nucleotides; Belongs to the IMPDH/GMPR family. GuaC type 2 subfamily.
  
  
0.927
llmg_1188
Conserved hypothetical protein; Pyrophosphatase that catalyzes the hydrolysis of nucleoside triphosphates to their monophosphate derivatives, with a high preference for the non-canonical purine nucleotides XTP (xanthosine triphosphate), dITP (deoxyinosine triphosphate) and ITP. Seems to function as a house-cleaning enzyme that removes non-canonical purine nucleotides from the nucleotide pool, thus preventing their incorporation into DNA/RNA and avoiding chromosomal lesions. Belongs to the HAM1 NTPase family.
  
 0.923
hpt
[EC:2.4.2.8], Hypoxanthine phosphoribosyltransferase (EC 2.4.2.8) (HPRT)., Hypoxanthine phosphoribosyl transferase, Phosphoribosyl transferase domain, HGPRTase: hypoxanthine phosphoribosyltransferase; High confidence in function and specificity; Belongs to the purine/pyrimidine phosphoribosyltransferase family.
    
 0.907
hprT
HprT protein; PF00156.12: Phosphoribosyltransferase; High confidence in function and specificity; Belongs to the purine/pyrimidine phosphoribosyltransferase family.
    
 0.907
llmg_0192
5'-nucleotidase precursor, Phosphoesterase-related protein; High confidence in function and specificity; Belongs to the 5'-nucleotidase family.
    
 0.904
nucA
5'-nucleotidase; High confidence in function and specificity.
     
  0.900
Your Current Organism:
Lactococcus lactis
NCBI taxonomy Id: 416870
Other names: L. lactis subsp. cremoris MG1363, Lactococcus lactis subsp. cremoris MG1363, Lactococcus lactis subsp. cremoris str. MG1363, Lactococcus lactis subsp. cremoris strain MG1363
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