KEGG   REACTION: R02297
Entry
R02297                      Reaction                               
Name
xanthosine:orthophosphate ribosyltransferase
Definition
Xanthosine + Orthophosphate <=> Xanthine + alpha-D-Ribose 1-phosphate
Equation
C01762 + C00009 <=> C00385 + C00620
Reaction class
RC00122  C00385_C01762
Enzyme
2.4.2.1
Pathway
rn00230  Purine metabolism
rn01100  Metabolic pathways
rn01110  Biosynthesis of secondary metabolites
rn01232  Nucleotide metabolism
Brite
Enzymatic reactions [BR:br08201]
 2. Transferase reactions
  2.4  Glycosyltransferases
   2.4.2  Pentosyltransferases
    2.4.2.1
     R02297  Xanthosine + Orthophosphate <=> Xanthine + alpha-D-Ribose 1-phosphate
IUBMB reaction hierarchy [BR:br08202]
 2. Transferase reactions
  2.4.2.1
   R08368  N-D-Ribosylpurine <=> Purine
    R02297  Xanthosine <=> Xanthine
Orthology
K03783  purine-nucleoside phosphorylase [EC:2.4.2.1]
K03784  purine-nucleoside phosphorylase [EC:2.4.2.1]
K09913  purine/pyrimidine-nucleoside phosphorylase [EC:2.4.2.1 2.4.2.2]
Reference
1  [PMID:12180982]
  Authors
Stoychev G, Kierdaszuk B, Shugar D.
  Title
Xanthosine and xanthine. Substrate properties with purine nucleoside phosphorylases, and relevance to other enzyme systems.
  Journal
Eur J Biochem 269:4048-57 (2002)
DOI:10.1046/j.1432-1033.2002.03097.x
Other DBs
RHEA: 27641
LinkDB

KEGG   RCLASS: RC00122
Entry
RC00122                     RClass                                 
Definition
N4y-N5x:C1y-*:C8x+C8y-C8x+C8y
Reactant pair
C00371_C16443    C00385_C00655    C00385_C01762
C02380_C04646    C02860_C04422    C15586_C15587
C15587_C20463    C16352_C16353    C16614_C16615
Related class
Reaction
R02142 R02143 R02297 R02341 R04071 R07918 R08075 R08237
R08238 R08368 R10244
Enzyme
2.4.1.118       2.4.1.-         2.4.2.1         2.4.2.8         
2.4.2.22        3.2.2.1         3.2.2.25
Pathway
rn00230  Purine metabolism
rn00232  Caffeine metabolism
rn00908  Zeatin biosynthesis
rn00983  Drug metabolism - other enzymes
rn01100  Metabolic pathways
rn01110  Biosynthesis of secondary metabolites
rn01232  Nucleotide metabolism
Orthology
K00760  hypoxanthine phosphoribosyltransferase [EC:2.4.2.8]
K00769  xanthine phosphoribosyltransferase [EC:2.4.2.22]
K01239  purine nucleosidase [EC:3.2.2.1]
K03783  purine-nucleoside phosphorylase [EC:2.4.2.1]
K03784  purine-nucleoside phosphorylase [EC:2.4.2.1]
K03816  xanthine phosphoribosyltransferase [EC:2.4.2.22]
K09913  purine/pyrimidine-nucleoside phosphorylase [EC:2.4.2.1 2.4.2.2]
K13493  cytokinin-N-glucosyltransferase [EC:2.4.1.-]
K15780  bifunctional protein TilS/HprT [EC:6.3.4.19 2.4.2.8]
K19836  hypoxanthine phosphoribosyltransferase [EC:2.4.2.8]

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