Compound
xanthosine
A purine nucleoside in which xanthine is attached to ribofuranose via a β-N9-glycosidic bond.
Definition from ChEBI (CHEBI:18107), read 2026-09-23. CC BY 4.0.
Structure
No depiction stored
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- Class
- Organic compound
- Formula
- C10H12N4O6
- Mass
- 284.228 g/mol
- Charge
- 0
- InChIKey
- UBORTCNDUKBEOP-UUOKFMHZSA-N
- SMILES
- O=c1nc(=O)c2ncn([C@@H]3O[C@H](CO)[C@@H](O)[C@H]3O)c2n1
- Look it up
- ChEBIPubChemBy InChIKey
Identity from ChEBI, geometry from PubChem. Not evidence.
What it touches on the way
Mechanistic reach
1 entity
1 entities reached.
0 reported hops1 assembled from the scaffold
What the reference databases state
Statements
6 statements
6 statements · 2 reference databases · Subject: xanthosine · Sources: Human-GEM, Rhea
- xanthosine is converted to guanosineCompoundRhea RHEA:12861Inferred only
- guanosine is converted to xanthosineCompoundHuman-GEM MAR05394Inferred only
- guanosine is converted to xanthosineCompoundRhea RHEA:12861Inferred only
- XMP is converted to xanthosineCompoundHuman-GEM MAR04705Inferred only
- XMP is converted to xanthosineCompoundRhea RHEA:28530Inferred only
- xanthosine is a substrate of PNPProteinHuman-GEM MAR04663Inferred only
Reactions
11 reactions
phosphate(3-)+xanthosineD-ribose 1-phosphate+xanthine
Catalysed by PNP
Reaction pageReversibleBalancedEC 2.4.2.1cytosol
Human-GEM MAR04663CC BY 4.0Reference data
water+XMPphosphate(3-)+xanthosine
Catalysed by ACP3 or NT5C2 or NT5C1A or NT5C3A or NT5E or NT5C3B or RBAK or NT5C1B
Reaction pageLeft to rightBalancedEC 3.1.3.5cytosol
Human-GEM MAR04705CC BY 4.0Reference data
guanosine+waterammonium+xanthosine
Reaction pageLeft to rightBalancedEC 3.5.4.15cytosol
Human-GEM MAR05394CC BY 4.0Reference data
Reaction pageReversibleBalancedextracellular space, cytosol
Human-GEM MAR09835CC BY 4.0Reference data
Reaction pageReversibleBalance undeterminableextracellular space
Human-GEM MAR09861CC BY 4.0Reference data
guanosine+water+hydronxanthosine+ammonium
Reaction pageDirection not assertedBalanced
Rhea RHEA:12861CC BY 4.0Reference data
xanthosine+S-adenosyl-L-methionineCHEBI:49310+S-adenosyl-L-homocysteine
Reaction pageDirection not assertedBalanced
Rhea RHEA:15025CC BY 4.0Reference data
xanthosine+hydrogenphosphatealpha-D-ribose 1-phosphate+xanthine
Reaction pageDirection not assertedBalanced
Rhea RHEA:27638CC BY 4.0Reference data
xanthosine+waterD-ribose+xanthine
Reaction pageDirection not assertedBalanced
Rhea RHEA:27994CC BY 4.0Reference data
XMP+waterxanthosine+hydrogenphosphate
Catalysed by NT5C2
Reaction pageLeft to rightBalanced
Rhea RHEA:28530CC BY 4.0Reference data
xanthosine+hydronxanthosine+hydron
Reaction pageDirection not assertedBalanced
Rhea RHEA:28939CC BY 4.0Reference data
Other names
7 names
Resolves to: xanthosine
- Also called
- 9-beta-D-ribofuranosyl-3,9-dihydro-1H-purine-2,6-dione9-beta-D-Ribofuranosylxanthine9-β-D-ribofuranosyl-3,9-dihydro-1H-purine-2,6-dione9-β-D-ribofuranosylxanthinexanthine 9-beta-D-ribofuranosidexanthine 9-β-D-ribofuranosideXanthine riboside