Ligand 3-Methylxanthine

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Basic Ligand Information

Molecular Structure
Picture of 3-Methylxanthine (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
C6H6N4O2
3-Methylxanthine
GMSNIKWWOQHZGF-UHFFFAOYSA-N
Synonyms:
2-oxo-3-methylhypoxanthine, monomethylxanthine

Roles as Enzyme Ligand

In Vivo Substrate in Enzyme-catalyzed Reactions (1 result)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
3-methylxanthine + O2 + NAD(P)H + H+ = xanthine + NAD(P)+ + H2O + formaldehyde
show the reaction diagram
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In Vivo Product in Enzyme-catalyzed Reactions (2 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE

Substrate in Enzyme-catalyzed Reactions (7 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
3-methylxanthine + O2 + NADH + H+ = xanthine + NAD+ + H2O + formaldehyde
show the reaction diagram
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3-methylxanthine + ferricyanide + H2O = 3-methylurate + ferrocyanide
show the reaction diagram
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3-methylxanthine + H2O + O2 = 3-methylurate + H2O2
show the reaction diagram
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S-adenosyl-L-methionine + 3-methylxanthine = S-adenosyl-L-homocysteine + 1,3-dimethylxanthine
show the reaction diagram
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S-adenosyl-L-methionine + 3-methylxanthine = S-adenosyl-L-homocysteine + 1,3-dimethylxanthine
show the reaction diagram
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Product in Enzyme-catalyzed Reactions (8 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
3-methylhypoxanthine + H2O + O2 = 3-methylxanthine + H2O2
show the reaction diagram
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3-methylxanthosine + H2O = 3-methylxanthine + D-ribose
show the reaction diagram
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Inhibitor in Enzyme-catalyzed Reactions (2 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE

Enzyme Kinetic Parameters

kcat Value (Turnover Number) (1 result)

EC NUMBER
TURNOVER NUMBER [1/S]
TURNOVER NUMBER MAXIMUM [1/S]
COMMENTARY
LITERATURE
0.53
-
pH 7.5, 30°C

KM Value (1 result)

EC NUMBER
KM VALUE [MM]
KM VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
0.022
-
pH 7.5, 30°C

Ki Value (1 result)

EC NUMBER
KI VALUE [MM]
KI VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
0.62
-
-

References & Links

Links to other databases for 3-Methylxanthine

ChEBI
PubChem
ChEBI
PubChem