Reaction: CYP1A2 S-demethylates 6MMP

- in pathway: Methylation
At the beginning of this reaction, 1 molecule of 'H+', 1 molecule of '6-Methylmercaptopurine', 1 molecule of 'Oxygen', and 1 molecule of 'NADPH' are present. At the end of this reaction, 1 molecule of 'NADP+', 1 molecule of '6-Mercaptopurine', 1 molecule of 'Formaldehyde', and 1 molecule of 'H2O' are present.

This reaction takes place in the 'smooth endoplasmic reticulum' and is mediated by the 'oxygen binding activity' of 'Cytochrome P450 1A2 '.
Reaction - small molecule participants:
CH2O [endoplasmic reticulum lumen]
H2O [endoplasmic reticulum lumen]
NADP+ [endoplasmic reticulum lumen]
6MP [endoplasmic reticulum lumen]
O2 [endoplasmic reticulum lumen]
H+ [endoplasmic reticulum lumen]
6MMP [endoplasmic reticulum lumen]
NADPH [endoplasmic reticulum lumen]
Reactome.org reaction link: R-HSA-76386

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Reaction input - small molecules:
dioxygen
ChEBI:15379
hydron
ChEBI:15378
6-methylthiopurine
ChEBI:28279
NADPH
ChEBI:16474
Reaction output - small molecules:
formaldehyde
ChEBI:16842
water
ChEBI:15377
NADP(+)
ChEBI:18009
purine-6-thiol
ChEBI:2208
Reactome.org link: R-HSA-76386