RHEA:47289
| Reaction with net flow from left to right. help_outline | |
| Enzymes help_outline | 12 proteins (UniProtKB) |
Reaction participants Show >> << Hide
- Name help_outline 17β-estradiol Identifier CHEBI:16469 (Beilstein: 1914275; CAS: 50-28-2) help_outline Charge 0 Formula C18H24O2 InChIKeyhelp_outline VOXZDWNPVJITMN-ZBRFXRBCSA-N SMILEShelp_outline [H][C@]12CC[C@]3(C)[C@@H](O)CC[C@@]3([H])[C@]1([H])CCc1cc(O)ccc21 2D coordinates Mol file for the small molecule Search links Involved in 17 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline O2 Identifier CHEBI:15379 (CAS: 7782-44-7) help_outline Charge 0 Formula O2 InChIKeyhelp_outline MYMOFIZGZYHOMD-UHFFFAOYSA-N SMILEShelp_outline O=O 2D coordinates Mol file for the small molecule Search links Involved in 2,235 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
reduced [NADPH—hemoprotein reductase]
Identifier
RHEA-COMP:11964
Reactive part
help_outline
- Name help_outline FMNH2 Identifier CHEBI:57618 (Beilstein: 6258176) help_outline Charge -2 Formula C17H21N4O9P InChIKeyhelp_outline YTNIXZGTHTVJBW-SCRDCRAPSA-L SMILEShelp_outline Cc1cc2Nc3c([nH]c(=O)[nH]c3=O)N(C[C@H](O)[C@H](O)[C@H](O)COP([O-])([O-])=O)c2cc1C 2D coordinates Mol file for the small molecule Search links Involved in 603 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 7α-hydroxy-17β-estradiol Identifier CHEBI:87598 (CAS: 3398-11-6) help_outline Charge 0 Formula C18H24O3 InChIKeyhelp_outline CQPNIWHVQNCXHA-HTPGKPQGSA-N SMILEShelp_outline C1=C2C(C[C@H]([C@]3([C@@]4(CC[C@@H]([C@]4(CC[C@@]32[H])C)O)[H])[H])O)=CC(=C1)O 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge +1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 7,811 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (Beilstein: 3587155; CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 5,139 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
oxidized [NADPH—hemoprotein reductase]
Identifier
RHEA-COMP:11965
Reactive part
help_outline
- Name help_outline FMN Identifier CHEBI:58210 Charge -3 Formula C17H18N4O9P InChIKeyhelp_outline ANKZYBDXHMZBDK-SCRDCRAPSA-K SMILEShelp_outline C12=NC([N-]C(C1=NC=3C(N2C[C@@H]([C@@H]([C@@H](COP(=O)([O-])[O-])O)O)O)=CC(=C(C3)C)C)=O)=O 2D coordinates Mol file for the small molecule Search links Involved in 605 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Links to other resources
| RHEA:47288 | RHEA:47289 | RHEA:47290 | RHEA:47291 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Citations
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Characterization of the oxidative metabolites of 17beta-estradiol and estrone formed by 15 selectively expressed human cytochrome p450 isoforms.
Lee A.J., Cai M.X., Thomas P.E., Conney A.H., Zhu B.T.
We systematically characterized the oxidative metabolites of 17beta-estradiol and estrone formed by 15 human cytochrome P450 (CYP) isoforms. CYP1A1 had high activity for 17beta-estradiol 2-hydroxylation, followed by 15alpha-, 6alpha-, 4-, and 7alpha-hydroxylation. However, when estrone was the sub ... >> More
We systematically characterized the oxidative metabolites of 17beta-estradiol and estrone formed by 15 human cytochrome P450 (CYP) isoforms. CYP1A1 had high activity for 17beta-estradiol 2-hydroxylation, followed by 15alpha-, 6alpha-, 4-, and 7alpha-hydroxylation. However, when estrone was the substrate, CYP1A1 formed more 4-hydroxyestrone than 15alpha- or 6alpha-hydroxyestrone, with 2-hydroxyestrone as the major metabolite. CYP1A2 had the highest activity for the 2-hydroxylation of both 17beta-estradiol and estrone, although it also had considerable activity for their 4-hydroxylation (9-13% of 2-hydroxylation). CYP1B1 mainly catalyzed the formation of catechol estrogens, with 4-hydroxyestrogens predominant. CYP2A6, 2B6, 2C8, 2C9, 2C19, and 2D6 each showed a varying degree of low catalytic activity for estrogen 2-hydroxylation, whereas CYP2C18 and CYP2E1 did not show any detectable estrogen-hydroxylating activity. CYP3A4 had strong activity for the formation of 2-hydroxyestradiol, followed by 4-hydroxyestradiol and an unknown polar metabolite, and small amounts of 16alpha- and 16beta-hydroxyestrogens were also formed. The ratio of 4-to 2-hydroxylation of 17beta-estradiol or estrone with CYP3A4 was 0.22 or 0.51, respectively. CYP3A5 had similar catalytic activity for the formation of 2- and 4- hydroxyestrogens. Notably, CYP3A5 had an unusually high ratio of 4-to 2-hydroxylation of 17beta-estradiol or estrone (0.53 or 1.26, respectively). CYP3A4 and 3A5 also catalyzed the formation of nonpolar estrogen metabolite peaks (chromatographically less polar than estrone). CYP3A7 had a distinct catalytic activity for the 16alpha-hydroxylation of estrone, but not 17beta-estradiol. CYP4A11 had little catalytic activity for the metabolism of 17beta-estradiol and estrone. In conclusion, many human CYP isoforms are involved in the oxidative metabolism of 17beta-estradiol and estrone, with a varying degree of catalytic activity and distinct regioselectivity. << Less
Endocrinology 144:3382-3398(2003) [PubMed] [EuropePMC]
This publication is cited by 12 other entries.