Enzymes
| UniProtKB help_outline | 4 proteins |
Reaction participants Show >> << Hide
- Name help_outline calciol Identifier CHEBI:28940 (Beilstein: 2339331; CAS: 67-97-0) help_outline Charge 0 Formula C27H44O InChIKeyhelp_outline QYSXJUFSXHHAJI-YRZJJWOYSA-N SMILEShelp_outline [H][C@@]1(CC[C@]2([H])[C@]1(C)CCC\C2=C/C=C1/C[C@@H](O)CCC1=C)[C@H](C)CCCC(C)C 2D coordinates Mol file for the small molecule Search links Involved in 7 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 9,176 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 2,648 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
reduced [adrenodoxin]
Identifier
RHEA-COMP:9998
Reactive part
help_outline
- Name help_outline [2Fe-2S]1+ Identifier CHEBI:33738 Charge 1 Formula Fe2S2 InChIKeyhelp_outline MAGIRAZQQVQNKP-UHFFFAOYSA-N SMILEShelp_outline S1[Fe]S[Fe+]1 2D coordinates Mol file for the small molecule Search links Involved in 236 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline calcidiol Identifier CHEBI:17933 (Beilstein: 4270041; CAS: 19356-17-3) help_outline Charge 0 Formula C27H44O2 InChIKeyhelp_outline JWUBBDSIWDLEOM-DTOXIADCSA-N SMILEShelp_outline [H][C@@]1(CC[C@]2([H])[C@]1(C)CCC\C2=C/C=C1/C[C@@H](O)CCC1=C)[C@H](C)CCCC(C)(C)O 2D coordinates Mol file for the small molecule Search links Involved in 10 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 6,048 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
oxidized [adrenodoxin]
Identifier
RHEA-COMP:9999
Reactive part
help_outline
- Name help_outline [2Fe-2S]2+ Identifier CHEBI:33737 Charge 2 Formula Fe2S2 InChIKeyhelp_outline XSOVBBGAMBLACL-UHFFFAOYSA-N SMILEShelp_outline S1[Fe+]S[Fe+]1 2D coordinates Mol file for the small molecule Search links Involved in 236 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:46588 | RHEA:46589 | RHEA:46590 | RHEA:46591 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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Metabolism of vitamin D by human microsomal CYP2R1.
Shinkyo R., Sakaki T., Kamakura M., Ohta M., Inouye K.
The activation of vitamin D requires 25-hydroxylation in the liver and 1alpha-hydroxylation in the kidney. However, it remains unclear which enzyme is relevant to vitamin D 25-hydroxylation. Recently, human CYP2R1 has been reported to be a potential candidate for a hepatic vitamin D 25-hydroxylase ... >> More
The activation of vitamin D requires 25-hydroxylation in the liver and 1alpha-hydroxylation in the kidney. However, it remains unclear which enzyme is relevant to vitamin D 25-hydroxylation. Recently, human CYP2R1 has been reported to be a potential candidate for a hepatic vitamin D 25-hydroxylase. Thus, vitamin D metabolism by CYP2R1 was compared with human mitochondrial CYP27A1, which used to be considered a physiologically important vitamin D(3) 25-hydroxylase. A clear difference was observed between CYP2R1 and CYP27A1 in the metabolism of vitamin D(2). CYP2R1 hydroxylated vitamin D(2) at the C-25 position while CYP27A1 hydroxylated it at positions C-24 and C-27. The K(m) and k(cat) values for the CYP2R1-dependent 25-hydroxylation activity toward vitamin D(3) were 0.45microM and 0.97min(-1), respectively. The k(cat)/K(m) value of CYP2R1 was 26-fold higher than that of CYP27A1. These results strongly suggest that CYP2R1 plays a physiologically important role in the vitamin D 25-hydroxylation in humans. << Less
Biochem. Biophys. Res. Commun. 324:451-457(2004) [PubMed] [EuropePMC]
This publication is cited by 6 other entries.