25-Hydroxyvitamin D3 1-alpha-Hydroxylase
A mitochondrial cytochrome P450 enzyme that catalyzes the 1-alpha-hydroxylation of 25-hydroxyvitamin D3 (also known as 25-hydroxycholecalciferol) in the presence of molecular oxygen and NADPH-FERRIHEMOPROTEIN REDUCTASE. This enzyme, encoded by CYP27B1 gene, converts 25-hydroxyvitamin D3 to 1-alpha,25-dihydroxyvitamin D3 which is the active form of VITAMIN D in regulating bone growth and calcium metabolism. This enzyme is also active on plant 25-hydroxyvitamin D2 (ergocalciferol).
Year introduced: 2003 (1975)
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Subheadings:
Tree Number(s): D08.244.453.499.500, D08.244.453.915.400, D08.811.682.690.708.170.493.500, D08.811.682.690.708.170.915.400, D12.776.422.220.453.499.500, D12.776.422.220.453.915.400
MeSH Unique ID: D015090
Registry Number: EC 1.14.15.18
Entry Terms:
- 25 Hydroxyvitamin D3 1 alpha Hydroxylase
- 25-Hydroxycholecalciferol-1-Hydroxylase
- 25 Hydroxycholecalciferol 1 Hydroxylase
- 25-Hydroxycholecalciferol 1-Hydroxylase
- Calcidiol 1-Monooxygenase
- Calcidiol 1 Monooxygenase
- 25-Hydroxyvitamin D(3) 1 alpha-Hydroxylase
- 25-Hydroxyvitamin D2 1-hydroxylase
- 1-hydroxylase, 25-Hydroxyvitamin D2
- 25 Hydroxyvitamin D2 1 hydroxylase
- CYP27B1
- Cytochrome P-450 CYP27B1
- Cytochrome P 450 CYP27B1
- 25-Hydroxyergocalciferol 1-alpha-Hydroxylase
- 1-alpha-Hydroxylase, 25-Hydroxyergocalciferol
- 25 Hydroxyergocalciferol 1 alpha Hydroxylase
- 25-Hydroxyvitamin D 1-alpha-Hydroxylase
- 1-alpha-Hydroxylase, 25-Hydroxyvitamin D
- 25 Hydroxyvitamin D 1 alpha Hydroxylase
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