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1.14.15.16: vitamin D3 24-hydroxylase

This is an abbreviated version!
For detailed information about vitamin D3 24-hydroxylase, go to the full flat file.

Word Map on EC 1.14.15.16

Reaction

calcidiol
+ 2 reduced adrenodoxin + 2 H+ +
O2
=
secalciferol
+ 2 oxidized adrenodoxin +
H2O

Synonyms

1,25-(OH)2D3-24-hydroxylase, 1,25-dihydroxyvitamin D3 24-hydroxylase, 1alpha,25-dihydroxyvitamin D3 24-hydroxylase, 24-hydroxylase, 24-OHase, 24OHase, 25-hydroxyvitamin D-24-hydroxylase, 25-hydroxyvitamin D3-24-hydroxylase, 25-OH-D3-24-hydroxylase, CYP24A1, cytochrome P450 24A1, EC 1.14.13.126, P450cc24, vitamin D 24-hydroxylase, vitamin D-24-hydroxylase

ECTree

     1 Oxidoreductases
         1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
             1.14.15 With reduced iron-sulfur protein as one donor, and incorporation of one atom of oxygen into the other donor
                1.14.15.16 vitamin D3 24-hydroxylase

Activating Compound

Activating Compound on EC 1.14.15.16 - vitamin D3 24-hydroxylase

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ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
1alpha,25-dihydroxyvitamin D3
-
renal 24-hydroxylase is significantly stimulated by 1alpha,25-dihydroxyvitamin D3 treatment in both normal and Hyp mice. In normal mice, 1alpha,25-dihydroxyvitamin D3 treatment is more effective than calcium in turning on 24-hydroxylase activity. In Hyp mice, treatment with calcium plus 1alpha,25-dihydroxyvitamin D3 results in a greater increase in 24-hydroxylase than treatment with either agent alone. 24-hydroxylase is 3fold, and 8fold greater in Hyp mice relative to normal treated with 1alpha,25-dihydroxyvitamin D3, and calcium plus 1alpha,25-dihydroxyvitamin D3, respectively
adrenodoxin
-
required for activity of the recombinant enzyme
-
adrenodoxin reductase
-
required for activity of the recombinant enzyme
-
calcitriol
-
calcitriol increases its own degradation in renal failure by increasing the enzymatic activity of 24-hydroxylase