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Literature summary extracted from

  • Nakamura, Y.; Eto, T.A.; Taniguchi, T.; Miyamoto, K.; Nagatomo, J.; Shiotsuki, H.; Sueta, H.; Higashi, S.; Okuda, K.I.; Setoguchi, T.
    Purification and characterization of 25-hydroxyvitamin D3 1alpha-hydroxylase from rat kidney mitochondria (1997), FEBS Lett., 419, 45-48.
    View publication on PubMed

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
1.14.15.18 mitochondrion
-
Rattus norvegicus 5739
-

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
1.14.15.18 55000
-
gel filtration Rattus norvegicus

Organism

EC Number Organism UniProt Comment Textmining
1.14.15.18 Rattus norvegicus
-
-
-

Reaction

EC Number Reaction Comment Organism Reaction ID
1.14.15.18 calcidiol + 2 reduced adrenodoxin + 2 H+ + O2 = calcitriol + 2 oxidized adrenodoxin + H2O reconstituted with cytochrome P-450, adrenal ferredoxin, i.e. adrenodoxin, and adrenodoxin reductase Rattus norvegicus

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.14.15.18 kidney
-
Rattus norvegicus
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.14.15.18 0.0048
-
purified enzyme Rattus norvegicus

Storage Stability

EC Number Storage Stability Organism
1.14.15.18 -30°C, stable without significant loss of activity for at least 6 months Rattus norvegicus
1.14.15.18 0-4°C, rapid loss of activity Rattus norvegicus

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.14.15.18 25-hydroxycholecalciferol + NADPH + O2
-
Rattus norvegicus calcitriol + NADP+ + H2O
-
?
1.14.15.18 calcidiol + NADPH + O2 highly specific for calcidiol, calcidiol is identical with 25-hydroxycholecalciferol Rattus norvegicus calcitriol + NADP+ + H2O calcitriol is identical with 1,25-dihydroxycholecalciferol ?

Turnover Number [1/s]

EC Number Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
1.14.15.18 0.0733
-
25-hydroxycholecalciferol
-
Rattus norvegicus

Cofactor

EC Number Cofactor Comment Organism Structure
1.14.15.18 NADPH
-
Rattus norvegicus