• Thumbnail for CYP2R1
    CYP2R1 is cytochrome P450 2R1, an enzyme which is the principal vitamin D 25-hydroxylase. In humans it is encoded by the CYP2R1 gene located on chromosome...
    9 KB (1,133 words) - 14:06, 24 January 2024
  • Thumbnail for Calcifediol
    This enzymatic 25-hydroxylase reaction is mostly due to the actions of CYP2R1, present in microsomes, although other enzymes such as mitochondrial CYP27A1...
    20 KB (1,953 words) - 16:13, 26 April 2024
  • Thumbnail for Ergocalciferol
    requires two hydroxylations to become active: the first in the liver by CYP2R1 to form 25-hydroxyergocalciferol (ercalcidiol or 25-OH D2), and the second...
    24 KB (1,969 words) - 16:30, 11 May 2024
  • Thumbnail for Vitamin D
    become active and bind to the VDR. Specifically, CYP27A1, CYP27B1, and CYP2R1 are involved in the activation of vitamin D, while CYP24A1 and CYP3A4 are...
    162 KB (17,763 words) - 22:27, 22 July 2024
  • Thumbnail for Vitamin D deficiency
    become active and bind to the VDR. Specifically, CYP27A1, CYP27B1, and CYP2R1 are involved in the activation of vitamin D, while CYP24A1 and CYP3A4 are...
    68 KB (7,908 words) - 17:24, 10 July 2024
  • HGNC:2631 P05181 3886 CYP2F1 HGNC:2632 P24903 3887 CYP2J2 HGNC:2634 P51589 3888 CYP2R1 HGNC:20580 Q6VVX0 3889 CYP2S1 HGNC:15654 Q96SQ9 3890 CYP2U1 HGNC:20582 Q7Z449...
    277 KB (17 words) - 23:17, 27 April 2024
  • Thumbnail for Cholecalciferol
    converted to its active form by two hydroxylations: the first in the liver, by CYP2R1 or CYP27A1, to form 25-hydroxycholecalciferol (calcifediol, 25-OH vitamin...
    41 KB (4,141 words) - 00:45, 7 June 2024
  • Thumbnail for Rickets
    activation VDDR1A: 25-Hydroxyvitamin D3 1-alpha-hydroxylase deficiency VDDR1B: CYP2R1 deficiency Type 2: resistance to calcitriol VDDR2A: calcitriol receptor...
    46 KB (4,730 words) - 10:45, 25 June 2024
  • CYP2B6, CYP2C8, CYP2C9, CYP2C18, CYP2C19, CYP2D6, CYP2E1, CYP2F1, CYP2J2, CYP2R1, CYP2S1, CYP2U1, CYP2W1 Too many to list CYP3 drug and steroid (including...
    42 KB (4,485 words) - 22:27, 17 July 2024
  • 608611; RPIA Rickets due to defect in vitamin D 25-hydroxylation; 600081; CYP2R1 Rickets, vitamin D-resistant, type IIA; 277440; VDR RIDDLE syndrome; 611943;...
    234 KB (18,877 words) - 15:43, 9 May 2024