SPECIFIC CYTOSOL RECEPTORS FOR 1,25-DIHYDROXYVITAMIN D3 IN HUMAN INTESTINE

被引:61
作者
WECKSLER, WR [1 ]
MASON, RS [1 ]
NORMAN, AW [1 ]
机构
[1] SIDNEY HOSP, DEPT MED, SIDNEY 201, NEW S WALES, AUSTRALIA
关键词
D O I
10.1210/jcem-48-4-715
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Human intestine is shown to contain a specific, high affinity cytosol receptor or binding protein for 1, 25-(OH)2-vitamin D [1, 25(OH)2D3]. This receptor is a protein which sediments at 3.5S on sucrose gradients containing 0.3 M KC1. The receptor binds 1, 25(OH)2D3 with a Kd of approximately 2 x 10‑10 M at 4°C. Competition binding studies using structural analogs of 1, 25(OH)2D3 indicate that the relative specificity of the receptor is 1, 25(OH)2D3 > 1, 24R, 25(OH)3D3 > 25OHD3 1 24R, 25(OH)2D3. © 1979 by The Endocrine Society.
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页码:715 / 717
页数:3
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