Abstract
Rat kidney cytosol contains a 3.3 S high affinity binding component for 1,25-dihydroxyvitamin D3 as detected by DNA-cellulose chromatography and subsequent sucrose gradient analysis. The semipurified aporeceptor demonstrates specificity for 1,25-dihydroxyvitamin D3 and an apparent dissociation constant for this sterol-hormone of 3.4 × 10-10M at 25°C. The physicochemical properties of this binding component are in agreement with those observed for the chick intestinal 1,25-dihydroxyvitamin D3 receptor, suggesting that this component may function as a specific receptor for the hormone in the kidney.
Original language | English (US) |
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Pages (from-to) | 1057-1063 |
Number of pages | 7 |
Journal | Biochemical and Biophysical Research Communications |
Volume | 90 |
Issue number | 3 |
DOIs | |
State | Published - Oct 12 1979 |
ASJC Scopus subject areas
- Biophysics
- Biochemistry
- Molecular Biology
- Cell Biology