1α,25-Dihydroxyvitamin D3-3β-bromoacetate, an Affinity-Labeling Analog of 1α,25-Dihydroxyvitamin D3 Receptor
作者:R. Ray、S. Ray、M.F. Holick
DOI:10.1006/bioo.1994.1021
日期:1994.9
In this communication we describe the synthesis of 1 alpha,25-dihydroxyvitamin D-3-3 beta-bromoacetate [1,25(OH)(2)-BE], an analog of 1 alpha,25-dihydroxyvitamin D-3 [1,25(OH)(2)D-3], as a part of our ongoing interest in characterizing the hormone-binding domain of the 1 alpha,25-dihydroxyvitamin D-3 receptor (VDR). We carried out several binding studies of 1,25(OH)(2)-BE with chick intestinal VDR preparations to demonstrate that 1,25(OH)(2)-BE is capable of blocking the entry of 1,25(OH)(2)D-3 into its binding pocket and possibly covalently linking to the VDR molcule. (C) 1994 Academic Press, Inc.