Specific interactions between vitamin-D receptor and its ligands:ab initio molecular orbital calculations in water

Publication date: Available online 27 February 2017
Source:The Journal of Steroid Biochemistry and Molecular Biology
Author(s): Ryosuke Takeda, Ittetsu Kobayashi, Kanako Shimamura, Hiromi Ishimura, Ryushi Kadoya, Kentaro Kawai, Atsushi Kittaka, Midori Takimoto-Kamimura, Noriyuki Kurita
Vitamin D is recognized to play important roles not only in the bone metabolism and the regulation of Ca amount in the blood but also in the onset of immunological diseases. These physiological actions caused by vitamin D are triggered by the specific interaction between vitamin D receptor (VDR) and vitamin D. In the present study, we investigated the interactions between VDR and vitamin D derivatives using ab initio molecular simulation, in order to elucidate the reason for the significant difference in their effects on VDR activity. Based on the results simulated, we elucidated which parts of the derivatives and which residues of VDR mainly contribute to the specific binding between VDR and the derivatives at an electronic level. This finding will be helpful for proposing new vitamin D derivatives as a potent modulator or inhibitor against VDR.



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