7qpp
From Proteopedia
High resolution structure of human VDR ligand binding domain in complex with calcitriol
Structural highlights
DiseaseVDR_HUMAN Defects in VDR are the cause of rickets vitamin D-dependent type 2A (VDDR2A) [MIM:277440. A disorder of vitamin D metabolism resulting in severe rickets, hypocalcemia and secondary hyperparathyroidism. Most patients have total alopecia in addition to rickets.[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] FunctionVDR_HUMAN Nuclear hormone receptor. Transcription factor that mediates the action of vitamin D3 by controlling the expression of hormone sensitive genes. Regulates transcription of hormone sensitive genes via its association with the WINAC complex, a chromatin-remodeling complex. Recruited to promoters via its interaction with the WINAC complex subunit BAZ1B/WSTF, which mediates the interaction with acetylated histones, an essential step for VDR-promoter association. Plays a central role in calcium homeostasis.[11] [12] [13] [14] Publication Abstract from PubMed1alpha,25-dihydroxyvitamin D3 (1,25D(3)) regulates many physiological processes in vertebrates by binding to the vitamin D receptor (VDR). Phylogenetic analysis indicates that jawless fishes are the most basal vertebrates exhibiting a VDR gene. To elucidate the mechanism driving VDR activation during evolution, we determined the crystal structure of the VDR ligand-binding domain (LBD) complex from the basal vertebratePetromyzon marinus, sea lamprey (lVDR). Comparison of three-dimensional crystal structures of the lVDR-1,25D(3) complex with higher vertebrate VDR-1,25D(3) structures suggests that 1,25D(3) binds to lVDR similarly to human VDR, but with unique features for lVDR around linker regions between H11 and H12 and between H9 and H10. These structural differences may contribute to the marked species differences in transcriptional responses. Furthermore, residue co-evolution analysis of VDR across vertebrates identifies amino acid positions in H9 and the large insertion domain VDR LBD specific as correlated. Advances in Vitamin D Receptor Function and Evolution Based on the 3D Structure of the Lamprey Ligand-Binding Domain.,Sigueiro R, Bianchetti L, Peluso-Iltis C, Chalhoub S, Dejaegere A, Osz J, Rochel N J Med Chem. 2022 Apr 14;65(7):5821-5829. doi: 10.1021/acs.jmedchem.2c00171. Epub , 2022 Mar 18. PMID:35302785[15] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. Loading citation details.. Citations No citations found References
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