1s19
From Proteopedia
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Crystal structure of VDR ligand binding domain complexed to calcipotriol.
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Overview
The plethora of actions of 1alpha,25(OH)(2)D(3) in various systems, suggested wide clinical applications of vitamin D nuclear receptor (VDR), ligands in treatments of inflammation, dermatological indication, osteoporosis, cancers, and autoimmune diseases. More than 3000 vitamin D, analogues have been synthesized in order to reduce the calcemic side, effects while maintaining the transactivation potency of these ligands., Here, we report the crystal structures of VDR ligand binding domain bound, to two vitamin D agonists of therapeutical interest, calcipotriol and, seocalcitol, which are characterized by their side chain modifications., These structures show the conservation of the VDR structure and the, adaptation of the side chain anchored by hydroxyl moieties. The structure, of VDR-calcipotriol helps us to understand the structural basis for for, the switching of calcipotriol to a receptor antagonist by further side, chain modification. The VDR-seocalcitol structure, in comparison with the, structure of VDR-KH1060, a superagonist ligand closely related to, seocalcitol, shows adaptation of the D ring and position of C-21 in order, to adapt its more rigid side chain.
Disease
Known diseases associated with this structure: Osteoporosis, involutional, 166710 (1) OMIM:[601769], Rickets, vitamin D-resistant, type IIA OMIM:[601769]
About this Structure
1S19 is a Single protein structure of sequence from Homo sapiens with MC9 as ligand. Full crystallographic information is available from OCA.
Reference
Crystal structures of the vitamin D nuclear receptor liganded with the vitamin D side chain analogues calcipotriol and seocalcitol, receptor agonists of clinical importance. Insights into a structural basis for the switching of calcipotriol to a receptor antagonist by further side chain modification., Tocchini-Valentini G, Rochel N, Wurtz JM, Moras D, J Med Chem. 2004 Apr 8;47(8):1956-61. PMID:15055995
Page seeded by OCA on Mon Nov 12 19:09:10 2007
