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Crystal structure of human P-cadherin (ss-X-dimer pocket I)
Structural highlights
DiseaseCADH3_HUMAN Hypotrichosis with juvenile macular degeneration;EEM syndrome. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. FunctionCADH3_HUMAN Cadherins are calcium-dependent cell adhesion proteins. They preferentially interact with themselves in a homophilic manner in connecting cells; cadherins may thus contribute to the sorting of heterogeneous cell types. Publication Abstract from PubMedOrderly assembly of classical cadherins governs cell adhesion and tissue maintenance. A key event is the strand-swap dimerization of the extracellular ectodomains of two cadherin molecules from apposing cells. Here we have determined crystal structures of P-cadherin in six different conformational states to elaborate a motion picture of its adhesive dimerization at the atomic level. The snapshots revealed that cell-adhesive dimerization is facilitated by several intermediate states collectively termed X-dimer in analogy to other classical cadherins. Based on previous studies and on the combined structural, kinetic, thermodynamic, biochemical, and cellular data reported herein, we propose that the adhesive dimerization of human P-cadherin is achieved by a stepwise mechanism analogous to that of assembly chaperones. This mechanism, applicable to type I classical cadherins, confers high specificity and fast association rates. We expect these findings to guide innovative therapeutic approaches targeting P-cadherin in cancer. Adhesive Dimerization of Human P-Cadherin Catalyzed by a Chaperone-like Mechanism.,Kudo S, Caaveiro JM, Tsumoto K Structure. 2016 Sep 6;24(9):1523-1536. doi: 10.1016/j.str.2016.07.002. Epub 2016 , Aug 18. PMID:27545624[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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