6cv7

Mouse Protocadherin-15 Extracellular Cadherin Domains 1 through 3

spinqualitylabelsall models 6cv7, resolution 1.69Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6cv7 is a 1 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.692Å Ligands: CA, EDO, MAN, NAG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease PCD15_MOUSE Defects in Pcdh15 are the cause of the Ames waltzer (av) phenotype. It is characterized by deafness and a balance disorder, associated with the degeneration of inner ear neuroepithelia. Function PCD15_MOUSE Calcium-dependent cell-adhesion protein. Required for inner ear neuroepithelial cell elaboration and cochlear function. Probably involved in the maintenance of normal retinal function. Publication Abstract from PubMed The tip link, a filament formed by protocadherin 15 (PCDH15) and cadherin 23, conveys mechanical force from sound waves and head movement to open hair-cell mechanotransduction channels. Tip-link cadherins are thought to have acquired structural features critical for their role in mechanotransduction. Here, we biophysically and structurally characterize the unusual cis-homodimeric architecture of PCDH15. We show that PCDH15 molecules form double-helical assemblies through cis-dimerization interfaces in the extracellular cadherin EC2-EC3 domain region and in a unique membrane-proximal domain. Electron microscopy studies visualize the cis-dimeric PCDH15 assembly and reveal the PCDH15 extracellular domain as a parallel double helix with cis cross-bridges at the two locations we defined. The helical configuration suggests the potential for elasticity through helix winding and unwinding. Functional studies in hair cells show that mutations that perturb PCDH15 dimerization contacts affect mechanotransduction. Together, these data reveal the cis-dimeric architecture of PCDH15 and show that dimerization is critical for sensing mechanical stimuli. Mechanotransduction by PCDH15 Relies on a Novel cis-Dimeric Architecture.,Dionne G, Qiu X, Rapp M, Liang X, Zhao B, Peng G, Katsamba PS, Ahlsen G, Rubinstein R, Potter CS, Carragher B, Honig B, Muller U, Shapiro L Neuron. 2018 Aug 8;99(3):480-492.e5. doi: 10.1016/j.neuron.2018.07.006. Epub 2018, Jul 26. PMID:30057206 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cadherin 3D structures

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