View source for 5mv8


==Structure of human Myosin 7b C-terminal MyTH4-FERM domain in complex with harmonin-a PDZ3 domain==
<StructureSection load='5mv8' size='340' side='right'caption='[[5mv8]], [[Resolution|resolution]] 1.88&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5mv8]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5MV8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5MV8 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.88&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5mv8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5mv8 OCA], [https://pdbe.org/5mv8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5mv8 RCSB], [https://www.ebi.ac.uk/pdbsum/5mv8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5mv8 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/MYO7B_HUMAN MYO7B_HUMAN] Myosins are actin-based motor molecules with ATPase activity. Their highly divergent tails are presumed to bind to membranous compartments, which would be moved relative to actin filaments. As part of the intermicrovillar adhesion complex/IMAC plays a role in epithelial brush border differentiation, controlling microvilli organization and length. May link the complex to the actin core bundle of microvilli (Probable).<ref>PMID:24725409</ref> <ref>PMID:26812018</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Cadherin linkages between adjacent stereocilia and microvilli are essential for mechanotransduction and maintaining their organization. They are anchored to actin through interaction of their cytoplasmic domains with related tripartite complexes consisting of a class VII myosin and adaptor proteins: Myo7a/SANS/Harmonin in stereocilia and Myo7b/ANKS4B/Harmonin in microvilli. Here, we determine high-resolution structures of Myo7a and Myo7b C-terminal MyTH4-FERM domain (MF2) and unveil how they recognize harmonin using a novel binding mode. Systematic definition of interactions between domains of the tripartite complex elucidates how the complex assembles and prevents possible self-association of harmonin-a. Several Myo7a deafness mutants that map to the surface of MF2 disrupt harmonin binding, revealing the molecular basis for how they impact the formation of the tripartite complex and disrupt mechanotransduction. Our results also suggest how switching between different harmonin isoforms can regulate the formation of networks with Myo7a motors and coordinate force sensing in stereocilia.

Myosin 7 and its adaptors link cadherins to actin.,Yu IM, Planelles-Herrero VJ, Sourigues Y, Moussaoui D, Sirkia H, Kikuti C, Stroebel D, Titus MA, Houdusse A Nat Commun. 2017 Jun 29;8:15864. doi: 10.1038/ncomms15864. PMID:28660889<ref>PMID:28660889</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5mv8" style="background-color:#fffaf0;"></div>

==See Also==
*[[Harmonin|Harmonin]]
*[[Myosin 3D Structures|Myosin 3D Structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Houdusse A]]
[[Category: Sourigues Y]]
[[Category: Titus MA]]
[[Category: Yu I]]