4atu: Difference between revisions
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==Human doublecortin N-DC repeat plus linker, and tubulin (2XRP) docked into an 8A cryo-EM map of doublecortin-stabilised microtubules reconstructed in absence of kinesin== | |||
<SX load='4atu' size='340' side='right' viewer='molstar' caption='[[4atu]], [[Resolution|resolution]] 8.30Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4atu]] is a 9 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4ATU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4ATU FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 8.3Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</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=4atu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4atu OCA], [https://pdbe.org/4atu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4atu RCSB], [https://www.ebi.ac.uk/pdbsum/4atu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4atu ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/TBB2B_BOVIN TBB2B_BOVIN] Tubulin is the major constituent of microtubules. It binds two moles of GTP, one at an exchangeable site on the beta chain and one at a non-exchangeable site on the alpha chain (By similarity). | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Doublecortin (Dcx) defines a growing family of microtubule (MT)-associated proteins (MAPs) involved in neuronal migration and process outgrowth. We show that Dcx is essential for the function of Kif1a, a kinesin-3 motor protein that traffics synaptic vesicles. Neurons lacking Dcx and/or its structurally conserved paralogue, doublecortin-like kinase 1 (Dclk1), show impaired Kif1a-mediated transport of Vamp2, a cargo of Kif1a, with decreased run length. Human disease-associated mutations in Dcx's linker sequence (e.g., W146C, K174E) alter Kif1a/Vamp2 transport by disrupting Dcx/Kif1a interactions without affecting Dcx MT binding. Dcx specifically enhances binding of the ADP-bound Kif1a motor domain to MTs. Cryo-electron microscopy and subnanometer-resolution image reconstruction reveal the kinesin-dependent conformational variability of MT-bound Dcx and suggest a model for MAP-motor crosstalk on MTs. Alteration of kinesin run length by MAPs represents a previously undiscovered mode of control of kinesin transport and provides a mechanism for regulation of MT-based transport by local signals. | |||
Molecular basis for specific regulation of neuronal Kinesin-3 motors by doublecortin family proteins.,Liu JS, Schubert CR, Fu X, Fourniol FJ, Jaiswal JK, Houdusse A, Stultz CM, Moores CA, Walsh CA Mol Cell. 2012 Sep 14;47(5):707-21. doi: 10.1016/j.molcel.2012.06.025. Epub 2012 , Aug 1. PMID:22857951<ref>PMID:22857951</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4atu" style="background-color:#fffaf0;"></div> | |||
== | ==See Also== | ||
[[ | *[[Tubulin 3D Structures|Tubulin 3D Structures]] | ||
== References == | |||
<references/> | |||
__TOC__ | |||
</SX> | |||
[[Category: Bos taurus]] | [[Category: Bos taurus]] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Fourniol | [[Category: Fourniol FJ]] | ||
[[Category: Fu | [[Category: Fu X]] | ||
[[Category: Houdusse | [[Category: Houdusse A]] | ||
[[Category: Jaiswal | [[Category: Jaiswal JK]] | ||
[[Category: Liu | [[Category: Liu JS]] | ||
[[Category: Moores | [[Category: Moores CA]] | ||
[[Category: Schubert | [[Category: Schubert CR]] | ||
[[Category: Stultz | [[Category: Stultz CM]] | ||
[[Category: Walsh | [[Category: Walsh CA]] | ||