1v8k: Difference between revisions
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==The Crystal Structure of the Minimal Functional Domain of the Microtubule Destabilizer KIF2C Complexed with Mg-AMPPNP== | ==The Crystal Structure of the Minimal Functional Domain of the Microtubule Destabilizer KIF2C Complexed with Mg-AMPPNP== | ||
<StructureSection load='1v8k' size='340' side='right' caption='[[1v8k]], [[Resolution|resolution]] 2.25Å' scene=''> | <StructureSection load='1v8k' size='340' side='right'caption='[[1v8k]], [[Resolution|resolution]] 2.25Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1v8k]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[1v8k]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V8K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1V8K FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.25Å</td></tr> | ||
<tr id=' | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</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=1v8k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1v8k OCA], [https://pdbe.org/1v8k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1v8k RCSB], [https://www.ebi.ac.uk/pdbsum/1v8k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1v8k ProSAT]</span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/KIF2C_MOUSE KIF2C_MOUSE] In complex with KIF18B, constitutes the major microtubule plus-end depolymerizing activity in mitotic cells (By similarity). Regulates the turnover of microtubules at the kinetochore and functions in chromosome segregation during mitosis (By similarity). | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/v8/1v8k_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/v8/1v8k_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
| Line 31: | Line 31: | ||
==See Also== | ==See Also== | ||
*[[Kinesin|Kinesin]] | *[[Kinesin 3D Structures|Kinesin 3D Structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Hirokawa | [[Category: Mus musculus]] | ||
[[Category: Nitta | [[Category: Hirokawa N]] | ||
[[Category: Ogawa | [[Category: Nitta R]] | ||
[[Category: Okada | [[Category: Ogawa T]] | ||
[[Category: Okada Y]] | |||
Latest revision as of 02:59, 28 December 2023
The Crystal Structure of the Minimal Functional Domain of the Microtubule Destabilizer KIF2C Complexed with Mg-AMPPNPThe Crystal Structure of the Minimal Functional Domain of the Microtubule Destabilizer KIF2C Complexed with Mg-AMPPNP
Structural highlights
FunctionKIF2C_MOUSE In complex with KIF18B, constitutes the major microtubule plus-end depolymerizing activity in mitotic cells (By similarity). Regulates the turnover of microtubules at the kinetochore and functions in chromosome segregation during mitosis (By similarity). Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedUnlike other kinesins, middle motor domain-type kinesins depolymerize the microtubule from its ends. To elucidate its mechanism, we solved the X-ray crystallographic structure of KIF2C, a murine member of this family. Three major class-specific features were identified. The class-specific N-terminal neck adopts a long and rigid helical structure extending out vertically into the interprotofilament groove. This structure explains its dual roles in targeting to the end of the microtubule and in destabilization of the lateral interaction of the protofilament. The loop L2 forms a unique finger-like structure, long and rigid enough to reach the next tubulin subunit to stabilize the peeling of the protofilament. The open conformation of the switch I loop could be reversed by the shift of the microtubule binding L8 loop, suggesting its role as the sensor to trigger ATP hydrolysis. Mutational analysis supports these structural implications. A common mechanism for microtubule destabilizers-M type kinesins stabilize curling of the protofilament using the class-specific neck and loops.,Ogawa T, Nitta R, Okada Y, Hirokawa N Cell. 2004 Feb 20;116(4):591-602. PMID:14980225[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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