4cid: Difference between revisions
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==Structural insights into the N-terminus of the EHD2 ATPase== | |||
<StructureSection load='4cid' size='340' side='right' caption='[[4cid]], [[Resolution|resolution]] 3.00Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4cid]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4CID OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4CID FirstGlance]. <br> | |||
==Function== | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | ||
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Dynamin_GTPase Dynamin GTPase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.5.5 3.6.5.5] </span></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4cid FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4cid OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4cid RCSB], [http://www.ebi.ac.uk/pdbsum/4cid PDBsum]</span></td></tr> | |||
</table> | |||
== Function == | |||
[[http://www.uniprot.org/uniprot/EHD2_MOUSE EHD2_MOUSE]] Plays a role in membrane reorganization in response to nucleotide hydrolysis. Binds to liposomes and deforms them into tubules. Plays a role in membrane trafficking between the plasma membrane and endosomes. Important for the internalization of GLUT4. Required for normal fusion of myoblasts to skeletal muscle myotubes. Binds ATP; does not bind GTP.<ref>PMID:14676205</ref> <ref>PMID:18502764</ref> | [[http://www.uniprot.org/uniprot/EHD2_MOUSE EHD2_MOUSE]] Plays a role in membrane reorganization in response to nucleotide hydrolysis. Binds to liposomes and deforms them into tubules. Plays a role in membrane trafficking between the plasma membrane and endosomes. Important for the internalization of GLUT4. Required for normal fusion of myoblasts to skeletal muscle myotubes. Binds ATP; does not bind GTP.<ref>PMID:14676205</ref> <ref>PMID:18502764</ref> | ||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The dynamin-related Eps15-homology domain-containing protein 2 (EHD2) is a membrane-remodeling ATPase that regulates the dynamics of caveolae. Here, we established an electron paramagnetic resonance (EPR) approach to characterize structural features of membrane-bound EHD2. We show that residues at the tip of the helical domain can insert into the membrane and may create membrane curvature by a wedging mechanism. Using EPR and X-ray crystallography, we found that the N terminus is folded into a hydrophobic pocket of the GTPase domain in solution and can be released into the membrane. Cryoelectron microscopy demonstrated that the N terminus is not essential for oligomerization of EHD2 into a membrane-anchored scaffold. Instead, we found a function of the N terminus in regulating targeting and stable association of EHD2 to caveolae. Our data uncover an unexpected, membrane-induced regulatory switch in EHD2 and demonstrate the versatility of EPR to study structure and function of dynamin superfamily proteins. | |||
Structural Insights into Membrane Interaction and Caveolar Targeting of Dynamin-like EHD2.,Shah C, Hegde BG, Moren B, Behrmann E, Mielke T, Moenke G, Spahn CM, Lundmark R, Daumke O, Langen R Structure. 2014 Feb 4. pii: S0969-2126(14)00007-0. doi:, 10.1016/j.str.2013.12.015. PMID:24508342<ref>PMID:24508342</ref> | |||
== | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Dynamin GTPase]] | [[Category: Dynamin GTPase]] | ||
[[Category: Daumke, O | [[Category: Lk3 transgenic mice]] | ||
[[Category: Shah, C | [[Category: Daumke, O]] | ||
[[Category: Shah, C]] | |||
[[Category: Dynamin superfamily]] | [[Category: Dynamin superfamily]] | ||
[[Category: Hydrolase]] | [[Category: Hydrolase]] | ||
[[Category: Mechanochemical atpase]] | [[Category: Mechanochemical atpase]] | ||
Revision as of 18:00, 24 December 2014
Structural insights into the N-terminus of the EHD2 ATPase
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