3trt: Difference between revisions
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[[ | ==Crystal structure of stabilised vimentin coil2 fragment== | ||
<StructureSection load='3trt' size='340' side='right' caption='[[3trt]], [[Resolution|resolution]] 2.30Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3trt]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TRT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3TRT FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NH4:AMMONIUM+ION'>NH4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br> | |||
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3klt|3klt]]</td></tr> | |||
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">VIM ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3trt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3trt OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3trt RCSB], [http://www.ebi.ac.uk/pdbsum/3trt PDBsum]</span></td></tr> | |||
<table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Cytoskeletal intermediate filaments (IFs) assemble from the elementary dimers based on a segmented alpha-helical coiled-coil (CC) structure. Crystallographic studies of IF protein fragments remain the main route to access their atomic structure. To enable crystallization, such fragments must be sufficiently short. As a consequence, they often fail to assemble into the correct CC dimers. In particular, human vimentin fragment D3 corresponding to the first half of coil2 (residues 261-335) stays monomeric in solution. We have induced its dimerization via introducing a disulfide link between two cysteines engineered in the hydrophobic core of the CC close to its N-terminus. The 2.3A crystal structure of the D3st (stabilized) fragment reveals a mostly parallel alpha-helical bundle structure in its N-terminal half which smoothly continues into a left-handed CC towards the C-terminus. This provides a direct evidence for a continuously alpha-helical structure of the coil2 segment and disproves the previously suggested existence of linker L2 separating it into two left-handed CCs. The general principles of CC dimer stabilization by disulfide introduction are also discussed. | |||
Stabilization of vimentin coil2 fragment via an engineered disulfide.,Chernyatina AA, Strelkov SV J Struct Biol. 2012 Jan;177(1):46-53. Epub 2011 Nov 18. PMID:22119849<ref>PMID:22119849</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
< | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Chernyatina, A A.]] | [[Category: Chernyatina, A A.]] | ||
Revision as of 09:24, 11 June 2014
Crystal structure of stabilised vimentin coil2 fragment
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