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1dfc

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Revision as of 09:19, 11 September 2015

CRYSTAL STRUCTURE OF HUMAN FASCIN, AN ACTIN-CROSSLINKING PROTEIN

Structural highlights

1dfc is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, TOPSAN

Function

[FSCN1_HUMAN] Organizes filamentous actin into bundles with a minimum of 4.1:1 actin/fascin ratio. Plays a role in the organization of actin filament bundles and the formation of microspikes, membrane ruffles, and stress fibers. Important for the formation of a diverse set of cell protrusions, such as filopodia, and for cell motility and migration.^[1] ^[2] ^[3] ^[4]

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 PubMed

Eukaryotes have several highly conserved actin-binding proteins that crosslink filamentous actin into compact ordered bundles present in distinct cytoskeletal processes, including microvilli, stereocilia and filopodia. Fascin is an actin-binding protein that is present predominantly in filopodia, which are believed to play a central role in normal and aberrant cell migration. An important outstanding question regards the molecular basis for the unique localization and functional properties of fascin compared with other actin crosslinking proteins. Here, we present the crystal structure of full-length Homo sapiens fascin-1, and examine its packing, conformational flexibility, and evolutionary sequence conservation. The structure reveals a novel arrangement of four tandem beta-trefoil domains that form a bi-lobed structure with approximate pseudo 2-fold symmetry. Each lobe has internal approximate pseudo 2-fold and pseudo 3-fold symmetry axes that are approximately perpendicular, with beta-hairpin triplets located symmetrically on opposite sides of each lobe that mutational data suggest are actin-binding domains. Sequence conservation analysis confirms the importance of hydrophobic core residues that stabilize the beta-trefoil fold, as well as interfacial residues that are likely to stabilize the overall fascin molecule. Sequence conservation also indicates highly conserved surface patches near the putative actin-binding domains of fascin, which conformational dynamics analysis suggests to be coupled via an allosteric mechanism that might have important functional implications for F-actin crosslinking by fascin.

Structure, evolutionary conservation, and conformational dynamics of Homo sapiens fascin-1, an F-actin crosslinking protein.,Sedeh RS, Fedorov AA, Fedorov EV, Ono S, Matsumura F, Almo SC, Bathe M J Mol Biol. 2010 Jul 16;400(3):589-604. Epub 2010 Apr 29. PMID:20434460^[5]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Adams JC. Characterization of cell-matrix adhesion requirements for the formation of fascin microspikes. Mol Biol Cell. 1997 Nov;8(11):2345-63. PMID:9362073
↑ Yamashiro S, Yamakita Y, Ono S, Matsumura F. Fascin, an actin-bundling protein, induces membrane protrusions and increases cell motility of epithelial cells. Mol Biol Cell. 1998 May;9(5):993-1006. PMID:9571235
↑ Li A, Dawson JC, Forero-Vargas M, Spence HJ, Yu X, Konig I, Anderson K, Machesky LM. The actin-bundling protein fascin stabilizes actin in invadopodia and potentiates protrusive invasion. Curr Biol. 2010 Feb 23;20(4):339-45. doi: 10.1016/j.cub.2009.12.035. Epub 2010, Feb 4. PMID:20137952 doi:10.1016/j.cub.2009.12.035
↑ Chen L, Yang S, Jakoncic J, Zhang JJ, Huang XY. Migrastatin analogues target fascin to block tumour metastasis. Nature. 2010 Apr 15;464(7291):1062-6. PMID:20393565 doi:10.1038/nature08978
↑ Sedeh RS, Fedorov AA, Fedorov EV, Ono S, Matsumura F, Almo SC, Bathe M. Structure, evolutionary conservation, and conformational dynamics of Homo sapiens fascin-1, an F-actin crosslinking protein. J Mol Biol. 2010 Jul 16;400(3):589-604. Epub 2010 Apr 29. PMID:20434460 doi:10.1016/j.jmb.2010.04.043

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1dfc"

@@ Line 2: / Line 2: @@
 <StructureSection load='1dfc' size='340' side='right' caption='[[1dfc]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1dfc]] 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=1DFC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DFC FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1dfc]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DFC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DFC FirstGlance]. <br>
-</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=1dfc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dfc OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1dfc RCSB], [http://www.ebi.ac.uk/pdbsum/1dfc PDBsum], [http://www.topsan.org/Proteins/NYSGXRC/1dfc TOPSAN]</span></td></tr>
+</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=1dfc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dfc OCA], [http://pdbe.org/1dfc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1dfc RCSB], [http://www.ebi.ac.uk/pdbsum/1dfc PDBsum], [http://www.topsan.org/Proteins/NYSGXRC/1dfc TOPSAN]</span></td></tr>
 </table>
 == Function ==
@@ Line 25: / Line 25: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1dfc" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Homo sapiens]]
+[[Category: Human]]
 [[Category: Almo, S C]]
 [[Category: Burley, S K]]

1dfc

From Proteopedia

Revision as of 09:19, 11 September 2015

CRYSTAL STRUCTURE OF HUMAN FASCIN, AN ACTIN-CROSSLINKING PROTEIN

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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