1y2o

From Proteopedia

(Difference between revisions)

Revision as of 16:23, 3 November 2021

Structure of N-terminal domain IRSp53/BAIAP2

Structural highlights

1y2o 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.
NonStd Res:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[BAIP2_HUMAN] Adapter protein that links membrane-bound small G-proteins to cytoplasmic effector proteins. Necessary for CDC42-mediated reorganization of the actin cytoskeleton and for RAC1-mediated membrane ruffling. Involved in the regulation of the actin cytoskeleton by WASF family members and the Arp2/3 complex. Plays a role in neurite growth. Acts syngeristically with ENAH to promote filipodia formation. Plays a role in the reorganization of the actin cytoskeleton in response to bacterial infection.^[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

The scaffolding protein insulin receptor tyrosine kinase substrate p53 (IRSp53), a ubiquitous regulator of the actin cytoskeleton, mediates filopodia formation under the control of Rho-family GTPases. IRSp53 comprises a central SH3 domain, which binds to proline-rich regions of a wide range of actin regulators, and a conserved N-terminal IRSp53/MIM homology domain (IMD) that harbours F-actin-bundling activity. Here, we present the crystal structure of this novel actin-bundling domain revealing a coiled-coil domain that self-associates into a 180 A-long zeppelin-shaped dimer. Sedimentation velocity experiments confirm the presence of a single molecular species of twice the molecular weight of the monomer in solution. Mutagenesis of conserved basic residues at the extreme ends of the dimer abrogated actin bundling in vitro and filopodia formation in vivo, demonstrating that IMD-mediated actin bundling is required for IRSp53-induced filopodia formation. This study promotes an expanded view of IRSp53 as an actin regulator that integrates scaffolding and effector functions.

Structural basis of filopodia formation induced by the IRSp53/MIM homology domain of human IRSp53.,Millard TH, Bompard G, Heung MY, Dafforn TR, Scott DJ, Machesky LM, Futterer K EMBO J. 2005 Jan 26;24(2):240-50. Epub 2005 Jan 6. PMID:15635447^[5]

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

References

↑ Miki H, Yamaguchi H, Suetsugu S, Takenawa T. IRSp53 is an essential intermediate between Rac and WAVE in the regulation of membrane ruffling. Nature. 2000 Dec 7;408(6813):732-5. PMID:11130076 doi:http://dx.doi.org/10.1038/35047107
↑ Krugmann S, Jordens I, Gevaert K, Driessens M, Vandekerckhove J, Hall A. Cdc42 induces filopodia by promoting the formation of an IRSp53:Mena complex. Curr Biol. 2001 Oct 30;11(21):1645-55. PMID:11696321
↑ Yamagishi A, Masuda M, Ohki T, Onishi H, Mochizuki N. A novel actin bundling/filopodium-forming domain conserved in insulin receptor tyrosine kinase substrate p53 and missing in metastasis protein. J Biol Chem. 2004 Apr 9;279(15):14929-36. Epub 2004 Jan 29. PMID:14752106 doi:http://dx.doi.org/10.1074/jbc.M309408200
↑ Vingadassalom D, Kazlauskas A, Skehan B, Cheng HC, Magoun L, Robbins D, Rosen MK, Saksela K, Leong JM. Insulin receptor tyrosine kinase substrate links the E. coli O157:H7 actin assembly effectors Tir and EspF(U) during pedestal formation. Proc Natl Acad Sci U S A. 2009 Apr 21;106(16):6754-9. doi:, 10.1073/pnas.0809131106. Epub 2009 Apr 6. PMID:19366662 doi:10.1073/pnas.0809131106
↑ Millard TH, Bompard G, Heung MY, Dafforn TR, Scott DJ, Machesky LM, Futterer K. Structural basis of filopodia formation induced by the IRSp53/MIM homology domain of human IRSp53. EMBO J. 2005 Jan 26;24(2):240-50. Epub 2005 Jan 6. PMID:15635447

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/1y2o"

@@ Line 3: / Line 3: @@
 <StructureSection load='1y2o' size='340' side='right'caption='[[1y2o]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1y2o]] 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=1Y2O OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1Y2O FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1y2o]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Y2O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1Y2O FirstGlance]. <br>
 </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='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=1y2o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1y2o OCA], [http://pdbe.org/1y2o PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1y2o RCSB], [http://www.ebi.ac.uk/pdbsum/1y2o PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1y2o ProSAT]</span></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=1y2o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1y2o OCA], [https://pdbe.org/1y2o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1y2o RCSB], [https://www.ebi.ac.uk/pdbsum/1y2o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1y2o ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/BAIP2_HUMAN BAIP2_HUMAN]] Adapter protein that links membrane-bound small G-proteins to cytoplasmic effector proteins. Necessary for CDC42-mediated reorganization of the actin cytoskeleton and for RAC1-mediated membrane ruffling. Involved in the regulation of the actin cytoskeleton by WASF family members and the Arp2/3 complex. Plays a role in neurite growth. Acts syngeristically with ENAH to promote filipodia formation. Plays a role in the reorganization of the actin cytoskeleton in response to bacterial infection.<ref>PMID:11130076</ref> <ref>PMID:11696321</ref> <ref>PMID:14752106</ref> <ref>PMID:19366662</ref>
+[[https://www.uniprot.org/uniprot/BAIP2_HUMAN BAIP2_HUMAN]] Adapter protein that links membrane-bound small G-proteins to cytoplasmic effector proteins. Necessary for CDC42-mediated reorganization of the actin cytoskeleton and for RAC1-mediated membrane ruffling. Involved in the regulation of the actin cytoskeleton by WASF family members and the Arp2/3 complex. Plays a role in neurite growth. Acts syngeristically with ENAH to promote filipodia formation. Plays a role in the reorganization of the actin cytoskeleton in response to bacterial infection.<ref>PMID:11130076</ref> <ref>PMID:11696321</ref> <ref>PMID:14752106</ref> <ref>PMID:19366662</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]

1y2o

From Proteopedia

Revision as of 16:23, 3 November 2021

Structure of N-terminal domain IRSp53/BAIAP2

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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