1t44: Difference between revisions

From Proteopedia
Jump to navigationJump to search
← Older edit
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,331,613 edits
No edit summary
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,331,613 edits
No edit summary
 
(12 intermediate revisions by the same user not shown)
Line 1: Line 1:
[[Image:1t44.gif|left|200px]]
<!--
The line below this paragraph, containing "STRUCTURE_1t44", creates the "Structure Box" on the page.
You may change the PDB parameter (which sets the PDB file loaded into the applet)
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
or leave the SCENE parameter empty for the default display.
-->
{{STRUCTURE_1t44|  PDB=1t44  |  SCENE=  }}
'''Structural basis of actin sequestration by thymosin-B4: Implications for arp2/3 activation'''


==Structural basis of actin sequestration by thymosin-B4: Implications for arp2/3 activation==
<StructureSection load='1t44' size='340' side='right'caption='[[1t44]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1t44]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens], [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus] and [https://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T44 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1T44 FirstGlance]. <br>
</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&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</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=1t44 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1t44 OCA], [https://pdbe.org/1t44 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1t44 RCSB], [https://www.ebi.ac.uk/pdbsum/1t44 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1t44 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ACTS_RABIT ACTS_RABIT] Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/t4/1t44_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1t44 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The WH2 (Wiscott-Aldridge syndrome protein homology domain 2) repeat is an actin interacting motif found in monomer sequestering and filament assembly proteins. We have stabilized the prototypical WH2 family member, thymosin-beta4 (Tbeta4), with respect to actin, by creating a hybrid between gelsolin domain 1 and the C-terminal half of Tbeta4 (G1-Tbeta4). This hybrid protein sequesters actin monomers, severs actin filaments and acts as a leaky barbed end cap. Here, we present the structure of the G1-Tbeta4:actin complex at 2 A resolution. The structure reveals that Tbeta4 sequesters by capping both ends of the actin monomer, and that exchange of actin between Tbeta4 and profilin is mediated by a minor overlap in binding sites. The structure implies that multiple WH2 motif-containing proteins will associate longitudinally with actin filaments. Finally, we discuss the role of the WH2 motif in arp2/3 activation.


==Overview==
Structural basis of actin sequestration by thymosin-beta4: implications for WH2 proteins.,Irobi E, Aguda AH, Larsson M, Guerin C, Yin HL, Burtnick LD, Blanchoin L, Robinson RC EMBO J. 2004 Sep 15;23(18):3599-608. Epub 2004 Aug 26. PMID:15329672<ref>PMID:15329672</ref>
The WH2 (Wiscott-Aldridge syndrome protein homology domain 2) repeat is an actin interacting motif found in monomer sequestering and filament assembly proteins. We have stabilized the prototypical WH2 family member, thymosin-beta4 (Tbeta4), with respect to actin, by creating a hybrid between gelsolin domain 1 and the C-terminal half of Tbeta4 (G1-Tbeta4). This hybrid protein sequesters actin monomers, severs actin filaments and acts as a leaky barbed end cap. Here, we present the structure of the G1-Tbeta4:actin complex at 2 A resolution. The structure reveals that Tbeta4 sequesters by capping both ends of the actin monomer, and that exchange of actin between Tbeta4 and profilin is mediated by a minor overlap in binding sites. The structure implies that multiple WH2 motif-containing proteins will associate longitudinally with actin filaments. Finally, we discuss the role of the WH2 motif in arp2/3 activation.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
1T44 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens,_mus_musculus Homo sapiens, mus musculus] and [http://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T44 OCA].
</div>
<div class="pdbe-citations 1t44" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Structural basis of actin sequestration by thymosin-beta4: implications for WH2 proteins., Irobi E, Aguda AH, Larsson M, Guerin C, Yin HL, Burtnick LD, Blanchoin L, Robinson RC, EMBO J. 2004 Sep 15;23(18):3599-608. Epub 2004 Aug 26. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15329672 15329672]
*[[Actin 3D structures|Actin 3D structures]]
[[Category: Homo sapiens, mus musculus]]
*[[Gelsolin 3D structures|Gelsolin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Oryctolagus cuniculus]]
[[Category: Oryctolagus cuniculus]]
[[Category: Protein complex]]
[[Category: Aguda AH]]
[[Category: Aguda, A H.]]
[[Category: Burtnick LD]]
[[Category: Burtnick, L D.]]
[[Category: Irobi E]]
[[Category: Irobi, E.]]
[[Category: Larsson M]]
[[Category: Larsson, M.]]
[[Category: Robinson RC]]
[[Category: Robinson, R C.]]
[[Category: Structural protein]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 09:29:54 2008''

Latest revision as of 06:25, 23 August 2023

Structural basis of actin sequestration by thymosin-B4: Implications for arp2/3 activation

1t44, resolution 2.00Å

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "https://proteopedia.org/index.php?title=1t44&oldid=3839564"