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<StructureSection load='7q8b' size='340' side='right'caption='[[7q8b]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
<StructureSection load='7q8b' size='340' side='right'caption='[[7q8b]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[7q8b]] is a 5 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7Q8B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7Q8B FirstGlance]. <br>
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7Q8B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7Q8B FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.3&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</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=7q8b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7q8b OCA], [https://pdbe.org/7q8b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7q8b RCSB], [https://www.ebi.ac.uk/pdbsum/7q8b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7q8b 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=7q8b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7q8b OCA], [https://pdbe.org/7q8b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7q8b RCSB], [https://www.ebi.ac.uk/pdbsum/7q8b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7q8b ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Actin polymerization generates forces for cellular processes throughout the eukaryotic kingdom, but our understanding of the 'ancient' actin turnover machineries is limited. We show that, despite &gt; 1 billion years of evolution, pathogenic Leishmania major parasite and mammalian actins share the same overall fold and co-polymerize with each other. Interestingly, Leishmania harbors a simple actin-regulatory machinery that lacks cofilin 'cofactors', which accelerate filament disassembly in higher eukaryotes. By applying single-filament biochemistry we discovered that, compared to mammalian proteins, Leishmania actin filaments depolymerize more rapidly from both ends, and are severed &gt; 100-fold more efficiently by cofilin. Our high-resolution cryo-EM structures of Leishmania ADP-, ADP-Pi- and cofilin-actin filaments identify specific features at actin subunit interfaces and cofilin-actin interactions that explain the unusually rapid dynamics of parasite actin filaments. Our findings reveal how divergent parasites achieve rapid actin dynamics using a remarkably simple set of actin-binding proteins, and elucidate evolution of the actin cytoskeleton.


Structural basis of rapid actin dynamics in the evolutionarily divergent Leishmania parasite.,Kotila T, Wioland H, Selvaraj M, Kogan K, Antenucci L, Jegou A, Huiskonen JT, Romet-Lemonne G, Lappalainen P Nat Commun. 2022 Jun 15;13(1):3442. doi: 10.1038/s41467-022-31068-y. PMID:35705539<ref>PMID:35705539</ref>
==See Also==
 
*[[Actin 3D structures|Actin 3D structures]]
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7q8b" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Huiskonen, J T]]
[[Category: Huiskonen JT]]
[[Category: Kotila, T]]
[[Category: Kotila T]]
[[Category: Lappalainen, P]]
[[Category: Lappalainen P]]
[[Category: Muniyandi, S]]
[[Category: Muniyandi S]]
[[Category: Actin]]
[[Category: Adp-pi]]
[[Category: Filament]]
[[Category: Parasite]]
[[Category: Structural protein]]

Latest revision as of 06:33, 1 October 2025

Leishmania major actin filament in ADP-Pi state

7q8b, resolution 3.30Å

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