6tj5: Difference between revisions
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==T. gondii myosin A trimeric complex with ELC1== | |||
<StructureSection load='6tj5' size='340' side='right'caption='[[6tj5]], [[Resolution|resolution]] 2.39Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[6tj5]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Toxoplasma_gondii Toxoplasma gondii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TJ5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6TJ5 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]] 2.394Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</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=6tj5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tj5 OCA], [https://pdbe.org/6tj5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6tj5 RCSB], [https://www.ebi.ac.uk/pdbsum/6tj5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6tj5 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/A0A0F7UZ05_TOXGV A0A0F7UZ05_TOXGV] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Gliding, a type of motility based on an actin-myosin motor, is specific to apicomplexan parasites. Myosin A binds two light chains which further interact with glideosome associated proteins and assemble into the glideosome. The role of individual glideosome proteins is unclear due to the lack of structures of larger glideosome assemblies. Here, we investigate the role of essential light chains (ELCs) in Toxoplasma gondii and Plasmodium falciparum and present their crystal structures as part of trimeric sub-complexes. We show that although ELCs bind a conserved MyoA sequence, P. falciparum ELC adopts a distinct structure in the free and MyoA-bound state. We suggest that ELCs enhance MyoA performance by inducing secondary structure in MyoA and thus stiffen its lever arm. Structural and biophysical analysis reveals that calcium binding has no influence on the structure of ELCs. Our work represents a further step towards understanding the mechanism of gliding in Apicomplexa. | |||
Structural role of essential light chains in the apicomplexan glideosome.,Pazicky S, Dhamotharan K, Kaszuba K, Mertens HDT, Gilberger T, Svergun D, Kosinski J, Weininger U, Low C Commun Biol. 2020 Oct 13;3(1):568. doi: 10.1038/s42003-020-01283-8. PMID:33051581<ref>PMID:33051581</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 6tj5" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Myosin 3D Structures|Myosin 3D Structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Toxoplasma gondii]] | |||
[[Category: Loew C]] | |||
[[Category: Pazicky S]] | |||
Latest revision as of 16:03, 24 January 2024
T. gondii myosin A trimeric complex with ELC1T. gondii myosin A trimeric complex with ELC1
Structural highlights
FunctionPublication Abstract from PubMedGliding, a type of motility based on an actin-myosin motor, is specific to apicomplexan parasites. Myosin A binds two light chains which further interact with glideosome associated proteins and assemble into the glideosome. The role of individual glideosome proteins is unclear due to the lack of structures of larger glideosome assemblies. Here, we investigate the role of essential light chains (ELCs) in Toxoplasma gondii and Plasmodium falciparum and present their crystal structures as part of trimeric sub-complexes. We show that although ELCs bind a conserved MyoA sequence, P. falciparum ELC adopts a distinct structure in the free and MyoA-bound state. We suggest that ELCs enhance MyoA performance by inducing secondary structure in MyoA and thus stiffen its lever arm. Structural and biophysical analysis reveals that calcium binding has no influence on the structure of ELCs. Our work represents a further step towards understanding the mechanism of gliding in Apicomplexa. Structural role of essential light chains in the apicomplexan glideosome.,Pazicky S, Dhamotharan K, Kaszuba K, Mertens HDT, Gilberger T, Svergun D, Kosinski J, Weininger U, Low C Commun Biol. 2020 Oct 13;3(1):568. doi: 10.1038/s42003-020-01283-8. PMID:33051581[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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