6TU7 image
Entry Detail
PDB ID:
6TU7
EMDB ID:
Keywords:
Title:
Structure of PfMyoA decorated Plasmodium Act1 filament
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2020-01-03
Release Date:
2021-01-13
Method Details:
Experimental Method:
Resolution:
3.10 Å
Aggregation State:
FILAMENT
Reconstruction Method:
HELICAL
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Myosin-A
Chain IDs:A (auth: AP1), F (auth: GP1)
Chain Length:820
Number of Molecules:2
Biological Source:Plasmodium falciparum 3D7
Polymer Type:polypeptide(L)
Description:Actin-1
Chain IDs:B (auth: BP1), C (auth: CP1), D (auth: DP1), E (auth: EP1)
Chain Length:378
Number of Molecules:4
Biological Source:Plasmodium falciparum 3D7
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
SEP A SER modified residue
Primary Citation
High-resolution structures of malaria parasite actomyosin and actin filaments.
Plos Pathog. 18 e1010408 e1010408 (2022)
PMID: 35377914 DOI: 10.1371/journal.ppat.1010408

Abstact

Malaria is responsible for half a million deaths annually and poses a huge economic burden on the developing world. The mosquito-borne parasites (Plasmodium spp.) that cause the disease depend upon an unconventional actomyosin motor for both gliding motility and host cell invasion. The motor system, often referred to as the glideosome complex, remains to be understood in molecular terms and is an attractive target for new drugs that might block the infection pathway. Here, we present the high-resolution structure of the actomyosin motor complex from Plasmodium falciparum. The complex includes the malaria parasite actin filament (PfAct1) complexed with the class XIV myosin motor (PfMyoA) and its two associated light-chains. The high-resolution core structure reveals the PfAct1:PfMyoA interface in atomic detail, while at lower-resolution, we visualize the PfMyoA light-chain binding region, including the essential light chain (PfELC) and the myosin tail interacting protein (PfMTIP). Finally, we report a bare PfAct1 filament structure at improved resolution.

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Primary Citation of related structures