6TJ4

P. falciparum essential light chain, N-terminal domain

6TJ4 の概要

• エントリーDOI: 10.2210/pdb6tj4/pdb
• 分子名称: PfELC (2 entities in total)
• 機能のキーワード: motility, glideosome, myosin, essential light chain, motor protein
• 由来する生物種: Plasmodium falciparum 3D7
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 18042.41

構造登録者

Pazicky, S.,Loew, C. (登録日: 2019-11-25, 公開日: 2020-10-21, 最終更新日: 2024-11-13)

主引用文献

Pazicky, S.,Dhamotharan, K.,Kaszuba, K.,Mertens, H.D.T.,Gilberger, T.,Svergun, D.,Kosinski, J.,Weininger, U.,Low, C.
Structural role of essential light chains in the apicomplexan glideosome.
Commun Biol, 3:568-568, 2020

PubMed Abstract: 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.

PubMed: 33051581
DOI: 10.1038/s42003-020-01283-8

実験手法

X-RAY DIFFRACTION (1.5 Å)