Mechanochemical tuning of a kinesin motor essential for malaria parasite transmission
Mechanochemical tuning of a kinesin motor essential for malaria parasite transmission
复制标题
疟疾寄生虫传播所必需的驱动蛋白马达的机械化学调节
DOI:
10.1101/2022.02.11.480087
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Liu T
中科院分区:
文献类型:
--
作者:
Liu T
Plasmodiumspecies cause malaria and kill hundreds of thousands annually. The microtubule-based motor kinesin-8B is required for development of the flagellatedPlasmodiummale gamete, and its absence completely blocks parasite transmission. To understand the molecular basis of kinesin-8B’s essential role, we characterised the in vitro properties of kinesin-8B motor domains fromP. bergheiandP. falciparum. Both motors drive ATP-dependent microtubule gliding, but also catalyse ATP-dependent microtubule depolymerisation. We determined these motors’ microtubule-bound structures using cryo-electron microscopy, which showed very similar modes of microtubule interaction in whichPlasmodium-distinct sequences at the microtubule-kinesin interface influence motor function. Intriguingly however,P. bergheikinesin-8B exhibits a non-canonical structural response to ATP analogue binding such that neck linker docking is not induced. Nevertheless, the neck linker region is required for motility and depolymerisation activities of these motors. These data suggest that the mechanochemistry ofPlasmodiumkinesin-8Bs is functionally tuned to support flagella formation.
登录
查看更多内容
影响因子:
5.5
作者:
Persico,Veronica;Callaini,Giuliano;Riparbelli,Maria Giovanna
通讯作者:
Riparbelli,Maria Giovanna
影响因子:
3
作者:
Tang, Guang;Peng, Liwei;Ludtke, Steven J.
通讯作者:
Ludtke, Steven J.
影响因子:
5.6
作者:
Arora, Kritica;Talje, Lama;Kwok, Benjamin H.
通讯作者:
Kwok, Benjamin H.
DOI:
10.1097/iae.0000000000001602
发表时间:
2017
期刊:
Retina (Philadelphia, Pa.)
影响因子:
--
作者:
Todorich,Bozho;Thanos,Aristomenis;Yonekawa,Yoshihiro;Thomas,BenjaminJ;Faia,LisaJ;Chang,Emmanuel;Shulman,Julia;Olsen,KarlR;Blair,MichaelP;Shapiro,MichaelP;Ferrone,Philip;Vajzovic,Lejla;Toth,CynthiaA;Lee,ThomasC;Robinson,
通讯作者:
Robinson,
影响因子:
3
作者:
Mastronarde, DN
通讯作者:
Mastronarde, DN