A Plasmodium falciparum PHIST protein binds the virulence factor PfEMP1 and comigrates to knobs on the host cell surface.

A Plasmodium falciparum PHIST protein binds the virulence factor PfEMP1 and comigrates to knobs on the host cell surface.
复制标题

DOI:
10.1096/fj.14-256057
复制
发表时间:
2014-10
期刊:
FASEB journal : official publication of the Federation of American Societies for Experimental Biology
影响因子:
--
通讯作者:
Vakonakis I
Vakonakis I
中科院分区:
其他
文献类型:
--
作者:
Oberli A;Slater LM;Cutts E;Brand F;Mundwiler-Pachlatko E;Rusch S;Masik MF;Erat MC;Beck HP;Vakonakis I

文献摘要

参考文献

被引文献

相似文献

恶性疟原虫感染的红细胞(IRBC)在疟疾寄生虫中是独一无二的,它会产生膜突起,称为纽结,在那里寄生虫黏附受体恶性疟原虫红细胞膜蛋白1(PfEMP1)聚集。结节的形成和相关的红细胞与宿主内皮细胞的黏附直接与疟疾的严重程度有关,是寄生虫向红细胞输出蛋白质的功能性表现。一个带有疟原虫螺旋散布亚端粒(PHIST)结构域的出口蛋白家族已经引起了人们的注意,其中的成员参与宿主-寄生虫蛋白的相互作用,并在严重疾病和寄生虫分离株之间存在差异调节。在这里,我们发现PHIST成员PfE1605w直接与PfEMP1胞内片段结合,Kd=5±0.6μM,在输出过程中与PfEMP1迁移,并定位在节中。不位于旋钮(MAL8P1.4)或与PfEMP1结合30倍弱(PFI1780w)的PHIST变体作为对照没有显示出相同的模式。我们解析了PHIST蛋白的第一个晶体结构,并从核磁共振中推导出PHIST-PfEMP1相互作用的部分模型。我们认为,PFE1605w增强了PfEMP1-细胞骨架的连接,并讨论了PHIST蛋白在寄生虫出口组中作为相互作用中心的可能作用。-Oberli,A.,Slate,L.M.,Cutts,E.,Brand,F.,Mundwiler-Pachlatko,E.,Rusch,S.,Masik,M.F.G.,ERAT,M.C.,Beck,H.P.,Vakonakis,I.恶性疟原虫PHIST蛋白结合毒力因子PfEMP1并迁移到宿主细胞表面的节上。
Uniquely among malaria parasites, Plasmodium falciparum-infected erythrocytes (iRBCs) develop membrane protrusions, known as knobs, where the parasite adhesion receptor P. falciparum erythrocyte membrane protein 1 (PfEMP1) clusters. Knob formation and the associated iRBC adherence to host endothelium are directly linked to the severity of malaria and are functional manifestations of protein export from the parasite to the iRBC. A family of exported proteins featuring Plasmodium helical interspersed subtelomeric (PHIST) domains has attracted attention, with members being implicated in host-parasite protein interactions and differentially regulated in severe disease and among parasite isolates. Here, we show that PHIST member PFE1605w binds the PfEMP1 intracellular segment directly with Kd = 5 ± 0.6 μM, comigrates with PfEMP1 during export, and locates in knobs. PHIST variants that do not locate in knobs (MAL8P1.4) or bind PfEMP1 30 times more weakly (PFI1780w) used as controls did not display the same pattern. We resolved the first crystallographic structure of a PHIST protein and derived a partial model of the PHIST-PfEMP1 interaction from nuclear magnetic resonance. We propose that PFE1605w reinforces the PfEMP1-cytoskeletal connection in knobs and discuss the possible role of PHIST proteins as interaction hubs in the parasite exportome.—Oberli, A., Slater, L. M., Cutts, E., Brand, F., Mundwiler-Pachlatko, E., Rusch, S., Masik, M. F. G., Erat, M. C., Beck, H.-P., Vakonakis, I. A Plasmodium falciparum PHIST protein binds the virulence factor PfEMP1 and comigrates to knobs on the host cell surface.
DOI: 10.1107/s0907444905036693
发表时间: 2006-01-01
影响因子: 2.2
作者:
Evans, P
通讯作者: Evans, P
新PNEP的识别表明,在恶性疟原虫蛋白蛋白质出口中,非二氧醇的大量导出和基础。
DOI: 10.1371/journal.ppat.1003546
发表时间: 2013
期刊: PLoS pathogens
影响因子: 6.7
作者:
Heiber A;Kruse F;Pick C;Grüring C;Flemming S;Oberli A;Schoeler H;Retzlaff S;Mesén-Ramírez P;Hiss JA;Kadekoppala M;Hecht L;Holder AA;Gilberger TW;Spielmann T
通讯作者: Spielmann T
DOI: 10.1371/journal.pbio.0000005
发表时间: 2003-10
期刊: PLOS BIOLOGY
影响因子: 9.8
作者:
Bozdech, Zbynek;Llinas, Manuel;Pulliam, Brian Lee;Wong, Edith D;Zhu, Jingchun;DeRisi, Joseph L
通讯作者: DeRisi, Joseph L
DOI: 10.1038/nature08104
发表时间: 2009-06-18
期刊: NATURE
影响因子: 64.8
作者:
de Koning-Ward, Tania F.;Gilson, Paul R.;Boddey, Justin A.;Rug, Melanie;Smith, Brian J.;Papenfuss, Anthony T.;Sanders, Paul R.;Lundie, Rachel J.;Maier, Alexander G.;Cowman, Alan F.;Crabb, Brendan S.
通讯作者: Crabb, Brendan S.
DOI: 10.1016/0092-8674(95)90054-3
发表时间: 1995-07-14
期刊: CELL
影响因子: 64.5
作者:
BARUCH, DI;PASLOSKE, BL;HOWARD, RJ
通讯作者: HOWARD, RJ