Structure of the essential Plasmodium host cell traversal protein SPECT1.
Structure of the essential Plasmodium host cell traversal protein SPECT1.
复制标题
必需疟原虫宿主细胞遍历蛋白Spect1的结构。
DOI:
10.1371/journal.pone.0114685
复制
发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Ghosh P
中科院分区:
文献类型:
--
作者:
Hamaoka BY;Ghosh P
Host cell traversal by Plasmodium, the protozoan cause of malaria, is an essential part of this parasite's virulence. In this process, the parasite enters a host cell through a parasite-induced pore, traverses the host cell, and then exits the host cell. Two P. berghei proteins, SPECT1 and SPECT2, are required for host cell traversal by the sporozoite form of the parasite. In the absence of either, no pore formation is observed. While SPECT2 has sequence homology to pore-forming proteins, SPECT1 has no homology to proteins of known structure or function. Here we present the 2.75 Å resolution structure of a slightly truncated version of P. berghei SPECT1. The structure reveals that the protein forms a four-helix bundle, with the rare feature of having all of these helices in parallel or antiparallel alignment. Also notable is the presence of a large, conserved, hydrophobic internal cavity in the protein, which may constitute a ligand-binding site or be indicative of partial instability in SPECT1, or both. The structure of SPECT1 will make possible targeted mutagenesis experiments aimed at understanding its mechanism of action in host cell traversal.
登录
查看更多内容
影响因子:
56.9
作者:
Hadders, Michael A.;Beringer, Dennis X.;Gros, Piet
通讯作者:
Gros, Piet
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
DOI:
10.1038/nsb0194-30
发表时间:
1994-01-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
FENG, YQ;SLIGAR, SG;WAND, AJ
通讯作者:
WAND, AJ
影响因子:
14.9
作者:
Landau M;Mayrose I;Rosenberg Y;Glaser F;Martz E;Pupko T;Ben-Tal N
通讯作者:
Ben-Tal N
影响因子:
14.8
作者:
Kelley, Lawrence A.;Sternberg, Michael J. E.
通讯作者:
Sternberg, Michael J. E.