Inositol phosphates are assembly co-factors for HIV-1.
Inositol phosphates are assembly co-factors for HIV-1.
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DOI:
10.1038/s41586-018-0396-4
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发表时间:
2018-08
期刊:
影响因子:
64.8
通讯作者:
Vogt VM
中科院分区:
文献类型:
--
作者:
Dick RA;Zadrozny KK;Xu C;Schur FKM;Lyddon TD;Ricana CL;Wagner JM;Perilla JR;Ganser-Pornillos BK;Johnson MC;Pornillos O;Vogt VM
Information of the HIV-1 virus particle, a short, 14-amino acid segment called SP1, located in the Gag structural protein, plays a critical role. During virus assembly the SP1 peptide and seven preceding residues fold into a six-helix bundle (6HB) that holds together the Gag hexamer and facilitates formation of a curved immature hexagonal lattice underneath the viral membrane. Upon completion of assembly and budding, proteolytic cleavage of Gag leads to virus maturation, in which the immature lattice is broken down; the liberated CA domain of Gag then re-assembles into the mature conical capsid that encloses the viral genome and associated enzymes. Folding and proteolysis of the 6HB are critical rate-limiting steps of both Gag assembly and disassembly, and the 6HB is an established target of HIV-1 inhibitors. Using a combination of structural and functional analyses, we show here that inositol hexakisphosphate (IP6) facilitates formation of the 6HB and assembly of the immature HIV-1 Gag lattice. IP6 makes ionic contacts with two rings of lysine residues at the center of the Gag hexamer. Proteolytic cleavage then unmasks an alternative binding site, where IP6 interaction promotes assembly of the mature capsid lattice. These studies identify IP6 as a naturally occurring small molecule that promotes both HIV-1 assembly and maturation.
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影响因子:
5.6
作者:
Datta, Siddhartha A. K.;Zhao, Zhuojun;Rein, Alan
通讯作者:
Rein, Alan
影响因子:
5.5
作者:
Best, Robert B.;Zhu, Xiao;Shim, Jihyun;Lopes, Pedro E. M.;Mittal, Jeetain;Feig, Michael;MacKerell, Alexander D., Jr.
通讯作者:
MacKerell, Alexander D., Jr.
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
影响因子:
4.4
作者:
FELLER, SE;ZHANG, YH;BROOKS, BR
通讯作者:
BROOKS, BR
影响因子:
16
作者:
Ouyang Z;Zheng G;Tomchick DR;Luo X;Yu H
通讯作者:
Yu H