The interdomain linker region of HIV-1 capsid protein is a critical determinant of proper core assembly and stability.

The interdomain linker region of HIV-1 capsid protein is a critical determinant of proper core assembly and stability.
复制标题

DOI:
10.1016/j.virol.2011.09.012
复制
发表时间:
2011-12-20
期刊:
影响因子:
3.7
通讯作者:
Levin JG
Levin JG
中科院分区:
医学3区
文献类型:
--
作者:
Jiang J;Ablan SD;Derebail S;Hercík K;Soheilian F;Thomas JA;Tang S;Hewlett I;Nagashima K;Gorelick RJ;Freed EO;Levin JG

文献摘要

参考文献

被引文献

相似文献

HIV-1衣壳蛋白由两个独立折叠的结构域组成,由一个灵活的多肽接头(残基146-150)连接,其功能尚待确定。为了研究该区域在病毒复制中的作用,我们在每个接头残基和两个侧翼残基上进行了丙氨酸或亮氨酸替换。共鉴定出三类突变体:(I)S146A和T148A表现类似野生型(WT);(Ii)Y145A、I150A和L151A是非侵染性的,组装形态异常的不稳定核心,几乎不合成病毒DNA;(Iii)P147L和S149A表现为弱感染性表型。P147L和S149A的传染性通过水泡性口炎病毒包膜糖蛋白的伪分型而被特异性地拯救。此外,尽管有不稳定的核心,这些突变体组装类似WT的结构并合成病毒DNA,尽管效率低于WT。总体而言,这些发现表明连接区对于正确组装和稳定核心以及有效复制是必不可少的。
The HIV-1 capsid protein consists of two independently folded domains connected by a flexible peptide linker (residues 146–150), the function of which remains to be defined. To investigate the role of this region in virus replication, we made alanine or leucine substitutions in each linker residue and two flanking residues. Three classes of mutants were identified: (i) S146A and T148A behave like wild type (WT); (ii) Y145A, I150A, and L151A are noninfectious, assemble unstable cores with aberrant morphology, and synthesize almost no viral DNA; and (iii) P147L and S149A display a poorly infectious, attenuated phenotype. Infectivity of P147L and S149A is rescued specifically by pseudotyping with vesicular stomatitis virus envelope glycoprotein. Moreover, despite having unstable cores, these mutants assemble WT-like structures and synthesize viral DNA, although less efficiently than WT. Collectively, these findings demonstrate that the linker region is essential for proper assembly and stability of cores and efficient replication.
DOI: 10.1128/jvi.80.6.2884-2893.2006
发表时间: 2006-03-01
影响因子: 5.4
作者:
Auerbach, MR;Brown, KR;Singh, IR
通讯作者: Singh, IR
DOI: 10.1128/jvi.00210-10
发表时间: 2010-07-01
影响因子: 5.4
作者:
Black, Lesa R.;Aiken, Christopher
通讯作者: Aiken, Christopher
DOI: 10.1093/emboj/18.5.1124
发表时间: 1999-03-01
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
Berthet-Colominas, C;Monaco, S;Cusack, S
通讯作者: Cusack, S
DOI: 10.1093/infdis/163.1.64
发表时间: 1991-01-01
影响因子: 6.4
作者:
CHESEBRO, B;WEHRLY, K;GRIFFIN, DE
通讯作者: GRIFFIN, DE
DOI: 10.1128/jvi.75.8.3626-3635.2001
发表时间: 2001-04-01
影响因子: 5.4
作者:
Fassati, A;Goff, SP
通讯作者: Goff, SP