The crystal structure of HIV CRF07 B'/C gp41 reveals a hyper-mutant site in the middle of HR2 heptad repeat.

Abstract:

:HIV CRF07 B'/C is a strain circulating mainly in northwest region of China. The gp41 region of CRF07 is derived from a clade C virus. In order to compare the difference of CRF07 gp41 with that of typical clade B virus, we solved the crystal structure of the core region of CRF07 gp41. Compared with clade B gp41, CRF07 gp41 evolved more basic and hydrophilic residues on its helix bundle surface. Based on sequence alignment, a hyper-mutant cluster located in the middle of HR2 heptads repeat was identified. The mutational study of these residues revealed that this site is important in HIV mediated cell-cell fusion and plays critical roles in conformational changes during viral invasion.

journal_name

Virology

journal_title

Virology

authors

Du J,Xue H,Ma J,Liu F,Zhou J,Shao Y,Qiao W,Liu X

doi

10.1016/j.virol.2013.07.024

subject

Has Abstract

pub_date

2013-11-01 00:00:00

pages

86-94

issue

1-2

eissn

0042-6822

issn

1096-0341

pii

S0042-6822(13)00444-3

journal_volume

446

pub_type

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