National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
AI167756
米国
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
AI150464
米国
引用
ジャーナル: Nat Struct Mol Biol / 年: 2023 タイトル: A molecular switch modulates assembly and host factor binding of the HIV-1 capsid. 著者: Randall T Schirra / Nayara F B Dos Santos / Kaneil K Zadrozny / Iga Kucharska / Barbie K Ganser-Pornillos / Owen Pornillos / 要旨: The HIV-1 capsid is a fullerene cone made of quasi-equivalent hexamers and pentamers of the viral CA protein. Typically, quasi-equivalent assembly of viral capsid subunits is controlled by a ...The HIV-1 capsid is a fullerene cone made of quasi-equivalent hexamers and pentamers of the viral CA protein. Typically, quasi-equivalent assembly of viral capsid subunits is controlled by a molecular switch. Here, we identify a Thr-Val-Gly-Gly motif that modulates CA hexamer/pentamer switching by folding into a 3 helix in the pentamer and random coil in the hexamer. Manipulating the coil/helix configuration of the motif allowed us to control pentamer and hexamer formation in a predictable manner, thus proving its function as a molecular switch. Importantly, the switch also remodels the common binding site for host factors that are critical for viral replication and the new ultra-potent HIV-1 inhibitor lenacapavir. This study reveals that a critical assembly element also modulates the post-assembly and viral replication functions of the HIV-1 capsid and provides new insights on capsid function and inhibition.
全体 : Capsid-like particles of in vitro assembled HIV-1 CA protein in c...
全体
名称: Capsid-like particles of in vitro assembled HIV-1 CA protein in complex with CPSF6-FG peptide
要素
複合体: Capsid-like particles of in vitro assembled HIV-1 CA protein in complex with CPSF6-FG peptide
タンパク質・ペプチド: HIV-1 capsid protein
タンパク質・ペプチド: Cleavage and polyadenylation specificity factor subunit 6
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超分子 #1: Capsid-like particles of in vitro assembled HIV-1 CA protein in c...
超分子
名称: Capsid-like particles of in vitro assembled HIV-1 CA protein in complex with CPSF6-FG peptide タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all 詳細: Capsids (0.27 mM CA) were incubated with peptide (3 mM) for 1 hour in ice