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-Structure paper
タイトル | Prion-like low complexity regions enable avid virus-host interactions during HIV-1 infection. |
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ジャーナル・号・ページ | Nat Commun, Vol. 13, Issue 1, Page 5879, Year 2022 |
掲載日 | 2022年10月6日 |
著者 | Guochao Wei / Naseer Iqbal / Valentine V Courouble / Ashwanth C Francis / Parmit K Singh / Arpa Hudait / Arun S Annamalai / Stephanie Bester / Szu-Wei Huang / Nikoloz Shkriabai / Lorenzo Briganti / Reed Haney / Vineet N KewalRamani / Gregory A Voth / Alan N Engelman / Gregory B Melikyan / Patrick R Griffin / Francisco Asturias / Mamuka Kvaratskhelia / |
PubMed 要旨 | Cellular proteins CPSF6, NUP153 and SEC24C play crucial roles in HIV-1 infection. While weak interactions of short phenylalanine-glycine (FG) containing peptides with isolated capsid hexamers have ...Cellular proteins CPSF6, NUP153 and SEC24C play crucial roles in HIV-1 infection. While weak interactions of short phenylalanine-glycine (FG) containing peptides with isolated capsid hexamers have been characterized, how these cellular factors functionally engage with biologically relevant mature HIV-1 capsid lattices is unknown. Here we show that prion-like low complexity regions (LCRs) enable avid CPSF6, NUP153 and SEC24C binding to capsid lattices. Structural studies revealed that multivalent CPSF6 assembly is mediated by LCR-LCR interactions, which are templated by binding of CPSF6 FG peptides to a subset of hydrophobic capsid pockets positioned along adjoining hexamers. In infected cells, avid CPSF6 LCR-mediated binding to HIV-1 cores is essential for functional virus-host interactions. The investigational drug lenacapavir accesses unoccupied hydrophobic pockets in the complex to potently impair HIV-1 inside the nucleus without displacing the tightly bound cellular cofactor from virus cores. These results establish previously undescribed mechanisms of virus-host interactions and antiviral action. |
リンク | Nat Commun / PubMed:36202818 / PubMed Central |
手法 | EM (らせん対称) / X線回折 |
解像度 | 2.81 - 7.85 Å |
構造データ | EMDB-27617: Helical reconstruction of A92E HIV capsid in complex with CPSF6 construct (filtered by local resolution) EMDB-27619: Helical reconstruction of A92E HIV capsid in complex with CPSF6 construct (filtered by local resolution) EMDB-27625: Helical reconstruction of A92E HIV capsid in presence of FG mutant CPSF6 construct (filtered by local resolution) PDB-7snq: |
化合物 | ChemComp-IHP: ChemComp-CL: ChemComp-HOH: |
由来 |
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キーワード | VIRAL PROTEIN |