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A large HIV gp41 construct with trimer-of-hairpins structure exhibits V2E mutation-dominant attenuation of vesicle fusion and helicity very similar to V2E attenuation of HIV fusion and infection and supports: (1) hairpin stabilization of membrane apposition with larger distance for V2E; and (2) V2E dominance by an antiparallel β sheet with interleaved fusion peptide strands from two gp41 trimers.
Rokonujjaman M, Sahyouni A, Wolfe R, Jia L, Ghosh U, Weliky DP. Rokonujjaman M, et al. Biophys Chem. 2023 Feb;293:106933. doi: 10.1016/j.bpc.2022.106933. Epub 2022 Nov 24. Biophys Chem. 2023. PMID: 36508984 Free PMC article.
2H nuclear magnetic resonance spectroscopy supports larger amplitude fast motion and interference with lipid chain ordering for membrane that contains β sheet human immunodeficiency virus gp41 fusion peptide or helical hairpin influenza virus hemagglutinin fusion peptide at fusogenic pH.
Ghosh U, Weliky DP. Ghosh U, et al. Biochim Biophys Acta Biomembr. 2020 Oct 1;1862(10):183404. doi: 10.1016/j.bbamem.2020.183404. Epub 2020 Jun 23. Biochim Biophys Acta Biomembr. 2020. PMID: 32585207 Free PMC article.
Hydrogen-Deuterium Exchange Supports Independent Membrane-Interfacial Fusion Peptide and Transmembrane Domains in Subunit 2 of Influenza Virus Hemagglutinin Protein, a Structured and Aqueous-Protected Connection between the Fusion Peptide and Soluble Ectodomain, and the Importance of Membrane Apposition by the Trimer-of-Hairpins Structure.
Ranaweera A, Ratnayake PU, Ekanayaka EAP, Declercq R, Weliky DP. Ranaweera A, et al. Biochemistry. 2019 May 14;58(19):2432-2446. doi: 10.1021/acs.biochem.8b01272. Epub 2019 May 1. Biochemistry. 2019. PMID: 31008587 Free PMC article.
Full-length trimeric influenza virus hemagglutinin II membrane fusion protein and shorter constructs lacking the fusion peptide or transmembrane domain: Hyperthermostability of the full-length protein and the soluble ectodomain and fusion peptide make significant contributions to fusion of membrane vesicles.
Ratnayake PU, Prabodha Ekanayaka EA, Komanduru SS, Weliky DP. Ratnayake PU, et al. Protein Expr Purif. 2016 Jan;117:6-16. doi: 10.1016/j.pep.2015.08.021. Epub 2015 Aug 19. Protein Expr Purif. 2016. PMID: 26297995 Free PMC article.
49 results