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Basic Characteristics of Mutations
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Mutation Site
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L60G |
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Mutation Site Sentence
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In contrast, P5W and L60W mutant Cps, as well as P5G and L60G, all generated viral DNA-containing capsids but no distinguishable virion signals, as shown in Fig. 6 for the gradient fractions 8 to 10 from the transition region between virions and naked capsids. |
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Mutation Level
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Amino acid level |
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Mutation Type
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Nonsynonymous substitution |
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Gene/Protein/Region
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C |
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Standardized Encoding Gene
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C
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Genotype/Subtype
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- |
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Viral Reference
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-
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Functional Impact and Mechanisms
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Disease
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-
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Immune
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- |
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Target Gene
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-
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Clinical and Epidemiological Correlations
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Clinical Information
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- |
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Treatment
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- |
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Location
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- |
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Literature Information
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PMID
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33879615
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Title
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A pocket-factor-triggered conformational switch in the hepatitis B virus capsid
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Author
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Lecoq L,Wang S,Dujardin M,Zimmermann P,Schuster L,Fogeron ML,Briday M,Schledorn M,Wiegand T,Cole L,Montserret R,Bressanelli S,Meier BH,Nassal M,Bockmann A
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Journal
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Proceedings of the National Academy of Sciences of the United States of America
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Journal Info
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2021 Apr 27;118(17):e2022464118
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Abstract
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Viral hepatitis is growing into an epidemic illness, and it is urgent to neutralize the main culprit, hepatitis B virus (HBV), a small-enveloped retrotranscribing DNA virus. An intriguing observation in HB virion morphogenesis is that capsids with immature genomes are rarely enveloped and secreted. This prompted, in 1982, the postulate that a regulated conformation switch in the capsid triggers envelopment. Using solid-state NMR, we identified a stable alternative conformation of the capsid. The structural variations focus on the hydrophobic pocket of the core protein, a hot spot in capsid-envelope interactions. This structural switch is triggered by specific, high-affinity binding of a pocket factor. The conformational change induced by the binding is reminiscent of a maturation signal. This leads us to formulate the ""synergistic double interaction"" hypothesis, which explains the regulation of capsid envelopment and indicates a concept for therapeutic interference with HBV envelopment.
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Sequence Data
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-
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