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Basic Characteristics of Mutations
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Mutation Site
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H655Y |
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Mutation Site Sentence
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None of the mutations (H655Y, N679K, and P681H) located near the S1/S2 cleavage site had significant effects on S processing (Figure 3). |
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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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S |
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Standardized Encoding Gene
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S
|
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Genotype/Subtype
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- |
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Viral Reference
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YP_009724390.1
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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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Clinical and Epidemiological Correlations
|
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Clinical Information
|
- |
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Treatment
|
- |
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Location
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China |
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Literature Information
|
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PMID
|
35931073
|
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Title
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Determinants of Spike infectivity, processing, and neutralization in SARS-CoV-2 Omicron subvariants BA.1 and BA.2
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Author
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Pastorio C,Zech F,Noettger S,Jung C,Jacob T,Sanderson T,Sparrer KMJ,Kirchhoff F
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Journal
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Cell host & microbe
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Journal Info
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2022 Sep 14;30(9):1255-1268
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Abstract
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SARS-CoV-2 Omicron rapidly outcompeted other variants and currently dominates the COVID-19 pandemic. Its enhanced transmission and immune evasion are thought to be driven by numerous mutations in the Omicron Spike protein. Here, we systematically introduced BA.1 and/or BA.2 Omicron Spike mutations into the ancestral Spike protein and examined the impacts on Spike function, processing, and susceptibility to neutralization. Individual mutations of S371F/L, S375F, and T376A in the ACE2-receptor-binding domain as well as Q954H and N969K in the hinge region 1 impaired infectivity, while changes to G339D, D614G, N764K, and L981F moderately enhanced it. Most mutations in the N-terminal region and receptor-binding domain reduced the sensitivity of the Spike protein to neutralization by sera from individuals vaccinated with the BNT162b2 vaccine and by therapeutic antibodies. Our results represent a systematic functional analysis of Omicron Spike adaptations that have allowed this SARS-CoV-2 variant to dominate the current pandemic.
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Sequence Data
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-
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