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• W2095682806 abstract "Influenza B virus hemagglutinin (BHA) contains a predicted cytoplasmic tail of 10 amino acids that are highly conserved among influenza B viruses. To understand the role of this cytoplasmic tail in infectious virus production, we used reverse genetics to generate a recombinant influenza B virus lacking the BHA cytoplasmic tail domain. The resulting virus, designated BHATail−, had a titer approximately 5 log units lower than that of wild-type virus but grew normally when BHA was supplemented in trans by BHA-expressing cells. Although the levels of BHA cell surface expression were indistinguishable between truncated and wild-type BHA, the BHATail− virus produced particles containing dramatically less BHA. Moreover, removal of the cytoplasmic tail abrogated the association of BHA with Triton X-100-insoluble lipid rafts. Interestingly, long-term culture of a virus lacking the BHA cytoplasmic tail in Madin-Darby canine kidney (MDCK) cells yielded a mutant with infectivities somewhat similar to that of wild-type virus. Sequencing revealed that the mutant virus retained the original cytoplasmic tail deletion but acquired additional mutations in its BHA, neuraminidase (NA), and M1 proteins. Viral growth kinetic analysis showed that replication of BHA cytoplasmic tailless viruses could be improved by compensatory mutations in the NA and M1 proteins. These findings indicate that the cytoplasmic tail domain of BHA is important for efficient incorporation of BHA into virions and tight lipid raft association. They also demonstrate that the domain is not absolutely required for virus viability in cell culture in the presence of compensatory mutations." @default.
• W2095682806 created "2016-06-24" @default.
• W2095682806 creator A5066012827 @default.
• W2095682806 creator A5076363097 @default.
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• W2095682806 date "2012-08-15" @default.
• W2095682806 modified "2023-09-24" @default.
• W2095682806 title "The Cytoplasmic Tail Domain of Influenza B Virus Hemagglutinin Is Important for Its Incorporation into Virions but Is Not Essential for Virus Replication in Cell Culture in the Presence of Compensatory Mutations" @default.
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• W2095682806 doi "https://doi.org/10.1128/jvi.01479-12" @default.
• W2095682806 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3486280" @default.
• W2095682806 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22896616" @default.
• W2095682806 hasPublicationYear "2012" @default.
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