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• W2150535648 endingPage "3798" @default.
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• W2150535648 abstract "To examine the requirements of the human respiratory syncytial virus (HRSV) SH (small hydrophobic), G (attachment), and F (fusion) proteins for virus infectivity and morphology, we used the prototype A2 strain of HRSV to generate a series of cDNAs from which (i) the SH open reading frame (ORF), (ii) the SH and G ORFs, or (iii) the SH, G, and F ORFs were deleted. Each deleted ORF was replaced as follows: the SH ORF was replaced with that of green fluorescent protein; the G ORF was replaced with that of G(vsv), a chimeric glycoprotein consisting of the vesicular stomatitis Indiana virus (VSIV) G protein ecto- and transmembrane domains coupled to the HRSV F cytoplasmic tail; and the F ORF was replaced with that of marker protein beta-glucuronidase. The number of genes and the intergenic junctions in the constructs were kept as found in A2 virus in order to maintain authentic levels of transcription. Infectious viruses were recovered from all three engineered cDNAs and designated RSdeltash, RSdeltash,g/G(vsv), and RSdeltash,g,f/G(vsv), respectively. Low-pH-induced syncytium formation was observed in cells infected with viruses RSdeltaSH,G/G(vsv) and RSdeltaSH,G,F/G(vsv), indicating that G(vsv) was expressed and functional. Neutralization of infectivity by anti-VSIV G antibodies and inhibition of entry by ammonium chloride showed that RSdeltaSH,G,F/G(vsv) infectivity was mediated by G(vsv) and that an acidification step was required for entry into the host cell, similar to VSIV virions. All three engineered viruses displayed growth kinetics and virus yields similar to a wild-type A2 virus, both in Vero and HEp-2 cells. Abundant virus-induced filaments were observed at the surface of cells infected with each of the three engineered viruses or with virus A2, indicating that neither the SH and G proteins nor the F protein ecto- and transmembrane domains were required for the formation of these structures. This is the first report of the recovery of an infectious HRSV lacking a fusion protein of the Paramyxoviridae family and of manipulation of the HRSV entry pathway via incorporation of a nonparamyxoviral transmembrane glycoprotein." @default.
• W2150535648 created "2016-06-24" @default.
• W2150535648 creator A5057682074 @default.
• W2150535648 creator A5061397335 @default.
• W2150535648 creator A5090554476 @default.
• W2150535648 date "2003-03-15" @default.
• W2150535648 modified "2023-10-11" @default.
• W2150535648 title "Infectivity of a Human Respiratory Syncytial Virus Lacking the SH, G, and F Proteins Is Efficiently Mediated by the Vesicular Stomatitis Virus G Protein" @default.
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• W2150535648 doi "https://doi.org/10.1128/jvi.77.6.3785-3798.2003" @default.
• W2150535648 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/149529" @default.
• W2150535648 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/12610153" @default.
• W2150535648 hasPublicationYear "2003" @default.
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