| CPC A61K 39/12 (2013.01) [C07K 14/005 (2013.01); C12N 7/00 (2013.01); A61K 2039/5254 (2013.01); A61P 11/00 (2018.01); C12N 2760/18521 (2013.01); C12N 2760/18534 (2013.01); C12N 2760/18562 (2013.01)] | 16 Claims |
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1. A respiratory syncytial virus (RSV) F protein comprising K at position 357 and Y at position 371, each relative to amino acid sequence as set forth in SEQ ID NO: 4, provided that the RSV F protein has less than 98% sequence identity to SEQ ID NO: 4; and wherein the RSV F protein has more than 90% sequence identity to SEQ ID NO: 1.
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