>d4fiv__ b.50.1.1 (-) Feline immunodeficiency virus (FIV) protease {Feline immunodeficiency virus} vgttttlekrpeilifvngypikflldtgaditilnrrdfqvknsiengrqnmigvgggk rgtnyinvhleirdenyktqcifgnvcvlednsliqpllgrdnmikfnirlvm