Document 0071 DOCN M9490071 TI Removal of the cleavage site of recombinant feline immunodeficiency virus envelope protein facilitates incorporation of the surface glycoprotein in immune-stimulating complexes. DT 9411 AU Rimmelzwaan GF; Siebelink KH; Huisman RC; Moss B; Francis MJ; Osterhaus AD; Department of Virology, Erasmus University Rotterdam, The; Netherlands. SO J Gen Virol. 1994 Aug;75 ( Pt 8):2097-102. Unique Identifier : AIDSLINE MED/94322005 AB Recombinant vaccinia viruses were constructed that expressed the complete env gene of feline immunodeficiency virus with or without the nucleotide sequence encoding the cleavage site between the surface (SU) protein and the transmembrane (TM) protein. The removal of this cleavage site resulted in the expression of a 150K protein that was processed into a 130K protein and was not cleaved into the SU and the TM proteins. Removal of the cleavage site also facilitated incorporation of the SU protein in immune-stimulating complexes (iscoms). Antibody responses to both an SU and a TM peptide representing two immunodominant B cell epitopes were measured. These were higher in cats immunized with iscoms prepared from the cleavage site-deleted envelope protein than in cats immunized with iscoms prepared from the native envelope protein or immunized with the envelope protein and the adjuvant Quil A. DE Animal Antibodies, Viral/*BIOSYNTHESIS Antigens, Viral/GENETICS/*IMMUNOLOGY B-Lymphocytes/IMMUNOLOGY Base Sequence Cats Feline Acquired Immunodeficiency Syndrome/PREVENTION & CONTROL Gene Products, env/GENETICS/*IMMUNOLOGY Immunodeficiency Virus, Feline/GENETICS/*IMMUNOLOGY Immunodominant Epitopes/IMMUNOLOGY Molecular Sequence Data Protein Processing, Post-Translational/GENETICS Recombinant Proteins/IMMUNOLOGY Vaccines, Synthetic/IMMUNOLOGY JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).