RT Journal Article SR Electronic(1) A1 Ban, Jozef A1 Czene, Stefan A1 Altaner, Cestmir A1 Callebaut, Isabelle A1 Krchnak, Viktor A1 Merza, Malik A1 Burny, Arsene A1 Kettmann, Richard A1 Portetelle, DanielYR 1992 T1 Mapping of sequential epitopes recognized by monoclonal antibodies on the bovine leukaemia virus external glycoproteins expressed in Escherichia coli by means of antipeptide antibodies JF Journal of General Virology, VO 73 IS 9 SP 2457 OP 2461 DO https://doi.org/10.1099/0022-1317-73-9-2457 PB Microbiology Society, SN 1465-2099, AB A λ gt11 cDNA library prepared from bovine leukaemia virus (BLV)-producing ovine cells was screened with a cocktail of anti-BLV gp51 monoclonal antibodies (MAbs). Four recombinant phages with inserts of about 2.5 kbp were isolated. One, λ BLV-gp51-1, was sequenced and shown to encode the C-terminal part of gp51 and all of gp30. This insert was subcloned into pEV-vrf1 and expressed in Escherichia coli N-4830-1 cells. The BLV product and a series of antipeptide antibodies were used to localize the sequential epitopes defined on BLV envelope glycoprotein gp51 by their reactivity with MAbs. Epitope B was localized to amino acids 180 to 205, B′ to residues 195 to 205, D and D′ to residues 218 to 237, and A to amino acids 249 to 260. All the mapped sequential epitopes were localized in the C-terminal half of BLV gp51. The results of epitope mapping with bacterially produced gp51 confirm the map obtained using native viral glycoprotein., UL https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-73-9-2457