MOESM1 of Development of a recombinant Newcastle disease virus-vectored vaccine for infectious bronchitis virus variant strains circulating in Egypt
journal contributionposted on 11.02.2019 by Hassanein Abozeid, Anandan Paldurai, Berin Varghese, Sunil Khattar, Manal Afifi, Sahar Zouelfakkar, Ayman El-Deeb, Magdy El-Kady, Siba Samal
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Additional file 1. Cloning of three different forms of IBV S protein into pUC57. (A) Chicken-codon-optimized wild type IBV S gene cloned into pUC57 (pUC57-CO.S). IBV S protein domains: ectodomain, transmembrane (TM) and cytoplasmic tail are represented in blue boxes, preceded by NDV gene-end (GE, in Red), intergenic (IGS, in black), gene-start (GS, in green) and Kozak (in white) sequences, and flanked by PmeI sites. Dotted numbers indicate amino acid positions in the cytoplasmic tail of IBV S protein. Arrows with circled numbers indicate the primers used to induce the S protein modifications using pUC57-CO.S as template (refer Table 1 for the primers). (B) Primers 1, 2, 3 and 4 used to induce the “Y1145A” mutation and add the last 12 aa of the cytoplasmic tail of NDV F protein (Fct12, represented in grey box) to create pUC57-CO.S(Y1145A)+Fct12 (C) Primers 1 and 5 used to replace the cytoplasmic tail of IBV S protein by the last 12 aa of the cytoplasmic tail of NDV F protein to create pUC57-CO.SΔct+Fct12.