Fig 5. Key region in ADAM17 responsible for CSFV entry.
(A) Schematic diagram of pADAM17, zfADAM17 and construction of the chimera ADAM17s. Chimera ADAM17s were constructed by replacing the indicated fragments of zfADAM17 with those of pADAM17. SP, signal peptide; PRO, pro-domain; MP, metalloproteinase domain (N223-V477); DD, disintegrin domain; CD, catalytic domain; TM, transmembrane domain; ICD, intracellular domain. (B) Relative binding of sE2-Fc with PK15 (WT), ADAM17-KO and ADAM17-KO stably transduced with pADAM17 (+pADAM17), zfADAM17 (+zfADAM17) or various ADAM17 chimeras by flow cytometry analysis. (C) Above cell lines were infected with indicated pseudoparticles. The lower limit of detection was 10 FFU/ml (dashed line). Asterisks indicate samples below the limit. (D) Western blotting of chimera ADAM17s in the cell lysates using anti-Flag antibody, with anti-GAPDH antibody as the control. Error bars in (B) and (C) indicate SD of the mean (n = 3). The data represent three independent experiments.
