“…ORFs 2-4 are known as the triple gene block (TGB), encoding three polypeptides of 25, 12, and 8 kDa, respectively and are involved in viral movement [16,24]. The TGB proteins are highly conserved in members of the genera Potexvirus, Hordeivirus, Benyvirus and Carlavirus [6,15,23]. ORF5 encodes the capsid protein (CP) with an estimated molecular mass of 25 kDa and plays an significant role in cell-to-cell movement of PVX particles and translational regulation of the PVX RNA genome [10,14].…”