The cysteine residues at the C-terminal tail of Bamboo mosaic virus triple gene block protein 2 are critical for efficient plasmodesmata localization of protein 1 in the same block
The conserved Cys residues of TGBp2 are critical for PD targeting of TGBp1. The effects of conserved Cys residues of TGBp2 on TGBp1 PD targeting are additive. The conserved Cys residues of TGBp2 are dispensable for self-targeting to PD.