FIG 4.

Translational frameshift of capsid and chaperone mRNAs. A translational −1 frameshifting near the end of transcribed genes 6 and 13 results in synthesis of two different-length products, gp6-gp7 (A) and gp13-gp14 (B), respectively. The proposed slippery sequence is shaded in gray. Amino acid sequences depicted in bold letters correspond to peptides detected by MALDI-MS for the short and long forms of the protein. The underlined sequence in gp6-gp7 (A) corresponds to the N-terminal peptide detected by MALDI-MS and confirms the predicted proteolytical processing.