FIG. 2.

Schematic diagrams presenting the predicted G protein length variability among the HRSV-B Belgian isolates. The linear presentations are given according to the reference strain WV/B1/85 with the two variable regions and the central conserved region (residues 153 to 221) indicated above the top diagram. The absolutely conserved amino acid region (amino acid positions 164 to 187) among the HRSV-B isolates is indicated with a double line (A). The underlined sequences present the three alternative termination codons described previously (32), and the predicted full protein lengths of Belgian representative sequences are given. The six-nucleotide deletion is indicated with a filled box (B, C, and E), the 60-nt duplication is indicated with a large open and divided box (D to F), and the three-nucleotide insertions are indicated with a small open box (G to I). The position of the frame-shifting in the frameshift mutant is indicated (•) in panel C. The two premature terminated sequences with their respective protein lengths are presented in panels F and H.