FIG. 2.

Multiple sequence alignment of the reovirus cell attachment proteins. The predicted amino acid sequences of the two ARV ςC proteins determined in this study (ARV-176 [176]) and ARV-138 [138]) and of the gene product of the 3′-proximal ORF of NBV (nbv) were aligned with the predicted sequences of the ςC cell attachment proteins of two previously sequenced ARV isolates (ARV-S1133 [s33] and ARV-Ram1 [ram]) using PILEUP and shaded using BOXSHADE. The asterisks denote the locations of the apolar residues present in the conserved heptad repeat structure. Identical residues present in three or more of the aligned sequences are indicated by black background shading, and grey shading denotes conservation of similar residues. Dots indicate insertions.