Figure 1.
Map of human metapneumovirus (hMPV) antigenome and the mutations introduced to generate the M2-2 mutants. The overlapped open reading frame of M2-1 and M2-2 are shown as a gray rectangle with oligonucleotide sites given above. M2-2 amino acids labeled with stars were mutated to alanine to abolish interested PDZ binding motifs.