Parainfluenza gene maps

Gene maps of PIV, not to exact scale. Each negative-sense genome is drawn 3' to 5', which is the direction of gene transcription. Each encoded messenger RNA (mRNA) is shown as a rectangle; those encoding the envelope-associated proteins are shaded gray. The letter(s) within each rectangle identify the encoded protein(s); for the P gene, the protein encoded by the unedited mRNA is listed first. Nucleotide lengths are under each diagram; those representing extragenic leader, trailer, and intergenic regions are underlined. Amino acid lengths are shown above the line.