FIG 1.

Representation of rMV-ΔV and rMV-ΔC cloning. (A) Schematic diagram of the MV genome and gene order showing that the P gene encodes the P, V, and C proteins. Sites used for insertion of additional transcription units (ATUs) within the MV genome are represented. (B) Portion of the nucleotide sequence of the P gene from MV (Schwarz strain; GenBank accession no. AF266291.1). For MV-ΔV construction, the editing site was mutated by replacing the adenine at position 2493 of the MV genome with uracil. For MV-ΔC, the start codon was mutated by replacing the uracil at position 1830 with cytosine, and a stop codon was introduced by replacing the guanine at position 1845 with adenine (the introduced nucleotides are underlined).