Fig. 1.

Porcine A3 gene locus and its transcriptional potential. (A) The gene locus consists of the two single domains, Z2 (orange) and Z3 (blue). The identified exon-intron composition was compared to published data by LaRue et al. (48). Regions that differ between the two studies are enlarged. The exons are shown as filled boxes, whereas the untranslated regions are indicated as open boxes. Black lines indicate introns, and stars mark the position of the zinc-coordinating domains. The start codon is plotted as a triangle, and the stop codon is shown as a square. The scheme is depicted true to scale. All mRNA transcripts identified by LaRue and coworkers (B) and by this study (C) are listed and include the nucleotide lengths in base pairs (bp) of the mRNA as well as the lengths of amino acid (aa) sequences.