Figure 2.

Aldehyde oxidase genes in vertebrates. The figure contains a schematic representation of the aldehyde oxidase genes in selected vertebrates for which complete or almost complete genomic sequence data are available. Orthologous genes are indicated with the same shadowing. The direction of transcription is indicated by arrows. Pseudogenes are crossed through and asterisked. The exons identified in the pseudogenes are also shown. The chromosomal location is indicated on the right (ND, not determined). Whenever the structure of the gene is predicted solely on the basis of the genomic sequence, and the corresponding cDNAs have not been characterised, the GenBank locus number (LOC) is indicated. At present, it is unclear whether Macaca mulatta AOX4 is a functional gene or a pseudogene.