Figure 1

Genomic organization of cytochrome b561-encoding genes in different species. Species and genes shown are: Arabidopsis thaliana (Artb561-1), Oryza sativa (Orsb561), Craterostigma plantagineum (Crpb561), Caenorhabdites elegans (Caeb561-1), Homo sapiens (genes encoding chromaffin granule cytochrome b561 (Hosb561-1) and duodenal cytochrome b561 (Hosb561-2) respectively), Mus musculus (gene for the newly discovered 'ubiquitous' isoform, Mumb561-3), and Drosophila melanogaster (Drmb561-1). Boxes represent exons and lines between correspond to introns or untranslated regions. The numbers in the exons represent starting and ending nucleotide positions when introns are ignored; the numbers above the lines represent the length of introns in base-pairs.