Chromosomal distribution of human ABC transporter pseudogenes and protein-coding genes. Pseudogenes of the human ABC transporter family are widely distributed throughout the human genome. Shown are the chromosomal localizations (colored arrows) of ABC transporter pseudogenes (right-hand side of each chromosome) and their parental protein-coding genes (left) in the human genome. Pairs of parental genes and pseudogenes are represented by the same arrow color code. Transcribed pseudogenes are green shaded. A close-up view of the ABC transporter pseudogene cluster (30 Mb) on chromosome 16p is shown at the bottom. Arrows indicate the 5'-> 3' orientation of the pseudogenes on chr. 16p and distances between adjacent pseudogenes are detailed (Mb). ABCA14P, ABCA15P1 and ABCA15P2, respectively, represent pseudogenes for which functional counterparts have only been reported in rodents (Abca14, Abca15). The ideogram was generated using the ColoredChromosomes software .