The human and murine chromosomal localization for the gene for the retinal pigment epithelium-specific protein RPE65 was determined. Using interspecific backcross analysis, we mapped Rpe65 to the distal end of mouse chromosome 3. In the human, using a human-hamster hybrid panel, RPE65 was mapped to chromosome 1. By the use of fluorescence in situ hybridization, this localization was refined to 1p31. The mouse and human loci for this potential candidate gene for hereditary retinal disease do not match those of any known disease in mouse or man.
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