Isolation and characterization of an ornithine aminotransferase-related sequence (OATL3) mapping to 10q26.

We used a near full-length human ornithine delta-amino-transferase cDNA, huOAT6, as a probe under low stringency hybridization conditions to identify a new autosomal ornithine delta-aminotransferase-related sequence (OATL3). Cloning and characterization of this sequence reveal it to be a partial nonprocessed pseudogene corresponding to exon 3 and flanking intronic sequences of the ornithine delta-aminotransferase structural gene. Using somatic cell hybrids and fluorescence in situ hybridization, we mapped OATL3 to 10q26, adjacent to the ornithine delta-aminotransferase structural gene locus.