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Objective.To search for genomic DNA sequence of the augmenter of liver regeneration (ALR) of rat.Methods.Polymerase chain reaction (PCR) with specific primers was used to amplify the sequence from the rat genome.Results.A piece of genomic DNA sequence and a piece of pseudogene of rat ALR were identified.The lengths of the gene and pseudogene are 1508 bp and 442 bp,respectively.The ALR gene of rat includes 3 exons and 2 introns.The 442 bp DNA sequence may represent a pseudogene or a ALR related peptide.Predicted amino acid sequence analysis showed that there were 14 different amino acid residues between the gene and pseudogene.ALR related peptide is 84 amino acid residues in length and relates closely to ALR protein.Conclusion.There might be a multigene family of ALR in rat.
