Molecular diagnosis of alkaptonuria mutation by analysis of homogentisate 1,2 dioxygenase mRNA from urine and blood
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Molecular diagnosis of alkaptonuria mutation by analysis of homogentisate 1,2 dioxygenase mRNA from urine and blood
Am J Med Genet.
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Abstract
Alkaptonuria (AKU) is caused by lack of homogentisate 1, 2 dioxygenase (HGO) activity. From the complete sequence of a human HGO cDNA, primers were designed in order to obtain reverse transcription-polymerase chain reaction products from tissues with ectopic transcription amenable to diagnostic analysis. A search for mutations in HGO cDNA was performed in an AKU family using urine and blood samples. The results show complete cosegregation (Z = 6.32; theta = 0) between a C-->T transition at position 817 of the human HGO cDNA and AKU. This mutation predicts a Pro-->Ser replacement at amino acid 230, and generates an EcoRV site.
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