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. 1989 Jul;84(1):342–346. doi: 10.1172/JCI114160

Molecular basis of hypoxanthine-guanine phosphoribosyltransferase deficiency in ten subjects determined by direct sequencing of amplified transcripts.

B L Davidson 1, S A Tarlé 1, T D Palella 1, W N Kelley 1
PMCID: PMC303988  PMID: 2738157

Abstract

Hypoxanthine-guanine phosphoribosyltransferase (HPRT) deficiency is an inborn error of purine metabolism. Mutant HPRT gene sequences from patients deficient in enzyme activity have previously been characterized by cDNA cloning or amino acid sequencing techniques. The presence of HPRT-specific mRNA in nearly all deficient subjects, as well as the small size of the HPRT mRNA (1,400 bp), make the polymerase chain reaction (PCR) an alternative for the identification of mutations at this locus. In this report we use the PCR to identify previously undetermined mutations in HPRT mRNA from B lymphoblasts derived from 10 deficient individuals. Six of these variants contain single point mutations, three contain deletions, and one contains a single nucleotide insertion. Several of these mutations map near previously identified HPRT variants, and are located in evolutionarily conserved regions of the molecule.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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