A 13 base pair deletion in exon 1 of HPRTIllinois forms a functional GUG initiation codon
| Autor: | Beverly L. Davidson, Nimrod Golovoy, Blake J. Roessler |
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| Rok vydání: | 1994 |
| Předmět: |
Hypoxanthine Phosphoribosyltransferase
Lesch-Nyhan Syndrome Molecular Sequence Data Locus (genetics) Transfection Exon Eukaryotic translation Start codon Complementary DNA Genetics medicine Humans Codon Genetics (clinical) Cell Line Transformed Sequence Deletion Base Composition Base Sequence biology DNA Exons Syndrome medicine.disease Hypoxanthine-guanine phosphoribosyltransferase Protein Biosynthesis biology.protein Phosphoribosyltransferase Lesch–Nyhan syndrome |
| Zdroj: | Human Genetics. 93:300-304 |
| ISSN: | 1432-1203 0340-6717 |
| DOI: | 10.1007/bf00212027 |
| Popis: | More than 50 mutations in the human hypoxanthine-guanine phosphoribosyltransferase (HPRT) locus have been described, yet only 2 alter the AUG initiation codon. One, variant HPRT1151, results in Lesch-Nyhan syndrome (LNS), and the other, HPRTIllinois, results in partial HPRT deficiency. Although previously undetectable, we used a sensitive gel assay to demonstrate that HPRTIllinois is not only active, but has a native Mr indistinguishable from normal. Confirmatory evidence of activity and native Mr is demonstrated following transfection of HPRT cells with expression plasmids containing cDNA sequences representing HPRTIllinois. These data provide support for the hypothesis that patient RT, or variant HPRTIllinois, is spared manifestations of the LNS as a result of translation at the newly formed GUG initiation codon. |
| Databáze: | OpenAIRE |
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