Hemizygous Expression of Glucose-6-Phosphate Dehydrogenase in Erythrocytes of Heterozygotes for the Lesch-Nyhan Syndrome*
AUTOR(ES)
Nyhan, William L.
RESUMO
In women heterozygous for hypoxanthine guanine phosphoribosyl trasferase deficiency, the activity of this enzyme in the erythrocyte is usually normal. In a key kindred two such obligate heterozygotes were also heterozygous for glucose-6-phosphate dehydrogenase types A and B. The AB genotype was confirmed in one by assay of skin fibroblasts. Erythrocytes were exclusively of type B. These observations suggest the clonal origin of the hematopoietic system in these women from a primordial cell line with a single active X chromosome.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=286212Documentos Relacionados
- Inosinic acid dehydrogenase activity in the Lesch-Nyhan syndrome
- Rapid prenatal diagnosis of the Lesch-Nyhan syndrome.
- Z-nucleotide accumulation in erythrocytes from Lesch-Nyhan patients.
- Protein variations associated with Lesch-Nyhan syndrome.
- Hypoxanthine-guanine phosphoribosyltransferase: characteristics of the mutant enzyme in erythrocytes from patients with the Lesch-Nyhan syndrome