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N-acetylglutamate synthase (NAGS) is a mitochondrial enzyme that catalyzes the formation of N-acetylglutamate, an essential allosteric activator of carbamyl phosphate synthetaseI, the first enzyme of the urea cycle. Liver NAGS deficiency has previously been found in a small number of patients with hyperammonemia. The mouse and human NAGS genes have recently been cloned and expressed in our laboratory...
Abstract. The 5q- syndrome is a myelodysplastic syndrome with the 5q deletion as the sole karyotypic abnormality. The human ATX1 homologue (HAH1), encodes a copper-binding protein with a role in antioxidant defence. We have mapped this gene to the 3Mb critical region of gene loss of the 5q- syndrome within 5q32, flanked by the genes for ADRB2 and IL12B, using gene dosage analysis. Fine physical mapping...
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