A mutation on exon 6 of guanidinoacetate methyltransferase (GAMT) gene supports a different function for isoform a and b of GAMT enzyme.
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Leuzzi V, Carducci C, Carducci C, Matricardi M, Bianchi MC, Di Sabato ML, Artiola C, Antonozzi I
A mutation on exon 6 of guanidinoacetate methyltransferase (GAMT) gene supports a different function for isoform a and b of GAMT enzyme.
Mol Genet Metab. 2006 Jan;87(1):88-90. Epub 2005 Nov 15.
- PubMed ID
- 16293431 [ View in PubMed]
- Abstract
A new patient affected by Guanidinoacetate methyltransferase (GAMT) deficiency was reported. This 13-year-old girl presented with mental retardation, as main symptom, associated with a typical pattern of biochemical and neurochemical (brain magnetic resonance spectroscopy) alterations. Molecular study detected a L197P transition on exon 6 of the GAMT gene. Since this mutation leaves the isoform B of the GAMT enzyme unaffected, the occurrence of biochemical alterations and disease in this subject testifies against the possibility that isoform b had GAMT activity.