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    Genomics. 1992 Nov;14(3):796-8.

    Identification of a processed pseudogene related to the functional gene encoding the GM2 activator protein: localization of the pseudogene to human chromosome 3 and the functional gene to human chromosome 5.

    Xie B, Kennedy JL, McInnes B, Auger D, Mahuran D.

    Research Institute, Hospital For Sick Children, Toronto, Ontario, Canada.

    The GM2 activator protein is an essential substrate cofactor for the hydrolysis of GM2 ganglioside by lysosomal beta-hexosaminidase A (EC 3.2.1.52). There have been conflicting reports as to the chromosomal localization of the gene encoding the activator. We demonstrate here that these conflicts were caused by the presence of a previously unidentified processed activator-pseudogene on chromosome 3, and we confirm a previous ELISA-based localization of the functional activator gene to chromosome 5. Our data indicate that the functional activator locus can still be considered a candidate site for defects causing some forms of spinal muscular atrophy.

    PMID: 1427911 [PubMed - indexed for MEDLINE]

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