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    Gene. 1999 Nov 15;240(1):233-8.

    Human and mouse SYBL1 gene structure and expression.

    Matarazzo MR, Cuccurese M, Strazzullo M, Vacca M, Curci A, Miano MG, Cocchia M, Mercadante G, Torino A, D'Urso M, Ciccodicola A, D'Esposito M.

    International Institute of Genetics and Biophysics, CNR, 80125, Naples, Italy.

    SYBL1 is a gene in the 320kb human pseudo-autosomal region at the terminus of Xq and Yq. In contrast to other pseudoautosomal genes, SYBL1 is inactivated on one X in every female cell, and is also inactive on the Y of male cells. Hypermethylation of the CpG island associated with the human gene is involved in this phenomenon. In an attempt to further examine its regulation, the genomic organization of the X-linked mouse Sybl1 homolog was analyzed and compared with the human gene. Human and mouse show the same exon number, exon-intron junctions and a highly conserved basal promoter. The structural and functional conservation of basal regulatory regions suggests that inactivation is imposed by similar auxiliary epistatic regulatory mechanism.

    PMID: 10564831 [PubMed - indexed for MEDLINE]

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