nesp55 gene
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Introduction
Bicistronic gene which also produces the ALEX protein from an overlapping reading frame. The GNAS locus is imprinted in a complex manner, giving rise to distinct paternally, maternally & biallelically expressed proteins.
- XLas isoforms are paternally derived
- Gnas isoforms are biallelically derived
- Nesp55 isoforms are maternally derived