Abstract
The chromosomal region 15q11-q13 contains 47 copies of a brain-specific small nucleolar RNA (snoRNA), HBII-52. Kishore et al. now show that this snoRNA regulates alternative splicing of a specific pre-messenger RNA encoding a serotonin receptor by masking an exonic silencer. This snoRNA is not expressed in patients suffering from Prader-Willi syndrome and causes patients to express different isoforms of this serotonin receptor. Previously, it has been unclear how the loss of the Prader-Willi-imprinted region causes the disease, because most of its genes do not encode protein. S. Kishore, S. Stamm, The snoRNA HBII-52 regulates alternative splicing of the serotonin receptor 2C. Science 311 , 230-232 (2006). [Abstract] [Full Text]
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