An hPer2 phosphorylation site mutation in familial advanced sleep phase syndrome - PubMed (original) (raw)
. 2001 Feb 9;291(5506):1040-3.
doi: 10.1126/science.1057499.
Affiliations
- PMID: 11232563
- DOI: 10.1126/science.1057499
An hPer2 phosphorylation site mutation in familial advanced sleep phase syndrome
K L Toh et al. Science. 2001.
Abstract
Familial advanced sleep phase syndrome (FASPS) is an autosomal dominant circadian rhythm variant; affected individuals are "morning larks" with a 4-hour advance of the sleep, temperature, and melatonin rhythms. Here we report localization of the FASPS gene near the telomere of chromosome 2q. A strong candidate gene (hPer2), a human homolog of the period gene in Drosophila, maps to the same locus. Affected individuals have a serine to glycine mutation within the casein kinase Iepsilon (CKIepsilon) binding region of hPER2, which causes hypophosphorylation by CKIepsilon in vitro. Thus, a variant in human sleep behavior can be attributed to a missense mutation in a clock component, hPER2, which alters the circadian period.
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