This gene is a member of the Period family of genes and is expressed in a circadian pattern in the suprachiasmatic nucleus, the primary circadian pacemaker in the mammalian brain. Genes in this family encode components of the circadian rhythms of locomotor activity, metabolism, and behavior. Circadian expression in the suprachiasmatic nucleus continues in constant darkness, and a shift in the light/dark cycle evokes a proportional shift of gene expression in the suprachiasmatic nucleus. The specific function of this gene is not yet known. Alternative splicing has been observed in this gene; however, these variants have not been fully described.
PER1; period homolog 1 (Drosophila); PER, period (Drosophila) homolog 1; period circadian protein homolog 1; RIGUI; Circadian clock protein PERIOD 1; Circadian clock protein PERIOD1; Circadian pacemaker protein RIGUI; hPER 1; hPER; hPER1; KIAA0482; MGC88021; PER 1; PER; PER1 protein; Period 1; Period drosophila homolog of; Period homolog 1; Period1; Period, drosophila, homolog of