Transcriptional repressor involved in the regulation of the circadian rhythm by negatively regulating the activity of the clock genes and clock-controlled genes. Acts as the negative limb of a novel autoregulatory feedback loop (DEC loop) which differs from the one formed by the PER and CRY transcriptional repressors (PER/CRY loop). Both these loops are interlocked as it represses the expression of PER1 and in turn is repressed by PER1/2 and CRY1/2. Represses the activity of the circadian transcriptional activator: CLOCK-ARNTL/BMAL1 heterodimer by competing for the binding to E-box elements (5'-CACGTG-3') found within the promoters of its target genes. Negatively regulates its own expression and the expression of DBP and BHLHE41/DEC2. Acts as a corepressor of RXR and the RXR-LXR heterodimers and represses the ligand-induced RXRA/B/G, NR1H3/LXRA, NR1H4 and VDR transactivation activity (By similarity). Inhibits HNF1A-mediated transactivation of CYP1A2, CYP2E1 AND CYP3A11 (By similarity).

410 amino acids

MDEGIPHLQERQLLEHRDFIGLDYSSLYMCKPKRSLKRDDTKDTYKLPHRLIEKKRRDRINECIAQLKDLLPEHLKLTTLGHLEKAVVLELTLKHLKALTALTEQQHQKIIALQNGERSLKSPVQADLDAFHSGFQTCAKEVLQYLARFESWTPREPRCAQLVSHLHAVATQLLTPQVTPGRGPGRAPCSAGAAAASGSERVARCVPVIQRTQPGTEPEHDTDTDSGYGGEAEQGRAAVKQEPPGDPSAAPKRLKLEARGALLGPEPALLGSLVALGGGAPFAQPAAAPFCLPFYLLSPSAAAYVQPWLDKSGLDKYLYPAAAAPFPLLYPGIPAAAAAAAAAAFPCLSSVLSPPPEKAGSAAGAPFLAHEVAPPGSLRPQHAHSRTHLPHAVNPESSQEDATQPAKDAP

43.9 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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