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- Table of Contents
Facts about Circadian locomoter output cycles protein kaput.
It is derived from the Latin roots 'circa' (about) and 'diem' (day) and acts as an important regulator of a wide array of physiological functions including metabolism, sleep, body temperature, blood pressure, endocrine, immune, cardiovascular, and renal function. Consists of two major components: the central clock, residing in the suprachiasmatic nucleus (SCN) of the brain, and the peripheral clocks that are present in nearly every tissue and organ system.
Human | |
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Gene Name: | CLOCK |
Uniprot: | O15516 |
Entrez: | 9575 |
Belongs to: |
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No superfamily |
BHLHE8; circadian locomoter output cycles protein kaput; Class E basic helix-loop-helix protein 8; clock (mouse) homolog; clock homolog (mouse); CLOCK; EC 2.3.1.48; hCLOCK; KAT13D; KIAA0334bHLHe8circadian locomoter output cycles kaput protein
Mass (kDA):
95.304 kDA
Human | |
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Location: | 4q12 |
Sequence: | 4; NC_000004.12 (55427901..55547138, complement) |
Hair follicles (at protein level). Expressed in all tissues examined including spleen, thymus, prostate, testis, ovary, small intestine, colon, leukocytes, heart, brain, placenta, lung, liver, skeletal muscle, kidney and pancreas. Highest levels in testis and skeletal muscle. Low levels in thymus, lung and liver. Expressed in all brain regions with highest levels in cerebellum. Highly expressed in the suprachiasmatic nucleus (SCN).
Nucleus. Cytoplasm. Cytoplasm, cytosol. Shuffling between the cytoplasm and the nucleus is under circadian regulation and is ARNTL/BMAL1-dependent. Phosphorylated form located in the nucleus while the nonphosphorylated form found only in the cytoplasm. Sequestered to the cytoplasm in the presence of ID2 (By similarity). Localizes to sites of DNA damage in a H2AX-independent manner.
PMID: 10198158 by Steeves T.D.L., et al. Molecular cloning and characterization of the human CLOCK gene: expression in the suprachiasmatic nuclei.
PMID: 11441146 by Rutter J., et al. Regulation of clock and NPAS2 DNA binding by the redox state of NAD cofactors.