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A majority of malignant tissues displayed moderate nuclear immunoreactivity, in some cases accompanied with weak cytoplasmic positivity.
GENE INFORMATION
Gene name
CLOCK (HGNC Symbol)
Synonyms
bHLHe8, KAT13D, KIAA0334
Description
Clock circadian regulator (HGNC Symbol)
Entrez gene summary
The protein encoded by this gene plays a central role in the regulation of circadian rhythms. The protein encodes a transcription factor of the basic helix-loop-helix (bHLH) family and contains DNA binding histone acetyltransferase activity. The encoded protein forms a heterodimer with ARNTL (BMAL1) that binds E-box enhancer elements upstream of Period (PER1, PER2, PER3) and Cryptochrome (CRY1, CRY2) genes and activates transcription of these genes. PER and CRY proteins heterodimerize and repress their own transcription by interacting in a feedback loop with CLOCK/ARNTL complexes. Polymorphisms in this gene may be associated with behavioral changes in certain populations and with obesity and metabolic syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]
O15516 [Direct mapping] Circadian locomoter output cycles protein kaput
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Enzymes ENZYME proteins Transferases Predicted intracellular proteins Transcription factors Basic domains Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)
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GO:0000077 [DNA damage checkpoint] GO:0000978 [RNA polymerase II core promoter proximal region sequence-specific DNA binding] GO:0000982 [transcription factor activity, RNA polymerase II core promoter proximal region sequence-specific binding] GO:0001046 [core promoter sequence-specific DNA binding] GO:0001047 [core promoter binding] GO:0001190 [transcriptional activator activity, RNA polymerase II transcription factor binding] GO:0003677 [DNA binding] GO:0003700 [transcription factor activity, sequence-specific DNA binding] GO:0004402 [histone acetyltransferase activity] GO:0005515 [protein binding] GO:0005634 [nucleus] GO:0005654 [nucleoplasm] GO:0005667 [transcription factor complex] GO:0005694 [chromosome] GO:0005737 [cytoplasm] GO:0006325 [chromatin organization] GO:0006355 [regulation of transcription, DNA-templated] GO:0006357 [regulation of transcription from RNA polymerase II promoter] GO:0006366 [transcription from RNA polymerase II promoter] GO:0007165 [signal transduction] GO:0007283 [spermatogenesis] GO:0007623 [circadian rhythm] GO:0009416 [response to light stimulus] GO:0009648 [photoperiodism] GO:0009649 [entrainment of circadian clock] GO:0016573 [histone acetylation] GO:0031490 [chromatin DNA binding] GO:0032922 [circadian regulation of gene expression] GO:0033391 [chromatoid body] GO:0042634 [regulation of hair cycle] GO:0043161 [proteasome-mediated ubiquitin-dependent protein catabolic process] GO:0043231 [intracellular membrane-bounded organelle] GO:0043565 [sequence-specific DNA binding] GO:0045892 [negative regulation of transcription, DNA-templated] GO:0045893 [positive regulation of transcription, DNA-templated] GO:0045944 [positive regulation of transcription from RNA polymerase II promoter] GO:0046983 [protein dimerization activity] GO:0050729 [positive regulation of inflammatory response] GO:0050796 [regulation of insulin secretion] GO:0051092 [positive regulation of NF-kappaB transcription factor activity] GO:0051775 [response to redox state] GO:0070888 [E-box binding] GO:0071479 [cellular response to ionizing radiation] GO:2000074 [regulation of type B pancreatic cell development] GO:2000323 [negative regulation of glucocorticoid receptor signaling pathway]