May activate or repress transcription via interactions with sequence specific DNA-binding proteins (By similarity). Repression may be mediated at least in part by histone deacetylase activity (HDAC activity) (By similarity). Acts as a corepressor and in concert with CRY1, represses the transcription of the core circadian clock component PER2 (By similarity). Preferentially binds to dimethylated histone H3 'Lys-9' (H3K9me2) on the PER2 promoter (By similarity). Has a role in rRNA biogenesis together with PWP1 (By similarity).

Belongs to the MYBBP1A family.

1344 amino acids

MAEMKSPTKAEPASPAEAPQGDRRSLLEHSREFLDFFWDIAKPDQETRLRATEKLLEYLRTRPSDSEMKYALKRLITGLGVGREAARPCYSLALAQLLQSFEDIQLCDILGQIQEKYNLQAMNKAMMRPTLFANLFGVLALFQSGRLVKDKEALMKCVRLLKILSHHYNHLQGQPVKALVDILSEVPESMFQEILPKVLKGDMKVILSSPKYLELFLLARQRVPAELESLVGSVDLFSEDNIPSLVNILKVAANSVKKEQKLPDVALNLLRLALQENKFERFWKEVLEEGLLKKPSYTSSYMCFRLLGASLPLLSDEQLQLVMRGDLIRHFGEHMVVSKSQNPLRFIPEISAYVGTFLEGCQDDPKRQFTVMVAFTAITNQGLPVMPTFWRVTRFLNTEALQNYVTWLRDMFLQPDLDSLVDFSTANQKRVQVASLNVPERTVFRLRKWIIHRLVSLVDHLHLEKDEAVVEQIARFCLFHAFFKTKKATPQIPETKQHFSFPLEDGNRGVIVSAFFSLLQTLSVKFRQTPDLAENGKPWTYRLVQLADMLLKHNRNVANVTPLTAQQRQAWDQMMSTLKELEAQSSETRAIAFQHLLLLVGLHLFKSPAESCDVLGDIQTCIKKSMEQNLRRSRSRAKASQEPVWVEVMVEILLSLLAQPSNLMRQVVRSVFGHVCSHLTPRGLQLILAVLNPETNEDEEDNVVVTDTDEKQLKHGEDADSDSEDSKNSESDVDSEDGEESEEEDRDKDVDPGFRQQLMEVLQAGNALGGEEEEEEELGDEAMMALDQNLASLFAEQKMRIQARHEEKNKLQKEKQLRRDFQIRALDLIEVLVTKQPEHPLILELLEPLLNIIQRSMRSRGSTKQEQDLLHKTARIFMHHLCRARHYCHEVEPGAEALHAQVERLVQQAGNQADASVALYYFNASLYLLRVLKGNTTKRYQDGQKLEGADIKSEPKDSEVQTTSCLDLDFVTRVYSASLESLLTKRNSPLTIPMFLDLFSRYPVICKNLLPIVVQHVAGSSRPRHQAQACLLLQKALSARELRVCFEDPEWEQLISQVLGKTTQTLQTLGEAQSKGEHQRELSILELLNTVFRIVNHEKLSVDLTAFLGMLQGKQQKLQQNLQQGNHSSGSSRLYDLYWQAMNLLGVQRPKSEKKNVKDIPSDSQSPISTKRKKKGFLPETKKRKKLKSEGTTSEKKAASQQDAVTEGAMPAATGKDQPPSTGKKRRKRVKANTPSQVNGVTVAKSPAPNNPTLSPSTPPAKTPKVQKKKEKLSQVNGSTPVSPVEPESKKHQKALSTKEVKRRSSQSALPKKRARLSLVSRSPSLLQSGIRKRRVARRRVQTP

152.3 kDa

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

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