BioPAX pathway converted from "MAML recruits CDK8:CCNC to xNICD1" in the Reactome database. LEFT-TO-RIGHT MAML recruits CDK8:CCNC to xNICD1 Recruitment of CDK8 and cyclin C (CDK8:CCNC) by MAML, a constituent of the NOTCH1 coactivator complex, was studied in HeLa cells in which tagged human MAML, CDK8 and CCNC proteins were expressed together with a tagged Xenopus NICD1 (xNICD1). Authored: Egan, SE, Orlic-Milacic, M, 2011-11-14 Reviewed: Haw, R, 2012-02-06 Edited: Orlic-Milacic, M, 2012-02-10 Edited: D'Eustachio, P, 2012-02-06 CDK8:CCNC Reactome DB_ID: 1604465 nucleoplasm GENE ONTOLOGY GO:0005654 CDK8 Reactome DB_ID: 212440 UniProt:P49336 CDK8 CDK8 FUNCTION Component of the Mediator complex, a coactivator involved in regulated gene transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. Mediator is recruited to promoters by direct interactions with regulatory proteins and serves as a scaffold for the assembly of a functional pre-initiation complex with RNA polymerase II and the general transcription factors. Phosphorylates the CTD (C-terminal domain) of the large subunit of RNA polymerase II (RNAp II), which may inhibit the formation of a transcription initiation complex. Phosphorylates CCNH leading to down-regulation of the TFIIH complex and transcriptional repression. Recruited through interaction with MAML1 to hyperphosphorylate the intracellular domain of NOTCH, leading to its degradation.SUBUNIT Component of the Mediator complex, which is composed of MED1, MED4, MED6, MED7, MED8, MED9, MED10, MED11, MED12, MED13, MED13L, MED14, MED15, MED16, MED17, MED18, MED19, MED20, MED21, MED22, MED23, MED24, MED25, MED26, MED27, MED29, MED30, MED31, CCNC, CDK8 and CDC2L6/CDK11. The MED12, MED13, CCNC and CDK8 subunits form a distinct module termed the CDK8 module. Mediator containing the CDK8 module is less active than Mediator lacking this module in supporting transcriptional activation. Individual preparations of the Mediator complex lacking one or more distinct subunits have been variously termed ARC, CRSP, DRIP, PC2, SMCC and TRAP. The cylin/CDK pair formed by CCNC/CDK8 also associates with the large subunit of RNA polymerase II. Interacts with CTNNB1, GLI3 and MAML1.SIMILARITY Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily. Homo sapiens NCBI Taxonomy 9606 UniProt P49336 1 EQUAL 464 EQUAL Reactome Database ID Release 82 212440 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=212440 Reactome R-HSA-212440 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-212440.1 Reactome http://www.reactome.org 1 CCNC CycC Reactome DB_ID: 212418 UniProt:P24863 CCNC CCNC FUNCTION Component of the Mediator complex, a coactivator involved in regulated gene transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. Mediator is recruited to promoters by direct interactions with regulatory proteins and serves as a scaffold for the assembly of a functional preinitiation complex with RNA polymerase II and the general transcription factors. Binds to and activates cyclin-dependent kinase CDK8 that phosphorylates the CTD (C-terminal domain) of the large subunit of RNA polymerase II (RNAp II), which may inhibit the formation of a transcription initiation complex.SUBUNIT Component of the Mediator complex, which is composed of MED1, MED4, MED6, MED7, MED8, MED9, MED10, MED11, MED12, MED13, MED13L, MED14, MED15, MED16, MED17, MED18, MED19, MED20, MED21, MED22, MED23, MED24, MED25, MED26, MED27, MED29, MED30, MED31, CCNC, CDK8 and CDC2L6/CDK11. The MED12, MED13, CCNC and CDK8 subunits form a distinct module termed the CDK8 module. Mediator containing the CDK8 module is less active than Mediator lacking this module in supporting transcriptional activation. Individual preparations of the Mediator complex lacking one or more distinct subunits have been variously termed ARC, CRSP, DRIP, PC2, SMCC and TRAP. The cylin/CDK pair formed by CCNC/CDK8 also associates with the large subunit of RNA polymerase II.TISSUE SPECIFICITY Highest levels in pancreas. High levels in heart, liver, skeletal muscle and kidney. Low levels in brain.SIMILARITY Belongs to the cyclin family. Cyclin C subfamily. UniProt P24863 1 EQUAL 283 EQUAL Reactome Database ID Release 82 212418 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=212418 Reactome R-HSA-212418 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-212418.1 1 Reactome Database ID Release 82 1604465 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=1604465 Reactome R-HSA-1604465 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-1604465.1 ComplexPortal CPX-1969 additional information MI MI:0361 xNOTCH1 Coactivator Complex Reactome DB_ID: 2064911 Converted from EntitySet in Reactome MAML Reactome DB_ID: 212357 MAML1 Reactome DB_ID: 212416 UniProt:Q92585 MAML1 MAML1 KIAA0200 FUNCTION Acts as a transcriptional coactivator for NOTCH proteins. Has been shown to amplify NOTCH-induced transcription of HES1. Enhances phosphorylation and proteolytic turnover of the NOTCH intracellular domain in the nucleus through interaction with CDK8. Binds to CREBBP/CBP which promotes nucleosome acetylation at NOTCH enhancers and activates transcription. Induces phosphorylation and localization of CREBBP to nuclear foci. Plays a role in hematopoietic development by regulating NOTCH-mediated lymphoid cell fate decisions.SUBUNIT Interacts (via N-terminus) with NOTCH1, NOTCH2, NOTCH3 and NOTCH4 (via ankyrin repeat region). Interacts (via N-terminus) with p53 (via DNA-binding region). Forms a DNA-binding complex with Notch proteins and RBPSUH/RBP-J kappa/CBF1. Also binds CREBBP/CBP and CDK8.Forms a complex with PRAG1, NOTCH1 and MAML1, in a MAML1-dependent manner (By similarity).TISSUE SPECIFICITY Widely expressed with highest levels in heart, pancreas, peripheral blood leukocytes and spleen.DOMAIN The C-terminal region is required for transcriptional activation.SIMILARITY Belongs to the mastermind family. UniProt Q92585 1 EQUAL 1016 EQUAL Reactome Database ID Release 82 212416 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=212416 Reactome R-HSA-212416 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-212416.1 MAML2 Reactome DB_ID: 212353 UniProt:Q8IZL2 MAML2 MAML2 KIAA1819 FUNCTION Acts as a transcriptional coactivator for NOTCH proteins. Has been shown to amplify NOTCH-induced transcription of HES1. Potentiates activation by NOTCH3 and NOTCH4 more efficiently than MAML1 or MAML3.SUBUNIT Interacts through its N-terminal region with the ankyrin repeat region of the Notch proteins NOTCH1, NOTCH2, NOTCH3 and NOTCH4. Forms a DNA-binding complex with Notch proteins and RBPSUH/RBP-J kappa.TISSUE SPECIFICITY Widely expressed with high levels detected in placenta, salivary gland and skeletal muscle.DOMAIN The C-terminal domain is required for transcriptional activation.DISEASE A chromosomal aberration involving MAML2 is found in mucoepidermoid carcinomas, benign Warthin tumors and clear cell hidradenomas. Translocation t(11;19)(q21;p13) with CRTC1. The fusion protein consists of the N-terminus of CRTC1 joined to the C-terminus of MAML2. The reciprocal fusion protein consisting of the N-terminus of MAML2 joined to the C-terminus of CRTC1 has been detected in a small number of mucoepidermoid carcinomas.SIMILARITY Belongs to the mastermind family. UniProt Q8IZL2 1 EQUAL 1156 EQUAL Reactome Database ID Release 82 212353 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=212353 Reactome R-HSA-212353 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-212353.1 MAML3 MAML3_HUMAN Reactome DB_ID: 349689 UniProt:Q96JK9 MAML3 MAML3 KIAA1816 FUNCTION Acts as a transcriptional coactivator for NOTCH proteins. Has been shown to amplify NOTCH-induced transcription of HES1.SUBUNIT Interacts through its N-terminal region with the ankyrin repeat region of the Notch proteins NOTCH1, NOTCH2, NOTCH3 and NOTCH4. Forms a DNA-binding complex with Notch proteins and RBPSUH/RBP-J kappa.DOMAIN The C-terminal domain is required for transcriptional activation.SIMILARITY Belongs to the mastermind family. UniProt Q96JK9 1 EQUAL 1134 EQUAL Reactome Database ID Release 82 349689 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=349689 Reactome R-HSA-349689 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-349689.1 MAMLD1 MAMD1_HUMAN Reactome DB_ID: 349692 UniProt:Q13495 MAMLD1 MAMLD1 CG1 CXorf6 FUNCTION Transactivates the HES3 promoter independently of NOTCH proteins. HES3 is a non-canonical NOTCH target gene which lacks binding sites for RBPJ.TISSUE SPECIFICITY Expressed in fetal brain, fetal ovary and fetal testis. Expressed in adult brain, ovary, skin, testis, uterus. Highly expressed in skeletal muscle.INDUCTION By NR5A1.SIMILARITY Belongs to the mastermind family. UniProt Q13495 1 EQUAL 774 EQUAL Reactome Database ID Release 82 349692 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=349692 Reactome R-HSA-349692 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-349692.1 Reactome Database ID Release 82 212357 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=212357 Reactome R-HSA-212357 2 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-212357.2 1 Converted from EntitySet in Reactome PCAF Reactome DB_ID: 350078 PCAF KAT2B PCAF_HUMAN Histone acetyltransferase PCAF Reactome DB_ID: 352430 UniProt:Q92831 KAT2B KAT2B PCAF FUNCTION Functions as a histone acetyltransferase (HAT) to promote transcriptional activation (PubMed:8945521). Has significant histone acetyltransferase activity with core histones (H3 and H4), and also with nucleosome core particles (PubMed:8945521). Also acetylates non-histone proteins, such as ACLY, MAPRE1/EB1, PLK4, RRP9/U3-55K and TBX5 (PubMed:9707565, PubMed:10675335, PubMed:23001180, PubMed:27796307, PubMed:23932781, PubMed:26867678, PubMed:29174768). Inhibits cell-cycle progression and counteracts the mitogenic activity of the adenoviral oncoprotein E1A (PubMed:8684459). Acts as a circadian transcriptional coactivator which enhances the activity of the circadian transcriptional activators: NPAS2-ARNTL/BMAL1 and CLOCK-ARNTL/BMAL1 heterodimers (PubMed:14645221). Involved in heart and limb development by mediating acetylation of TBX5, acetylation regulating nucleocytoplasmic shuttling of TBX5 (PubMed:29174768). Acts as a negative regulator of centrosome amplification by mediating acetylation of PLK4 (PubMed:27796307). Acetylates RRP9/U3-55K, a core subunit of the U3 snoRNP complex, impairing pre-rRNA processing (PubMed:26867678). Acetylates MAPRE1/EB1, promoting dynamic kinetochore-microtubule interactions in early mitosis (PubMed:23001180). Also acetylates spermidine (PubMed:27389534).FUNCTION (Microbial infection) In case of HIV-1 infection, it is recruited by the viral protein Tat. Regulates Tat's transactivating activity and may help inducing chromatin remodeling of proviral genes.ACTIVITY REGULATION Activated in vitro by very low concentrations of spermidine, but inhibited at spermidine concentrations higher than 4 uM. The activating effect of low spermidine concentrations may be mediated by N(8)-acetylspermidine produced by KAT2B/P/CAF itself acting as a positive feedback loop.SUBUNIT Interacts with SIRT1. Interacts (unsumoylated form) with NR2C1; the interaction promotes transactivation activity (By similarity). Interacts with EP300, CREBBP and DDX17. Interacts with NCOA1 and NCOA3. Component of a large chromatin remodeling complex, at least composed of MYSM1, KAT2B/PCAF, RBM10 and KIF11/TRIP5. Interacts with NR2C2 (hypophosphorylated and unsumoylated form); the interaction promotes the transactivation activity of NR2C2. Interacts with KLF1; the interaction does not acetylate KLF1 and there is no enhancement of its transactivational activity. Interacts with NFE4. Interacts with MECOM. Interacts with E2F1; the interaction acetylates E2F1 augmenting its DNA-binding and transcriptional activity. Interacts with NPAS2, ARNTL/BMAL1 and CLOCK. Interacts with BCAS3. Interacts with CEBPB (PubMed:17301242). Interacts with NR4A3 (By similarity). Interacts with NFATC2 (By similarity). Interacts with TBX5 (PubMed:29174768). Interacts with PLK4 (PubMed:27796307). Interacts with RB1; this interaction leads to RB1 acetylation (By similarity).SUBUNIT (Microbial infection) Interacts with and acetylates HIV-1 Tat.SUBUNIT (Microbial infection) Interacts with HTLV-1 Tax.TISSUE SPECIFICITY Ubiquitously expressed but most abundant in heart and skeletal muscle. Also expressed in the skin, in keratinocytes (at protein level) (PubMed:20940255).DEVELOPMENTAL STAGE Up-regulated during keratinocyte differentiation (at protein level).DOMAIN (Microbial infection) The bromodomain mediates binding to HIV-1 Tat.DISEASE Defects in KAT2B has been found in a patient with isolated coloboma, a defect of the eye characterized by the absence of ocular structures due to abnormal morphogenesis of the optic cup and stalk, and the fusion of the fetal fissure (optic fissure). Isolated colobomas may be associated with an abnormally small eye (microphthalmia) or small cornea.SIMILARITY Belongs to the acetyltransferase family. GCN5 subfamily. UniProt Q92831 1 EQUAL 832 EQUAL Reactome Database ID Release 82 352430 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=352430 Reactome R-HSA-352430 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-352430.1 GCN5 KAT2A Histone acetyltransferase KAT2A KAT2A_HUMAN Reactome DB_ID: 3006516 UniProt:Q92830 KAT2A KAT2A GCN5 GCN5L2 FUNCTION Protein lysine acyltransferase that can act as a acetyltransferase, glutaryltransferase or succinyltransferase, depending on the context (PubMed:29211711). Acts as a histone lysine succinyltransferase: catalyzes succinylation of histone H3 on 'Lys-79' (H3K79succ), with a maximum frequency around the transcription start sites of genes (PubMed:29211711). Succinylation of histones gives a specific tag for epigenetic transcription activation (PubMed:29211711). Association with the 2-oxoglutarate dehydrogenase complex, which provides succinyl-CoA, is required for histone succinylation (PubMed:29211711). In different complexes, functions either as an acetyltransferase (HAT) or as a succinyltransferase: in the SAGA and ATAC complexes, acts as a histone acetyltransferase (PubMed:17301242, PubMed:19103755, PubMed:29211711). Has significant histone acetyltransferase activity with core histones, but not with nucleosome core particles (PubMed:17301242, PubMed:19103755). Acetylation of histones gives a specific tag for epigenetic transcription activation (PubMed:17301242, PubMed:19103755, PubMed:29211711). Recruited by the XPC complex at promoters, where it specifically mediates acetylation of histone variant H2A.Z.1/H2A.Z, thereby promoting expression of target genes (PubMed:29973595, PubMed:31527837). Involved in long-term memory consolidation and synaptic plasticity: acts by promoting expression of a hippocampal gene expression network linked to neuroactive receptor signaling (By similarity). Acts as a positive regulator of T-cell activation: upon TCR stimulation, recruited to the IL2 promoter following interaction with NFATC2 and catalyzes acetylation of histone H3 at 'Lys-9' (H3K9ac), leading to promote IL2 expression (By similarity). Required for growth and differentiation of craniofacial cartilage and bone by regulating acetylation of histone H3 at 'Lys-9' (H3K9ac) (By similarity). Regulates embryonic stem cell (ESC) pluripotency and differentiation (By similarity). Also acetylates non-histone proteins, such as CEBPB, PPARGC1A, PLK4 and TBX5 (PubMed:17301242, PubMed:16753578, PubMed:27796307, PubMed:29174768). Involved in heart and limb development by mediating acetylation of TBX5, acetylation regulating nucleocytoplasmic shuttling of TBX5 (PubMed:29174768). Acts as a negative regulator of centrosome amplification by mediating acetylation of PLK4 (PubMed:27796307). Acts as a negative regulator of gluconeogenesis by mediating acetylation and subsequent inactivation of PPARGC1A (PubMed:16753578, PubMed:23142079). Also acts as a histone glutaryltransferase: catalyzes glutarylation of histone H4 on 'Lys-91' (H4K91glu), a mark that destabilizes nucleosomes by promoting dissociation of the H2A-H2B dimers from nucleosomes (PubMed:31542297).FUNCTION (Microbial infection) In case of HIV-1 infection, it is recruited by the viral protein Tat. Regulates Tat's transactivating activity and may help inducing chromatin remodeling of proviral genes.SUBUNIT Homooligomer; may form a tetramer of homodimers (PubMed:30109122). Interacts with EP300, CREBBP and ADA2. Component of the TFTC-HAT complex, at least composed of TAF5L, TAF6L, TAF3, TADA3L, SUPT3H/SPT3, TAF2/TAFII150, TAF4/TAFII135, TAF5/TAFII100, KAT2A/GCN5L2, TAF10 and TRRAP (PubMed:10373431, PubMed:10611234, PubMed:11438666). Component of the STAGA transcription coactivator-HAT complex, at least composed of SUPT3H, KAT2A, SUPT7L, TAF5L, TAF6L, TADA3L, TAD1L, TAF10, TAF12, TRRAP and TAF9 (PubMed:18206972). The STAGA core complex is associated with a subcomplex required for histone deubiquitination composed of ATXN7L3, ENY2 and USP22 (PubMed:18206972). Component of the ADA2A-containing complex (ATAC), composed of KAT14, KAT2A, TADA2L, TADA3L, ZZ3, MBIP, WDR5, YEATS2, CCDC101 and DR1 (PubMed:19103755). In the complex, it probably interacts directly with KAT14, MBIP and WDR5 (PubMed:19103755). Interacts with PML (By similarity). Interacts with CEBPB (PubMed:17301242). Interacts with TACC1, TACC2 and TACC3 (PubMed:14767476). Interacts with RELA (By similarity). Interacts with NFATC2 (By similarity). Interacts with TBX5 (PubMed:29174768). Interacts with PLK4 (PubMed:27796307). Associates with the 2-oxoglutarate dehydrogenase complex (PubMed:29211711). Interacts with XPC; leading to KAT2A recruitment to promoters and subsequent acetylation of histones (PubMed:29973595, PubMed:31527837). Interacts with ERCC3/XPB; leading to KAT2A recruitment to promoters and subsequent acetylation of histones (PubMed:30894545).SUBUNIT (Microbial infection) Interacts with and acetylates HIV-1 Tat.TISSUE SPECIFICITY Expressed in all tissues tested.DOMAIN Loop3 is required for substrate specificity and adopts different structural conformations in succinyl-CoA-bound and acetyl-CoA-bound forms. Tyr-645 has an important role in the selective binding of succinyl-CoA over acetyl-CoA.PTM Acetylated at Lys-549, inhibiting the protein acetyltransferase activity (PubMed:23142079). Deacetylation at Lys-549 by SIRT6 promotes phosphorylation at Ser-307 and Thr-735 and subsequent activation of the protein acetyltransferase activity, leading to acetylation and inactivation of PPARGC1A (PubMed:23142079).SIMILARITY Belongs to the acetyltransferase family. GCN5 subfamily.CAUTION According to a report, has weak protein acyltransferase activity compared to protein acetyltransferase activity (PubMed:27377381). These conclusions are however not supported by subsequent studies (PubMed:29211711, PubMed:31542297). UniProt Q92830 1 EQUAL 837 EQUAL Reactome Database ID Release 82 3006516 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=3006516 Reactome R-HSA-3006516 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-3006516.1 Reactome Database ID Release 82 350078 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=350078 Reactome R-HSA-350078 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-350078.1 1 p300 EP300 Histone acetyltransferase p300 EP300_HUMAN KAT3B Reactome DB_ID: 381325 UniProt:Q09472 EP300 EP300 P300 FUNCTION Functions as histone acetyltransferase and regulates transcription via chromatin remodeling (PubMed:23415232, PubMed:23934153, PubMed:8945521). Acetylates all four core histones in nucleosomes. Histone acetylation gives an epigenetic tag for transcriptional activation (PubMed:23415232, PubMed:23934153, PubMed:8945521). Mediates cAMP-gene regulation by binding specifically to phosphorylated CREB protein. Mediates acetylation of histone H3 at 'Lys-122' (H3K122ac), a modification that localizes at the surface of the histone octamer and stimulates transcription, possibly by promoting nucleosome instability. Mediates acetylation of histone H3 at 'Lys-27' (H3K27ac) (PubMed:23911289). Also functions as acetyltransferase for non-histone targets, such as ALX1, HDAC1, PRMT1 or SIRT2 (PubMed:12929931, PubMed:16762839, PubMed:18722353). Acetylates 'Lys-131' of ALX1 and acts as its coactivator (PubMed:12929931). Acetylates SIRT2 and is proposed to indirectly increase the transcriptional activity of p53/TP53 through acetylation and subsequent attenuation of SIRT2 deacetylase function (PubMed:18722353). Following DNA damage, forms a stress-responsive p53/TP53 coactivator complex with JMY which mediates p53/TP53 acetylation, thereby increasing p53/TP53-dependent transcription and apoptosis (PubMed:11511361, PubMed:15448695). Promotes chromatin acetylation in heat shock responsive HSP genes during the heat shock response (HSR), thereby stimulating HSR transcription (PubMed:18451878). Acetylates HDAC1 leading to its inactivation and modulation of transcription (PubMed:16762839). Acetylates 'Lys-247' of EGR2 (By similarity). Acts as a TFAP2A-mediated transcriptional coactivator in presence of CITED2 (PubMed:12586840). Plays a role as a coactivator of NEUROD1-dependent transcription of the secretin and p21 genes and controls terminal differentiation of cells in the intestinal epithelium. Promotes cardiac myocyte enlargement. Can also mediate transcriptional repression. Acetylates FOXO1 and enhances its transcriptional activity (PubMed:15890677). Acetylates BCL6 wich disrupts its ability to recruit histone deacetylases and hinders its transcriptional repressor activity (PubMed:12402037). Participates in CLOCK or NPAS2-regulated rhythmic gene transcription; exhibits a circadian association with CLOCK or NPAS2, correlating with increase in PER1/2 mRNA and histone H3 acetylation on the PER1/2 promoter (PubMed:14645221). Acetylates MTA1 at 'Lys-626' which is essential for its transcriptional coactivator activity (PubMed:16617102). Acetylates XBP1 isoform 2; acetylation increases protein stability of XBP1 isoform 2 and enhances its transcriptional activity (PubMed:20955178). Acetylates PCNA; acetylation promotes removal of chromatin-bound PCNA and its degradation during nucleotide excision repair (NER) (PubMed:24939902). Acetylates MEF2D (PubMed:21030595). Acetylates and stabilizes ZBTB7B protein by antagonizing ubiquitin conjugation and degradation, this mechanism may be involved in CD4/CD8 lineage differentiation (PubMed:20810990). Acetylates GABPB1, impairing GABPB1 heterotetramerization and activity (By similarity). Acetylates PCK1 and promotes PCK1 anaplerotic activity (PubMed:30193097). Acetylates RXRA and RXRG (PubMed:17761950). Acetylates isoform M2 of PKM (PKM2), promoting its homodimerization and conversion into a protein kinase (PubMed:24120661). In addition to protein acetyltransferase, can use different acyl-CoA substrates, such as (2E)-butenoyl-CoA (crotonyl-CoA), butanoyl-CoA (butyryl-CoA), 2-hydroxyisobutanoyl-CoA (2-hydroxyisobutyryl-CoA), lactoyl-CoA or propanoyl-CoA (propionyl-CoA), and is able to mediate protein crotonylation, butyrylation, 2-hydroxyisobutyrylation, lactylation or propionylation, respectively (PubMed:17267393, PubMed:25818647, PubMed:29775581, PubMed:31645732). Acts as a histone crotonyltransferase; crotonylation marks active promoters and enhancers and confers resistance to transcriptional repressors (PubMed:25818647). Histone crotonyltransferase activity is dependent on the concentration of (2E)-butenoyl-CoA (crotonyl-CoA) substrate and such activity is weak when (2E)-butenoyl-CoA (crotonyl-CoA) concentration is low (PubMed:25818647). Also acts as a histone butyryltransferase; butyrylation marks active promoters (PubMed:17267393). Catalyzes histone lactylation in macrophages by using lactoyl-CoA directly derived from endogenous or exogenous lactate, leading to stimulates gene transcription (PubMed:31645732). Acts as a protein-lysine 2-hydroxyisobutyryltransferase; regulates glycolysis by mediating 2-hydroxyisobutyrylation of glycolytic enzymes (PubMed:29775581). Functions as a transcriptional coactivator for SMAD4 in the TGF-beta signaling pathway (PubMed:25514493).FUNCTION (Microbial infection) In case of HIV-1 infection, it is recruited by the viral protein Tat. Regulates Tat's transactivating activity and may help inducing chromatin remodeling of proviral genes. Binds to and may be involved in the transforming capacity of the adenovirus E1A protein.SUBUNIT Interacts with HIF1A; the interaction is stimulated in response to hypoxia and inhibited by CITED2 (PubMed:9887100, PubMed:11959990). Probably part of a complex with HIF1A and CREBBP (PubMed:8917528). Interacts (via N-terminus) with TFAP2A (via N-terminus); the interaction requires CITED2 (PubMed:12586840). Interacts (via CH1 domain) with CITED2 (via C-terminus) (PubMed:12586840, PubMed:12778114). Interacts with CITED1 (unphosphorylated form preferentially and via C-terminus) (PubMed:10722728, PubMed:16864582). Interacts with ESR1; the interaction is estrogen-dependent and enhanced by CITED1 (PubMed:11581164). Interacts with HIPK2 (By similarity). Interacts with DTX1, EID1, ELF3, FEN1, LEF1, NCOA1, NCOA6, NR3C1, PCAF, PELP1, PRDM6, SP1, SP3, SPIB, SRY, TCF7L2, DDX5, DDX17, SATB1, SRCAP and TRERF1 (PubMed:11073989, PubMed:11073990, PubMed:10823961, PubMed:11349124, PubMed:11430825, PubMed:11481323, PubMed:11564735, PubMed:11581372, PubMed:11864910, PubMed:12446687, PubMed:12527917, PubMed:12837748, PubMed:14605447, PubMed:15075319, PubMed:15297880, PubMed:16478997, PubMed:8684459, PubMed:17226766, PubMed:9590696). Interacts with JMY, the complex activates p53/TP53 transcriptional activity (PubMed:10518217, PubMed:11511361). Interacts with TTC5/STRAP; the interaction facilitates the association between JMY and p300/EP300 cofactors (PubMed:11511361). Interacts with p53/TP53; the interation is facilitated by TTC5/STRAP (PubMed:15186775, PubMed:15448695, PubMed:19217391). Forms a complex with TTC5/STRAP and HSF1; these interactions augment chromatin-bound HSF1 and p300/EP300 histone acetyltransferase activity (PubMed:18451878). Part of a complex containing CARM1 and NCOA2/GRIP1 (PubMed:11701890, PubMed:11997499, PubMed:15731352). Interacts with ING4 and this interaction may be indirect (PubMed:12750254). Interacts with ING5 (PubMed:12750254). Interacts with the C-terminal region of CITED4 (PubMed:11744733). Non-sumoylated EP300 preferentially interacts with SENP3 (PubMed:19680224). Interacts with SS18L1/CREST (PubMed:14716005). Interacts with ALX1 (via homeobox domain) (PubMed:12929931). Interacts with NEUROD1; the interaction is inhibited by NR0B2 (PubMed:14752053). Interacts with TCF3 (PubMed:14752053). Interacts (via CREB-binding domain) with MYOCD (via C-terminus) (By similarity). Interacts with ROCK2 and PPARG (PubMed:11518699, PubMed:16574662). Forms a complex made of CDK9, CCNT1/cyclin-T1, EP300 and GATA4 that stimulates hypertrophy in cardiomyocytes (PubMed:20081228). Interacts with IRF1 and this interaction enhances acetylation of p53/TP53 and stimulation of its activity (PubMed:15509808). Interacts with FOXO1; the interaction acetylates FOXO1 and enhances its transcriptional activity (PubMed:15890677). Interacts with ALKBH4 and DDIT3/CHOP (PubMed:17872950, PubMed:23145062). Interacts with KLF15 (PubMed:23999430). Interacts with CEBPB and RORA (PubMed:9862959). Interacts with NPAS2, ARNTL/BMAL1 and CLOCK (PubMed:14645221). Interacts with SIRT2 isoform 1, isoform 2 and isoform 5 (PubMed:24177535). Interacts with MTA1 (PubMed:16617102). Interacts with HDAC4 and HDAC5 in the presence of TFAP2C (PubMed:24413532). Interacts with TRIP4 (PubMed:25219498). Directly interacts with ZBTB49; this interaction leads to synergistic transactivation of CDKN1A (PubMed:25245946). Interacts with NR4A3 (By similarity). Interacts with ZNF451 (PubMed:24324267). Interacts with ATF5; EP300 is required for ATF5 and CEBPB interaction and DNA binding (By similarity). Interacts with HSF1 (PubMed:27189267). Interacts with ZBTB48/TZAP (PubMed:24382891). Interacts with STAT1; the interaction is enhanced upon IFN-gamma stimulation (PubMed:26479788). Interacts with HNRNPU (via C-terminus); this interaction enhances DNA-binding of HNRNPU to nuclear scaffold/matrix attachment region (S/MAR) elements (PubMed:11909954). Interacts with BCL11B (PubMed:27959755, PubMed:16809611). Interacts with SMAD4; negatively regulated by ZBTB7A (PubMed:25514493). Interacts with DUX4 (via C-terminus) (PubMed:26951377). Interacts with NUPR1; this interaction enhances the effect of EP300 on PAX2 transcription factor activity (PubMed:11940591). Interacts with RXRA; the interaction is decreased by 9-cis retinoic acid (PubMed:17761950). NR4A1 competes with EP300 for interaction with RXRA and thereby attenuates EP300 mediated acetylation of RXRA (PubMed:17761950). Interacts with RB1 (By similarity). Interacts with DDX3X; this interaction may facilitate HNF4A acetylation (PubMed:28128295). Interacts with SOX9 (PubMed:12732631). Interacts with ATF4; EP300/p300 stabilizes ATF4 and increases its transcriptional activity independently of its catalytic activity by preventing its ubiquitination (PubMed:16219772). Interacts with KAT5; promoting KAT5 autoacetylation (PubMed:24835996).SUBUNIT (Microbial infection) Interacts with human adenovirus 5 E1A protein; this interaction stimulates the acetylation of RB1 by recruiting EP300 and RB1 into a multimeric-protein complex.SUBUNIT (Microbial infection) Interacts with and acetylates HIV-1 Tat.SUBUNIT (Microbial infection) Interacts with HTLV-1 proteins Tax, p30II and HBZ.DOMAIN The CRD1 domain (cell cycle regulatory domain 1) mediates transcriptional repression of a subset of p300 responsive genes; it can be de-repressed by CDKN1A/p21WAF1 at least at some promoters. It conatins sumoylation and acetylation sites and the same lysine residues may be targeted for the respective modifications. It is proposed that deacetylation by SIRT1 allows sumoylation leading to suppressed activity.PTM Acetylated on Lys at up to 17 positions by intermolecular autocatalysis. Deacetylated in the transcriptional repression domain (CRD1) by SIRT1, preferentially at Lys-1020. Deacetylated by SIRT2, preferentially at Lys-418, Lys-423, Lys-1542, Lys-1546, Lys-1549, Lys-1699, Lys-1704 and Lys-1707.PTM Citrullinated at Arg-2142 by PADI4, which impairs methylation by CARM1 and promotes interaction with NCOA2/GRIP1.PTM Methylated at Arg-580 and Arg-604 in the KIX domain by CARM1, which blocks association with CREB, inhibits CREB signaling and activates apoptotic response. Also methylated at Arg-2142 by CARM1, which impairs interaction with NCOA2/GRIP1.PTM Sumoylated; sumoylation in the transcriptional repression domain (CRD1) mediates transcriptional repression. Desumoylated by SENP3 through the removal of SUMO2 and SUMO3.PTM Probable target of ubiquitination by FBXO3, leading to rapid proteasome-dependent degradation.PTM Phosphorylated by HIPK2 in a RUNX1-dependent manner. This phosphorylation that activates EP300 happens when RUNX1 is associated with DNA and CBFB. Phosphorylated by ROCK2 and this enhances its activity. Phosphorylation at Ser-89 by AMPK reduces interaction with nuclear receptors, such as PPARG.DISEASE Defects in EP300 may play a role in epithelial cancer.DISEASE Chromosomal aberrations involving EP300 may be a cause of acute myeloid leukemias. Translocation t(8;22)(p11;q13) with KAT6A. UniProt Q09472 2 EQUAL 2414 EQUAL Reactome Database ID Release 82 381325 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=381325 Reactome R-HSA-381325 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-381325.1 1 xNICD1:RBPJ:SNW1 Reactome DB_ID: 2064909 RBPJ Recombining binding protein suppressor of hairless SUH_HUMAN CBF1 Reactome DB_ID: 3008668 UniProt:Q06330 RBPJ RBPJ IGKJRB IGKJRB1 RBPJK RBPSUH FUNCTION Transcriptional regulator that plays a central role in Notch signaling, a signaling pathway involved in cell-cell communication that regulates a broad spectrum of cell-fate determinations. Acts as a transcriptional repressor when it is not associated with Notch proteins. When associated with some NICD product of Notch proteins (Notch intracellular domain), it acts as a transcriptional activator that activates transcription of Notch target genes. Probably represses or activates transcription via the recruitment of chromatin remodeling complexes containing histone deacetylase or histone acetylase proteins, respectively. Specifically binds to the immunoglobulin kappa-type J segment recombination signal sequence. Binds specifically to methylated DNA (PubMed:21991380). Binds to the oxygen responsive element of COX4I2 and activates its transcription under hypoxia conditions (4% oxygen) (PubMed:23303788). Negatively regulates the phagocyte oxidative burst in response to bacterial infection by repressing transcription of NADPH oxidase subunits (By similarity).SUBUNIT Interacts with activated NOTCH1, NOTCH2 or NOTCH3. Interacts with MINT/SHARP. This interaction may mediate the recruitment of large corepressor complexes containing proteins such as HDAC1, HDAC2, NCOR2, SAP30, FHL1/KYOT2 and CIR1. Interacts with EP300, MAML1 and PTF1A. Interacts with Epstein-Barr virus EBNA2, EBNA3, EBNA4 and EBNA6. Interacts with RITA1/C12orf52, leading to nuclear export, prevent the interaction between RBPJ and NICD product and subsequent down-regulation of the Notch signaling pathway. Interacts with SNW1. Interacts with CHCHD2 and CXXC5 (PubMed:23303788). Interacts with BEND6 (via BEN domain). Interacts with NKAPL (By similarity). Interacts with ZMIZ1. Interacts with RBM15 (By similarity).SIMILARITY Belongs to the Su(H) family.CAUTION Despite some similarity with the 'phage' integrase family, it has no recombinase activity. UniProt Q06330 1 EQUAL 500 EQUAL Reactome Database ID Release 82 3008668 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=3008668 Reactome R-HSA-3008668 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-3008668.1 1 SNW1 SKIP SNW domain-containing protein SNW1_HUMAN Reactome DB_ID: 351663 UniProt:Q13573 SNW1 SNW1 SKIIP SKIP FUNCTION Involved in pre-mRNA splicing as component of the spliceosome (PubMed:11991638, PubMed:28502770, PubMed:28076346). Is required in the specific splicing of CDKN1A pre-mRNA; the function probably involves the recruitment of U2AF2 to the mRNA. Is proposed to recruit PPIL1 to the spliceosome. May be involved in cyclin-D1/CCND1 mRNA stability through the SNARP complex which associates with both the 3'end of the CCND1 gene and its mRNA. Involved in transcriptional regulation. Modulates TGF-beta-mediated transcription via association with SMAD proteins, MYOD1-mediated transcription via association with PABPN1, RB1-mediated transcriptional repression, and retinoid-X receptor (RXR)- and vitamin D receptor (VDR)-dependent gene transcription in a cell line-specific manner probably involving coactivators NCOA1 and GRIP1. Is involved in NOTCH1-mediated transcriptional activation. Binds to multimerized forms of Notch intracellular domain (NICD) and is proposed to recruit transcriptional coactivators such as MAML1 to form an intermediate preactivation complex which associates with DNA-bound CBF-1/RBPJ to form a transcriptional activation complex by releasing SNW1 and redundant NOTCH1 NICD.FUNCTION (Microbial infection) Is recruited by HIV-1 Tat to Tat:P-TEFb:TAR RNA complexes and is involved in Tat transcription by recruitment of MYC, MEN1 and TRRAP to the HIV promoter.FUNCTION (Microbial infection) Proposed to be involved in transcriptional activation by EBV EBNA2 of CBF-1/RBPJ-repressed promoters.SUBUNIT Identified in the spliceosome C complex (PubMed:11991638, PubMed:28502770, PubMed:28076346). Associates with U4/U6-U5 tri-small nuclear ribonucleoproteins (U4/U6-U5 tri-snRNPs). Interacts with SKI, SMAD2,SMAD3, RBPJ, RB1, PABPN1, MAGEA1, SIRT1, FOXN3, U2AF2, DAXX and ATP1B4. Interacts with PPIL1 (PubMed:16595688, PubMed:20007319, PubMed:20368803, PubMed:33220177). Interacts with VDR and RXRA; preferentially associates with VDR:RXRA heterodimers (PubMed:9632709, PubMed:12529369). Interacts with NCOR2 (PubMed:10644367). Interacts with MAML1 (PubMed:21245387). Interacts with NOTCH1 NICD; the interaction involves multimerized NOTCH1 NICD (PubMed:21245387). Forms a complex with NOTCH1 NICD and MAML1; the association is dissociated by RBPJ (PubMed:21245387). Associates with positive transcription elongation factor b (P-TEFb) (PubMed:15905409). Component of the SNARP complex which consists at least of SNIP1, SNW1, THRAP3, BCLAF1 and PNN (PubMed:18794151).SUBUNIT (Microbial infection) Interacts with human papillomavirus type-16 (HPV16) E7 protein.SUBUNIT (Microbial infection) Interacts with EBV EBNA2; EBNA2 competes with NCOR2 for interaction with SNW1.SIMILARITY Belongs to the SNW family. UniProt Q13573 2 EQUAL 536 EQUAL Reactome Database ID Release 82 351663 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=351663 Reactome R-HSA-351663 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-351663.1 1 xNICD1 notch1 intracellular domain Reactome DB_ID: 2064902 UniProt:P21783 notch1 notch1 xotch FUNCTION Functions as a receptor for membrane-bound ligands Jagged-1 (JAG1), Jagged-2 (JAG2) and Delta-1 (DLL1) to regulate cell-fate determination. Upon ligand activation through the released notch intracellular domain (NICD) it forms a transcriptional activator complex with RBPJ/RBPSUH and activates genes of the enhancer of split locus. Affects the implementation of differentiation, proliferation and apoptotic programs. Involved in angiogenesis; negatively regulates endothelial cell proliferation and migration and angiogenic sprouting. Involved in the maturation of both CD4(+) and CD8(+) cells in the thymus. Important for follicular differentiation and possibly cell fate selection within the follicle. During cerebellar development, functions as a receptor for neuronal DNER and is involved in the differentiation of Bergmann glia. Represses neuronal and myogenic differentiation. May play an essential role in postimplantation development, probably in some aspect of cell specification and/or differentiation. May be involved in mesoderm development, somite formation and neurogenesis. Involved in determination of left/right symmetry by modulating the balance between motile and immotile (sensory) cilia at the left-right organiser (LRO) (By similarity).SUBUNIT Forms a ternary complex with nrarp and rbpj/suh.DEVELOPMENTAL STAGE Expressed almost uniformly in early embryos.PTM O-glycosylated on the EGF-like domains. Contains both O-linked fucose and O-linked glucose. O-linked glycosylation by galnt11 is involved in determination of left/right symmetry: glycosylation promotes activation of notch1, possibly by promoting cleavage by adam17, modulating the balance between motile and immotile (sensory) cilia at the left-right organiser (LRO) (By similarity).PTM Synthesized in the endoplasmic reticulum as an inactive form which is proteolytically cleaved by a furin-like convertase in the trans-Golgi network before it reaches the plasma membrane to yield an active, ligand-accessible form. Cleavage results in a C-terminal fragment N(TM) and a N-terminal fragment N(EC). Following ligand binding, it is cleaved by adam17 to yield a membrane-associated intermediate fragment called notch extracellular truncation (NEXT). Following endocytosis, this fragment is then cleaved by presenilin dependent gamma-secretase to release a Notch-derived peptide containing the intracellular domain (NICD) from the membrane (By similarity).SIMILARITY Belongs to the NOTCH family. Xenopus laevis NCBI Taxonomy 8355 UniProt P21783 1748 EQUAL 2524 EQUAL Reactome Database ID Release 82 2064902 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=2064902 Reactome R-XLA-2064902 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-XLA-2064902.1 1 Reactome Database ID Release 82 2064909 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=2064909 Reactome R-NUL-2064909 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-NUL-2064909.1 1 Reactome Database ID Release 82 2064911 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=2064911 Reactome R-NUL-2064911 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-NUL-2064911.1 xNOTCH1 Chimeric Coactivator Complex:CDK8:CCNC Reactome DB_ID: 2064914 1 1 Reactome Database ID Release 82 2064914 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=2064914 Reactome R-NUL-2064914 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-NUL-2064914.1 Reactome Database ID Release 82 2064916 Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=2064916 Reactome R-NUL-2064916 1 Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-NUL-2064916.1 15546612 Pubmed 2004 Mastermind recruits CycC:CDK8 to phosphorylate the Notch ICD and coordinate activation with turnover Fryer, CJ White, JB Jones, KA Mol Cell 16:509-20