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Protein Page:
p300 (human)
p Phosphorylation
a Acetylation
m Methylation
m1 Mono-methylation
m2 Di-methylation
m3 Tri-methylation
u Ubiquitination
s Sumoylation
n Neddylation
gl O-GlcNAc
ga O-GalNAc
h Palmitoylation
ad Adenylylation
sn S-Nitrosylation
ca Caspase cleavage

Overview
p300 a histone acetyltransferase and transcriptional co-activator that regulates transcription via chromatin remodeling. Acetylates all four core histones in nucleosomes. Related to CPB (CREB-binding protein), and like CPB can stimulate transcription through activation of CREB. Specifically inhibited by the adenovirus oncoprotein E1A. A co-activator of HIF1A (hypoxia-inducible factor 1 alpha), and thus plays a role in the stimulation of hypoxia-induced genes such as VEGF. Mediates cAMP-gene regulation by binding specifically to phosphorylated CREB protein. Methylated at R580 and R604 in the KIX domain by CARM1, which blocks association with CREB, inhibits CREB signaling and activates the apoptotic response. Also methylated at R2142 by CARM1, which impairs interaction with NCoA2. Note: This description may include information from UniProtKB.
Protein type: Acetyltransferase; Transcription, coactivator/corepressor; EC 2.3.1.48; Motility/polarity/chemotaxis; Nuclear receptor co-regulator
Cellular Component: nucleoplasm; transcription factor complex; cytoplasm; nucleolus; nucleus; chromatin; histone acetyltransferase complex
Molecular Function: lysine N-acetyltransferase activity; peroxisome proliferator activated receptor binding; transcription activator binding; zinc ion binding; p53 binding; chromatin DNA binding; transcription coactivator activity; beta-catenin binding; antigen binding; transcription factor binding; NF-kappaB binding; protein binding; histone acetyltransferase activity; androgen receptor binding; DNA binding; acetyltransferase activity; transferase activity, transferring acyl groups; protein complex binding; bHLH transcription factor binding; mitogen-activated protein kinase binding; chromatin binding; SMAD binding; glucocorticoid receptor binding
Biological Process: establishment and/or maintenance of chromatin architecture; positive regulation of translation; positive regulation of protein binding; viral reproduction; positive regulation of cell size; regulation of cell cycle; apoptosis; positive regulation of proteolysis; positive regulation of axon extension; heart development; response to glucocorticoid stimulus; positive regulation of collagen biosynthetic process; regulation of angiotensin metabolic process; negative regulation of transcription from RNA polymerase II promoter; regulation of transcription, DNA-dependent; response to glucose stimulus; protein kinase B signaling cascade; positive regulation of interferon type I production; G2/M transition of mitotic cell cycle; DNA damage response, signal transduction by p53 class mediator resulting in induction of apoptosis; positive regulation of DNA binding; response to drug; nervous system development; skeletal muscle development; somitogenesis; Notch signaling pathway; response to retinoic acid; internal peptidyl-lysine acetylation; transcription, DNA-dependent; positive regulation of protein import into nucleus, translocation; liver development; protein-DNA complex assembly; organ morphogenesis; response to ethanol; gut development; positive regulation of protein secretion; response to estrogen stimulus; response to cobalt ion; response to hypoxia; innate immune response; positive regulation of transcription factor activity; positive regulation of transcription from RNA polymerase II promoter; mitotic cell cycle; positive regulation of protein amino acid phosphorylation; response to calcium ion; lung development; N-terminal peptidyl-lysine acetylation
Reference #:  Q09472 (UniProtKB)
Alt. Names/Synonyms: E1A binding protein p300; E1A-associated protein p300; E1A-binding protein, 300kD; EP300; Histone acetyltransferase p300; KAT3B; P300; p300 HAT
Gene Symbols: EP300
Molecular weight: 264,161 Da
Basal Isoelectric point: 8.81  Predict pI for various phosphorylation states
CST Pathways:  Angiogenesis  |  Crosstalk between PTMs  |  G2/M DNA Damage Checkpoint  |  NF-kB Signaling  |  Protein Acetylation
Select Structure to View Below

p300

Protein Structure Not Found.


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Sites Implicated In
transcription, altered: S2279‑p, S2315‑p, S2366‑p
transcription, induced: S89‑p, S1834‑p
transcription, inhibited: S89‑p
acetylation: S106‑p
enzymatic activity, induced: S106‑p, S2279‑p, S2315‑p, S2366‑p
enzymatic activity, inhibited: S89‑p
molecular association, regulation: S89‑p, S106‑p, S1834‑p, S2279‑p, S2315‑p, S2366‑p
protein stabilization: S106‑p

Modification Sites and Domains Show Modification Legend
Click here to view phosphorylation modifications only

Modification Sites in Parent Protein, Orthologs, and Isoforms Show Modification Legend
 

Show Multiple Sequence Alignment


 SS 

SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.


 MS 

MS: The number of records in which this modification site was assigned using ONLY proteomic discovery-mode mass spectrometry.


       human

 
1 0 S12-p VVEPGPPsAKRPKLS
1 0 K77-a MVQDAASkHkQLSEL
1 0 K79-a QDAASkHkQLSELLR
8 1 S89-p SELLRSGsSPNLNMG
2 0 S106-p GPGQVMAsQAQQSSP
0 1 S112 AsQAQQSSPGLGLIN
0 1 G116 QQSSPGLGLINSMVK
0 1 S120 PGLGLINSMVKSPMT
0 10 S285-p TVLSNNLsPFAMDkk
1 18 K291-a LsPFAMDkkAVPGGG
1 2 K292-a sPFAMDkkAVPGGGM
1 0 T317-p VQQPGLVtPVAQGMG
1 0 K336-a TADPEKRkLIQQQLV
1 1 K350-a VLLLHAHkCQRREQA
1 4 K373-a LPHCRTMkNVLNHMT
1 4 K386-a MTHCQSGkSCQVAHC
1 0 K404-a RQIISHWkNCTRHDC
1 6 K418-a CPVCLPLkNAGDkRN
1 10 K423-a PLkNAGDkRNQQPIL
2 0 K489-a TQPQVQAkNQQNQQP
0 4 S499 QNQQPGQSPQGMRPM
1 0 K569-a PSTTGIRkQWHEDIT
1 1 K601-a TPDPAALkDRRMENL
0 3 Y611-p RMENLVAyARkVEGD
1 0 K614-a NLVAyARkVEGDMyE
0 2 Y620-p RkVEGDMyESANNRA
0 3 Y629-p SANNRAEyyHLLAEk
0 1 Y630-p ANNRAEyyHLLAEkI
1 6 K636-a yyHLLAEkIYKIQKE
1 0 S831-p QPALHQNsPsPVPSR
1 0 S833-p ALHQNsPsPVPSRtP
1 0 T839-p PsPVPSRtPtPHHtP
1 0 T841-p PVPSRtPtPHHtPPS
1 0 T845-p RtPtPHHtPPSIGAQ
1 0 T885-p LHPPPRQtPtPPTTQ
1 0 T887-p PPPRQtPtPPTTQLP
1 0 T938-p LLPPQPAtPLSQPAV
1 0 K970-a NSQAIAEkQPSQEVk
0 1 K977-a kQPSQEVkMEAkMEV
1 3 K981-a QEVkMEAkMEVDQPE
1 6 K1001-a PEDISESkVEDCKME
2 0 K1020-a EERSTELkTEIkEEE
1 0 K1020-s EERSTELkTEIkEEE
1 0 K1024-a TELkTEIkEEEDQPS
1 0 K1024-s TELkTEIkEEEDQPS
0 3 S1037-p PSTSATQssPAPGQS
1 9 S1038-p STSATQssPAPGQSk
1 0 K1045-a sPAPGQSkkkIFKPE
1 0 K1046-a PAPGQSkkkIFKPEE
1 0 K1047-a APGQSkkkIFKPEEL
1 0 K1094-a PDYFDIVkSPMDLST
0 1 K1103-a PMDLSTIkRkLDTGQ
1 0 K1105-a DLSTIkRkLDTGQYQ
1 0 K1144-a RVYKYCSkLSEVFEQ
1 4 K1167-a LGYCCGRkLEFSPQT
2 67 K1180-a QTLCCYGkQLCTIPR
1 1 K1203-a NRYHFCEkCFNEIQG
1 0 K1228-a QPQTTINkEQFSKRK
0 1 S1295-p FSAKRLPstRLGTFL
0 1 T1296-p SAKRLPstRLGTFLE
1 0 K1331-a RVVHASDkTVEVkPG
3 0 K1336-a SDkTVEVkPGMkARF
1 3 K1340-a VEVkPGMkARFVDSG
0 2 Y1355-p EMAESFPyRTKALFA
0 1 Y1394 PPNQRRVYISYLDSV
0 1 S1396 NQRRVYISYLDSVHF
0 1 Y1397 QRRVYISYLDSVHFF
0 1 S1400 VYISYLDSVHFFRPK
0 2 Y1414-p KCLRTAVyHEILIGy
0 2 Y1421-p yHEILIGyLEyVKkL
0 2 Y1424-p ILIGyLEyVKkLGYT
1 0 K1427-a GyLEyVKkLGYTTGH
2 0 K1473-a WYKKMLDkAVSERIV
5 10 K1499-a EDRLTSAkELPYFEG
1 0 K1518-a NVLEESIkELEQEEE
1 0 K1528-a EQEEEERkREENTSN
6 242 K1542-a NESTDVTkGDSkNAk
6 260 K1546-a DVTkGDSkNAkkkNN
6 208 K1549-a kGDSkNAkkkNNkkT
6 167 K1550-a GDSkNAkkkNNkkTS
5 52 K1551-a DSkNAkkkNNkkTSk
5 190 K1554-a NAkkkNNkkTSkNkS
5 196 K1555-a AkkkNNkkTSkNkSS
5 198 K1558-a kNNkkTSkNkSSLSR
5 105 K1560-a NkkTSkNkSSLSRGN
2 2 K1568-a SSLSRGNkkkPGMPN
2 2 K1569-a SLSRGNkkkPGMPNV
1 1 K1570-a LSRGNkkkPGMPNVS
1 11 K1583-a VSNDLSQkLYATMEk
1 6 K1590-a kLYATMEkHKEVFFV
2 0 K1637-a FLTLARDkHLEFSSL
0 1 K1637-u FLTLARDkHLEFSSL
1 10 K1674-a VYTCNECkHHVETRW
1 0 K1699-a CITCYNTkNHDHkME
1 5 K1704-a NTkNHDHkMEkLGLG
1 0 K1707-a NHDHkMEkLGLGLDD
0 1 S1726-p QQAAATQsPGDSRRL
1 0 S1734 PGDSRRLSIQRCIQS
1 16 K1760-a CSLPSCQkMkRVVQH
1 5 K1762-a LPSCQkMkRVVQHTk
1 12 K1769-a kRVVQHTkGCkRkTN
1 12 K1772-a VQHTkGCkRkTNGGC
1 0 K1774-a HTkGCkRkTNGGCPI
1 1 K1783-a NGGCPICkQLIALCC
1 0 K1794-a ALCCYHAkHCQENkC
1 6 K1800-a AkHCQENkCPVPFCL
1 0 K1810-a VPFCLNIkQkLRQQQ
1 0 K1812-a FCLNIkQkLRQQQLQ
6 0 S1834-p MLRRRMAsMQRTGVV
1 0 T1960-p QHQMPPMtPMAPMGM
1 0 S2039-p GLGQVGIsPLKPGTV
0 2 R2059-m2 QNLLRTLrSPSSPLQ
1 0 K2086-a QLLAAFIkQRAAkYA
1 0 K2091-a FIkQRAAkYANSNPQ
1 0 R2142-m PMQAGVQrAGLPQQQ
0 1 S2271 LLQQQMGSPVQPNPM
3 1 S2279-p PVQPNPMsPQQHMLP
0 1 S2291 MLPNQAQSPHLQGQQ
0 3 S2309-p SLSNQVRsPQPVPsP
2 4 S2315-p RsPQPVPsPRPQsQP
0 2 S2320-p VPsPRPQsQPPHssP
0 2 S2325-p PQsQPPHssPsPRMQ
0 1 S2326-p QsQPPHssPsPRMQP
0 2 S2328-p QPPHssPsPRMQPQP
2 0 S2366-p MEQGHFAsPDQNSML
4771 : Acetyl-CBP (Lys1535)/p300 (Lys1499) Antibody
  mouse

 
S12 VVEPGPPSAKRPKLS
K77 IVQDAASKHKQLSEL
K79 QDAASKHKQLSELLR
S89-p SELLRSGsSPNLNMG
S106 GPGQAMASQAQQNsP
S112-p ASQAQQNsPGLsLIN
S116-p QQNsPGLsLINsMVK
S120-p PGLsLINsMVKSPMA
S286-p TVLPNNLsPFAMDKK
K292 LsPFAMDKKAVPGGG
K293 sPFAMDKKAVPGGGM
T318 VQQPGLVTPVAAGMG
K337 TADPEKRKLIQQQLV
K351 VLLLHAHKCQRREQA
K374 LPHCRTMKNVLNHMT
K387 MTHCQSGKSCQVAHC
K405 RQIISHWKNCTRHDC
K419 CPVCLPLKNAGDKRN
K424 PLKNAGDKRNQQSIL
K490 PQPQVQAKNQQSQPS
S500-p QSQPSGQsPQGMRSV
K570 PSSTGIRKQWHEDIT
K602 TPDPAALKDRRMENL
Y612-p RMENLVAyARKVEGD
K615 NLVAyARKVEGDMYE
Y621 RKVEGDMYESANNRA
Y630 SANNRAEYYHLLAEK
Y631 ANNRAEYYHLLAEKI
K637 YYHLLAEKIYKIQKE
S831 PQQAHQNSPSPVPSR
S833 QAHQNSPSPVPSRTP
T839 PSPVPSRTPTPHHTP
T841 PVPSRTPTPHHTPPS
T845 RTPTPHHTPPSIGNQ
T885 LHPSSRQTPtPPTHL
T887-p PSSRQTPtPPTHLPP
T937 LLPPQPSTPLSQPAV
K969 NSQTIPEKQPSQEVK
K976 KQPSQEVKMESKMEV
K980 QEVKMESKMEVDKPE
K1000 PEDTKEAKGEDVKVE
K1019 EERGPELKTDGKEEE
K1019 EERGPELKTDGKEEE
K1023 PELKTDGKEEEEQPS
K1023 PELKTDGKEEEEQPS
S1036-p PSTSATQssPAPGQS
S1037-p STSATQssPAPGQSK
K1044 sPAPGQSKKKIFKPE
K1045 PAPGQSKKKIFKPEE
K1046 APGQSKKKIFKPEEL
K1093 PDYFDIVKSPMDLST
K1102 PMDLSTIKRKLDTGQ
K1104 DLSTIKRKLDTGQYQ
K1143 RVYKYCSKLSEVFEQ
K1166 LGYCCGRKLEFSPQT
K1179 QTLCCYGKQLCTIPR
K1202 NRYHFCEKCFNEIQG
K1227 QPQTTINKEQFSKRK
S1294 LSAKRLPSTRLGTFL
T1295 SAKRLPSTRLGTFLE
K1330 RVVHASDKTVEVKPG
K1335 SDKTVEVKPGMKARF
K1339 VEVKPGMKARFVDSG
Y1354 EMAESFPYRTKALFA
Y1393-p PPNQRRVyIsyLDsV
S1395-p NQRRVyIsyLDsVHF
Y1396-p QRRVyIsyLDsVHFF
S1399-p VyIsyLDsVHFFRPK
Y1413-p KCLRTAVyHEILIGy
Y1420-p yHEILIGyLEyVKKL
Y1423-p ILIGyLEyVKKLGYT
K1426 GyLEyVKKLGYTTGH
K1472 WYKKMLDKAVSERIV
K1498-a EDRLTSAkELPYFEG
K1517 NVLEESIKELEQEEE
K1527 EQEEEERKREENTSN
K1541-a NESTDVTkGDSkNAk
K1545-a DVTkGDSkNAkkkNN
K1548-a kGDSkNAkkkNNkkT
K1549-a GDSkNAkkkNNkkTS
K1550-a DSkNAkkkNNkkTSk
K1553-a NAkkkNNkkTSkNkS
K1554-a AkkkNNkkTSkNkSS
K1557-a kNNkkTSkNkSSLSR
K1559-a NkkTSkNkSSLSRGN
K1567 SSLSRGNKKKPGMPN
K1568 SLSRGNKKKPGMPNV
K1569 LSRGNKKKPGMPNVS
K1582 VSNDLSQKLYATMEK
K1589 KLYATMEKHKEVFFV
K1636 FLTLARDKHLEFSSL
K1636 FLTLARDKHLEFSSL
K1673 VYTCNECKHHVETRW
K1698 CITCYNTKNHDHKME
K1703 NTKNHDHKMEKLGLG
K1706 NHDHKMEKLGLGLDD
S1725 QQAAATQSPGDSRRL
S1733-p PGDSRRLsIQRCIQS
K1759-a CSLPSCQkMKRVVQH
K1761 LPSCQkMKRVVQHTK
K1768 KRVVQHTKGCKRKTN
K1771 VQHTKGCKRKTNGGC
K1773 HTKGCKRKTNGGCPI
K1782 NGGCPICKQLIALCC
K1793 ALCCYHAKHCQENKC
K1799 AKHCQENKCPVPFCL
K1809 VPFCLNIKQKLRQQQ
K1811 FCLNIKQKLRQQQLQ
S1833-p MLRRRMAsMQRTGVA
S1961 QHQMPQMSPMAPMGM
S2040 GLGQVGVSPLKPGTV
R2060-m2 QNLLRTLrSPSSPLQ
K2087 QLLAAFIKQRAAKYA
K2092 FIKQRAAKYANPNPQ
R2143 PLQAGVQRAGLPQQQ
S2268-p LLQQQMGsPAQPNPM
S2276-p PAQPNPMsPQQHMLP
S2288-p MLPNQAQsPHLQGQQ
S2306-p SLSNQVRsPQPVPsP
S2312-p RsPQPVPsPRPQsQP
S2317-p VPsPRPQsQPPHssP
S2322-p PQsQPPHssPsPRMQ
S2323-p QsQPPHssPsPRMQP
S2325-p QPPHssPsPRMQPQP
S2364-p MEQGHFAsPDQNSML
4771 : Acetyl-CBP (Lys1535)/p300 (Lys1499) Antibody
  rat

 
S12 VVEPGPPSAKRPKLS
K77 IVQDAASKHKQLSEL
K79 QDAASKHKQLSELLR
S89 SELLRSGSSPNLNMG
S106 GPGQVMASQAQQNSP
S112 ASQAQQNSPGLSLIN
S116 QQNSPGLSLINSMVK
S120 PGLSLINSMVKSPMA
S286 TVLPNNLSPFAMDKK
K292 LSPFAMDKKAVTGGG
K293 SPFAMDKKAVTGGGM
N318 VQQPGLVNPVAPGMG
K337 TADPEKRKLIQQQLV
K351 VLLLHAHKCQRREQA
K374 LPHCRTMKNVLNHMT
K387 MTHCQSGKSCQVAHC
K405 RQIISHWKNCTRHDC
K419 CPVCLPLKNAGDKRN
K424 PLKNAGDKRNQQSIL
K490 PQPPVQAKNQQSQPS
S500 QSQPSGQSPQGMRSM
K570 PSSTGIRKQWHEDIT
K602 TPDPAALKDRRMENL
Y612 RMENLVAYARKVEGD
K615 NLVAYARKVEGDMYE
Y621 RKVEGDMYESANNRA
Y630-p SANNRAEyYHLLAEK
Y631 ANNRAEyYHLLAEKI
K637 yYHLLAEKIYKIQKE
S831 PQQAHQNSPSPVPSR
S833 QAHQNSPSPVPSRTP
T839 PSPVPSRTPTPHHTP
T841 PVPSRTPTPHHTPPS
T845 RTPTPHHTPPSIGTQ
T885 LRPPSRQTPTPPTHL
T887 PPSRQTPTPPTHLPP
T936 LLPPQPPTPLSQPAV
K968 NSQTIPEKQPSQEVK
K975 KQPSQEVKMEVKMDV
K979 QEVKMEVKMDVDQPE
K999 PDDTKEAKAEDGKVE
K1018 EERGPELKTEVKEEE
K1018 EERGPELKTEVKEEE
K1022 PELKTEVKEEEDQPS
K1022 PELKTEVKEEEDQPS
S1035 PSTSAAQSsPAPGQS
S1036-p STSAAQSsPAPGQSK
K1043 sPAPGQSKKKIFKPE
K1044 PAPGQSKKKIFKPEE
K1045 APGQSKKKIFKPEEL
K1092 PDYFDIVKSPMDLST
K1101 PMDLSTIKRKLDTGQ
K1103 DLSTIKRKLDTGQYQ
K1142 RVYKYCSKLSEVFEQ
K1165 LGYCCGRKLEFSPQT
K1178 QTLCCYGKQLCTIPR
K1201 NRYHFCEKCFNEIQG
K1226 QPQTTINKEQFSKRK
S1293 FSAKRLPSTRLGTFL
T1294 SAKRLPSTRLGTFLE
K1329 RVVHASDKTVEVKPG
K1334 SDKTVEVKPGMKARF
K1338 VEVKPGMKARFVDSG
Y1353-p EMAESFPyRTKALFA
Y1392 PPNQRRVYISYLDSV
S1394 NQRRVYISYLDSVHF
Y1395 QRRVYISYLDSVHFF
S1398 VYISYLDSVHFFRPK
Y1412 KCLRTAVYHEILIGY
Y1419 YHEILIGYLEYVKKL
Y1422 ILIGYLEYVKKLGYT
K1425 GYLEYVKKLGYTTGH
K1471 WYKKMLDKAVSERIV
K1497 EDRLTSAKELPYFEG
K1516 NVLEESIKELEQEEE
K1526 EQEEEERKREENTSN
K1540 NESTDVTKGDSKNAK
K1544 DVTKGDSKNAKKKNN
K1547 KGDSKNAKKKNNKKT
K1548 GDSKNAKKKNNKKTS
K1549 DSKNAKKKNNKKTSK
K1552 NAKKKNNKKTSKNKS
K1553 AKKKNNKKTSKNKSS
K1556 KNNKKTSKNKSSLSR
K1558 NKKTSKNKSSLSRGN
K1566 SSLSRGNKKKPGVPN
K1567 SLSRGNKKKPGVPNV
K1568 LSRGNKKKPGVPNVS
K1581 VSNDLSQKLYATMEK
K1588 KLYATMEKHKEVFFV
K1635 FLTLARDKHLEFSSL
K1635 FLTLARDKHLEFSSL
K1672 VYTCNECKHHVETRW
K1697 CITCYNTKNHDHKME
K1702 NTKNHDHKMEKLGLG
K1705 NHDHKMEKLGLGLDD
S1724 QQAAATQSPGDSRRL
S1732 PGDSRRLSIQRCIQS
K1758 CSLPSCQKMKRVVQH
K1760 LPSCQKMKRVVQHTK
K1767 KRVVQHTKGCKRKTN
K1770 VQHTKGCKRKTNGGC
K1772 HTKGCKRKTNGGCPI
K1781 NGGCPICKQLIALCC
K1792 ALCCYHAKHCQENKC
K1798 AKHCQENKCPVPFCL
K1808 VPFCLNIKQKLRQQQ
K1810 FCLNIKQKLRQQQLQ
S1832 MLRRRMASMQRTGVA
A1957 RPIQHQMAPMAPMGM
S2036 GLGQVGVSPLKPGTV
R2056 QNLLRTLRSPSSPLQ
K2083 QLLAAFIKQRAAKYA
K2088 FIKQRAAKYANSNPQ
R2139 PMQAGVQRAGLPQQQ
S2269 LLQQQMGSPAQPNPM
S2277 PAQPNPMSPQQHMLP
S2289 MLPNQAQSPHLQGQQ
S2307 SLSNQVRSPQPVPSP
S2313 RSPQPVPSPRPQSQP
S2318 VPSPRPQSQPPHSSP
S2323 PQSQPPHSSPSPRMQ
S2324 QSQPPHSSPSPRMQP
S2326 QPPHSSPSPRMQPQP
S2365 MEQGHFASPDQNSML
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