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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-6792 | |||||||||
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Title | Cryo-EM structure of p300 | |||||||||
![]() | Cryo-EM structure of p300. Transcriptional coactivator p300 is a large, multidomain protein that possess (HAT) histone acetyltransferase activity. | |||||||||
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Function / homology | ![]() behavioral defense response / negative regulation of protein oligomerization / peptidyl-lysine propionylation / histone lactyltransferase (CoA-dependent) activity / peptidyl-lysine crotonylation / peptidyl-lysine butyrylation / histone butyryltransferase activity / swimming / peptide butyryltransferase activity / regulation of tubulin deacetylation ...behavioral defense response / negative regulation of protein oligomerization / peptidyl-lysine propionylation / histone lactyltransferase (CoA-dependent) activity / peptidyl-lysine crotonylation / peptidyl-lysine butyrylation / histone butyryltransferase activity / swimming / peptide butyryltransferase activity / regulation of tubulin deacetylation / histone H2B acetyltransferase activity / internal protein amino acid acetylation / peptide 2-hydroxyisobutyryltransferase activity / histone crotonyltransferase activity / thigmotaxis / protein propionyltransferase activity / NOTCH2 intracellular domain regulates transcription / L-lysine N-acetyltransferase activity, acting on acetyl phosphate as donor / positive regulation of TORC2 signaling / internal peptidyl-lysine acetylation / histone H4 acetyltransferase activity / cellular response to L-leucine / histone H3 acetyltransferase activity / NFE2L2 regulating ER-stress associated genes / protein N-acetyltransferase activity / acetylation-dependent protein binding / Activation of the TFAP2 (AP-2) family of transcription factors / NFE2L2 regulating inflammation associated genes / NGF-stimulated transcription / N-terminal peptidyl-lysine acetylation / LRR FLII-interacting protein 1 (LRRFIP1) activates type I IFN production / NFE2L2 regulates pentose phosphate pathway genes / STAT3 nuclear events downstream of ALK signaling / Polo-like kinase mediated events / NFE2L2 regulating MDR associated enzymes / TGFBR3 expression / positive regulation by host of viral transcription / regulation of androgen receptor signaling pathway / regulation of mitochondrion organization / Regulation of FOXO transcriptional activity by acetylation / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / RUNX3 regulates NOTCH signaling / Nuclear events mediated by NFE2L2 / NOTCH4 Intracellular Domain Regulates Transcription / face morphogenesis / Regulation of NFE2L2 gene expression / Regulation of gene expression by Hypoxia-inducible Factor / platelet formation / NOTCH3 Intracellular Domain Regulates Transcription / regulation of glycolytic process / TRAF6 mediated IRF7 activation / NFE2L2 regulating tumorigenic genes / NFE2L2 regulating anti-oxidant/detoxification enzymes / megakaryocyte development / protein-lysine-acetyltransferase activity / STAT family protein binding / nuclear androgen receptor binding / acyltransferase activity / protein acetylation / Formation of paraxial mesoderm / positive regulation of transforming growth factor beta receptor signaling pathway / histone acetyltransferase activity / acetyltransferase activity / PI5P Regulates TP53 Acetylation / FOXO-mediated transcription of cell death genes / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / fat cell differentiation / stimulatory C-type lectin receptor signaling pathway / Zygotic genome activation (ZGA) / RUNX3 regulates p14-ARF / histone acetyltransferase complex / canonical NF-kappaB signal transduction / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / NF-kappaB binding / negative regulation of gluconeogenesis / cellular response to nutrient levels / somitogenesis / negative regulation of protein-containing complex assembly / pre-mRNA intronic binding / Attenuation phase / positive regulation of T-helper 17 cell lineage commitment / histone H4K16 acetyltransferase activity / histone H3K56 acetyltransferase activity / histone H3K23 acetyltransferase activity / histone H2AK5 acetyltransferase activity / histone H2AK9 acetyltransferase activity / histone H2BK5 acetyltransferase activity / histone H2BK12 acetyltransferase activity / histone H3K4 acetyltransferase activity / histone H3K27 acetyltransferase activity / histone H3K36 acetyltransferase activity / histone H3K122 acetyltransferase activity / histone H3K18 acetyltransferase activity / histone H3K9 acetyltransferase activity / histone H3K14 acetyltransferase activity / histone H4K5 acetyltransferase activity / histone H4K8 acetyltransferase activity / histone H4K12 acetyltransferase activity / skeletal muscle tissue development / regulation of cellular response to heat Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 9.8 Å | |||||||||
![]() | Ghosh R / Roy S / Sengupta J | |||||||||
![]() | ![]() Title: Tumor Suppressor p53-Mediated Structural Reorganization of the Transcriptional Coactivator p300. Authors: Raka Ghosh / Stephanie Kaypee / Manidip Shasmal / Tapas K Kundu / Siddhartha Roy / Jayati Sengupta / ![]() Abstract: Transcriptional coactivator p300, a critical player in eukaryotic gene regulation, primarily functions as a histone acetyltransferase (HAT). It is also an important player in acetylation of a number ...Transcriptional coactivator p300, a critical player in eukaryotic gene regulation, primarily functions as a histone acetyltransferase (HAT). It is also an important player in acetylation of a number of nonhistone proteins, p53 being the most prominent one. Recruitment of p300 to p53 is pivotal in the regulation of p53-dependent genes. Emerging evidence suggests that p300 adopts an active conformation upon binding to the tetrameric p53, resulting in its enhanced acetylation activity. As a modular protein, p300 consists of multiple well-defined domains, where the structured domains are interlinked with unstructured linker regions. A crystal structure of the central domain of p300 encompassing Bromo, RING, PHD, and HAT domains demonstrates a compact module, where the HAT active site stays occluded by the RING domain. However, although p300 has a significant role in mediating the transcriptional activity of p53, only a few structural details on the complex of these two full-length proteins are available. Here, we present a cryo-electron microscopy (cryo-EM) study on the p300-p53 complex. The three-dimensional cryo-EM density map of the p300-p53 complex, when compared to the cryo-EM map of free p300, revealed that substantial change in the relative arrangement of Bromo and HAT domains occurs upon complex formation, which is likely required for exposing HAT active site and subsequent acetyltransferase activity. Our observation correlates well with previous studies showing that the presence of Bromodomain is obligatory for effective acetyltransferase activity of HAT. Thus, our result sheds new light on the mechanism whereby p300, following binding with p53, gets activated. | |||||||||
History |
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Structure visualization
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 951.5 KB | ![]() | |
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Header (meta data) | ![]() ![]() | 13.1 KB 13.1 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 2.8 KB | Display | ![]() |
Images | ![]() | 122.9 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6k4nMC ![]() 6791C ![]() 5xzcC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | Cryo-EM structure of p300. Transcriptional coactivator p300 is a large, multidomain protein that possess (HAT) histone acetyltransferase activity. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.89 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : p300 protein
Entire | Name: p300 protein |
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Components |
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-Supramolecule #1: p300 protein
Supramolecule | Name: p300 protein / type: organelle_or_cellular_component / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() ![]() |
-Macromolecule #1: Histone acetyltransferase p300
Macromolecule | Name: Histone acetyltransferase p300 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: histone acetyltransferase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 72.100062 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: KKIFKPEELR QALMPTLEAL YRQDPESLPF RQPVDPQLLG IPDYFDIVKS PMDLSTIKRK LDTGQYQEPW QYVDDIWLMF NNAWLYNRK TSRVYKYCSK LSEVFEQEID PVMQSLGYCC GRKLEFSPQT LCCYGKQLCT IPRDATYYSY QNRYHFCEKC F NEIQGESV ...String: KKIFKPEELR QALMPTLEAL YRQDPESLPF RQPVDPQLLG IPDYFDIVKS PMDLSTIKRK LDTGQYQEPW QYVDDIWLMF NNAWLYNRK TSRVYKYCSK LSEVFEQEID PVMQSLGYCC GRKLEFSPQT LCCYGKQLCT IPRDATYYSY QNRYHFCEKC F NEIQGESV SLGDDPSQPQ TTINKEQFSK RKNDTLDPEL FVECTECGRK MHQICVLHHE IIWPAGFVCD GCLKKSARTR KE NKFSAKR LPSTRLGTFL ENRVNDFLRR QNHPESGEVT VRVVHASDKT VEVKPGMKAR FVDSGEMAES FPYRTKALFA FEE IDGVDL CFFGMHVQEY GSDCPPPNQR RVYISYLDSV HFFRPKCLRT AVYHEILIGY LEYVKKLGYT TGHIWACPPS EGDD YIFHC HPPDQKIPKP KRLQEWYKKM LDKAVSERIV HDYKDIFKQA TEDRLTSAKE LPYFEGDFWP NVLEESIKEL EQEEE ERKR EENTSNESTD VTKGDSKNAK KKNNKKTSKN KSSLSRGNKK KPGMPNVSND LSQKLYATME KHKEVFFVIR LIAGPA ANS LPPIVDPDPL IPCDLMDGRD AFLTLARDKH LEFSSLRRAQ WSTMCMLVEL HTQSQD |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 8 Component:
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Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 279 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI POLARA 300 |
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Image recording | Film or detector model: FEI EAGLE (4k x 4k) / Average exposure time: 1.0 sec. / Average electron dose: 15.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 150.0 µm / Calibrated defocus max: 4.5 µm / Calibrated defocus min: 1.5 µm / Calibrated magnification: 78894 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.0 mm / Nominal defocus max: 4.5 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 59000 |
Sample stage | Specimen holder model: GATAN 910 MULTI-SPECIMEN SINGLE TILT CRYO TRANSFER HOLDER Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Tecnai Polara / Image courtesy: FEI Company |