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- PDB-6k4n: Cryo-EM structure of p300 -

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Entry
Database: PDB / ID: 6k4n
TitleCryo-EM structure of p300
ComponentsHistone acetyltransferase p300
KeywordsTRANSCRIPTION / transcriptional coactivator / HAT / auto-inhibited closed conformation
Function / homology
Function and homology information


behavioral defense response / peptidyl-lysine propionylation / histone lactyltransferase (CoA-dependent) activity / peptidyl-lysine crotonylation / peptidyl-lysine butyrylation / histone butyryltransferase activity / histone H3K122 acetyltransferase activity / swimming / peptide butyryltransferase activity / histone H2B acetyltransferase activity ...behavioral defense response / peptidyl-lysine propionylation / histone lactyltransferase (CoA-dependent) activity / peptidyl-lysine crotonylation / peptidyl-lysine butyrylation / histone butyryltransferase activity / histone H3K122 acetyltransferase activity / swimming / peptide butyryltransferase activity / histone H2B acetyltransferase activity / thigmotaxis / peptide 2-hydroxyisobutyryltransferase activity / histone crotonyltransferase activity / protein propionyltransferase activity / NOTCH2 intracellular domain regulates transcription / peptidyl-lysine acetylation / lysine N-acetyltransferase activity, acting on acetyl phosphate as donor / cellular response to L-leucine / histone H4 acetyltransferase activity / internal peptidyl-lysine acetylation / histone H3 acetyltransferase activity / NFE2L2 regulating ER-stress associated genes / peptide N-acetyltransferase activity / Activation of the TFAP2 (AP-2) family of transcription factors / NFE2L2 regulating inflammation associated genes / acetylation-dependent protein binding / NGF-stimulated transcription / STAT3 nuclear events downstream of ALK signaling / Polo-like kinase mediated events / histone H3K18 acetyltransferase activity / LRR FLII-interacting protein 1 (LRRFIP1) activates type I IFN production / N-terminal peptidyl-lysine acetylation / histone H3K27 acetyltransferase activity / NFE2L2 regulates pentose phosphate pathway genes / NFE2L2 regulating MDR associated enzymes / regulation of androgen receptor signaling pathway / positive regulation by host of viral transcription / regulation of mitochondrion organization / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / RUNX3 regulates NOTCH signaling / face morphogenesis / NOTCH4 Intracellular Domain Regulates Transcription / Regulation of FOXO transcriptional activity by acetylation / Regulation of gene expression by Hypoxia-inducible Factor / regulation of glycolytic process / Nuclear events mediated by NFE2L2 / Regulation of NFE2L2 gene expression / NOTCH3 Intracellular Domain Regulates Transcription / platelet formation / NFE2L2 regulating anti-oxidant/detoxification enzymes / TRAF6 mediated IRF7 activation / megakaryocyte development / macrophage derived foam cell differentiation / FOXO-mediated transcription of cell death genes / NFE2L2 regulating tumorigenic genes / nuclear androgen receptor binding / peptide-lysine-N-acetyltransferase activity / regulation of tubulin deacetylation / STAT family protein binding / internal protein amino acid acetylation / acyltransferase activity / protein acetylation / fat cell differentiation / positive regulation of transforming growth factor beta receptor signaling pathway / Formation of paraxial mesoderm / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / PI5P Regulates TP53 Acetylation / Zygotic genome activation (ZGA) / stimulatory C-type lectin receptor signaling pathway / cellular response to nutrient levels / RUNX3 regulates p14-ARF / acetyltransferase activity / NF-kappaB binding / histone acetyltransferase complex / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / Attenuation phase / canonical NF-kappaB signal transduction / negative regulation of protein-containing complex assembly / negative regulation of gluconeogenesis / somitogenesis / positive regulation of T-helper 17 cell lineage commitment / pre-mRNA intronic binding / regulation of cellular response to heat / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / histone acetyltransferase activity / skeletal muscle tissue development / histone acetyltransferase / NR1H3 & NR1H2 regulate gene expression linked to cholesterol transport and efflux / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / transcription initiation-coupled chromatin remodeling / positive regulation of TORC1 signaling / Regulation of TP53 Activity through Acetylation / RORA activates gene expression / CD209 (DC-SIGN) signaling / negative regulation of autophagy / B cell differentiation / TP53 Regulates Transcription of Genes Involved in G2 Cell Cycle Arrest / SUMOylation of transcription cofactors / regulation of signal transduction by p53 class mediator / regulation of autophagy
Similarity search - Function
Nuclear receptor coactivator, CREB-bp-like, interlocking / Nuclear receptor coactivator, CREB-bp-like, interlocking domain superfamily / Creb binding / Zinc finger, TAZ-type / TAZ domain superfamily / TAZ zinc finger / Zinc finger TAZ-type profile. / TAZ zinc finger, present in p300 and CBP / Coactivator CBP, KIX domain / CREB-binding protein/p300, atypical RING domain ...Nuclear receptor coactivator, CREB-bp-like, interlocking / Nuclear receptor coactivator, CREB-bp-like, interlocking domain superfamily / Creb binding / Zinc finger, TAZ-type / TAZ domain superfamily / TAZ zinc finger / Zinc finger TAZ-type profile. / TAZ zinc finger, present in p300 and CBP / Coactivator CBP, KIX domain / CREB-binding protein/p300, atypical RING domain / CBP/p300-type histone acetyltransferase domain / CBP/p300, atypical RING domain superfamily / KIX domain / CREB-binding protein/p300, atypical RING domain / KIX domain profile. / CBP/p300-type histone acetyltransferase (HAT) domain profile. / Histone acetyltransferase Rtt109/CBP / Coactivator CBP, KIX domain superfamily / Histone acetylation protein / Histone acetylation protein / Zinc finger ZZ-type signature. / Zinc-binding domain, present in Dystrophin, CREB-binding protein. / Zinc finger, ZZ type / Zinc finger, ZZ-type / Zinc finger, ZZ-type superfamily / Zinc finger ZZ-type profile. / Nuclear receptor coactivator, interlocking / Bromodomain, conserved site / Bromodomain signature. / Bromodomain / Bromodomain profile. / bromo domain / Bromodomain / Bromodomain-like superfamily / Zinc finger, RING/FYVE/PHD-type
Similarity search - Domain/homology
Histone acetyltransferase p300
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 9.8 Å
AuthorsGhosh, R. / Roy, S. / Sengupta, J.
CitationJournal: Biochemistry / Year: 2019
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
DepositionMay 24, 2019Deposition site: PDBJ / Processing site: PDBJ
SupersessionJun 19, 2019ID: 5XZS
Revision 1.0Jun 19, 2019Provider: repository / Type: Initial release
Revision 1.1Jul 31, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID
Revision 1.2Aug 28, 2019Group: Data collection / Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.title
Revision 1.3Nov 6, 2019Group: Data collection / Other / Category: cell / Item: _cell.Z_PDB
Revision 1.4Mar 27, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type

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Assembly

Deposited unit
A: Histone acetyltransferase p300


Theoretical massNumber of molelcules
Total (without water)72,1001
Polymers72,1001
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Histone acetyltransferase p300 / p300 HAT / E1A-associated protein p300 / Histone butyryltransferase p300 / Histone ...p300 HAT / E1A-associated protein p300 / Histone butyryltransferase p300 / Histone crotonyltransferase p300 / Protein propionyltransferase p300 / Coordinate model: Cα atoms only


Mass: 72100.062 Da / Num. of mol.: 1 / Fragment: UNP RESIDUES 1046-1664
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: EP300, P300 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: Q09472, histone acetyltransferase, Transferases; Acyltransferases; Transferring groups other than aminoacyl groups

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: P300 PROTEIN / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Tecnai Polara / Image courtesy: FEI Company
MicroscopyModel: FEI POLARA 300
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 59000 X / Calibrated magnification: 78894 X / Nominal defocus max: 4500 nm / Nominal defocus min: 1500 nm / Cs: 2 mm
Image recordingElectron dose: 15 e/Å2 / Film or detector model: FEI EAGLE (4k x 4k)

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Processing

EM software
IDNameVersionCategory
4EMAN22.12CTF correction
7UCSF Chimera1.11model fitting
9EMAN22.2initial Euler assignment
10SPIDERfinal Euler assignment
11SPIDERclassification
12SPIDER3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 9.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 16152 / Algorithm: BACK PROJECTION / Symmetry type: POINT
Atomic model buildingPDB-ID: 4BHW

4bhw


Accession code: 4BHW / Source name: PDB / Type: experimental model
RefinementHighest resolution: 9.8 Å

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