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- PDB-8r1f: Monomeric E6AP-E6-p53 ternary complex -

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Basic information

Entry
Database: PDB / ID: 8r1f
TitleMonomeric E6AP-E6-p53 ternary complex
Components
  • Cellular tumor antigen p53
  • Ubiquitin-like protein SMT3,Protein E6
  • Ubiquitin-protein ligase E3A
KeywordsLIGASE / E3 ligase / viral protein / transcription factor.
Function / homology
Function and homology information


sperm entry / positive regulation of Golgi lumen acidification / symbiont-mediated suppression of host transcription / regulation of ubiquitin-dependent protein catabolic process / SUMO is conjugated to E1 (UBA2:SAE1) / SUMOylation of nuclear envelope proteins / SUMO is transferred from E1 to E2 (UBE2I, UBC9) / SUMO is proteolytically processed / SUMOylation of transcription factors / SUMOylation of transcription cofactors ...sperm entry / positive regulation of Golgi lumen acidification / symbiont-mediated suppression of host transcription / regulation of ubiquitin-dependent protein catabolic process / SUMO is conjugated to E1 (UBA2:SAE1) / SUMOylation of nuclear envelope proteins / SUMO is transferred from E1 to E2 (UBE2I, UBC9) / SUMO is proteolytically processed / SUMOylation of transcription factors / SUMOylation of transcription cofactors / Postmitotic nuclear pore complex (NPC) reformation / septin ring / SUMOylation of DNA damage response and repair proteins / Transcriptional and post-translational regulation of MITF-M expression and activity / symbiont-mediated suppression of host apoptosis / SUMOylation of DNA replication proteins / prostate gland growth / SUMOylation of SUMOylation proteins / HECT-type E3 ubiquitin transferase / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / SUMOylation of RNA binding proteins / negative regulation of helicase activity / Loss of function of TP53 in cancer due to loss of tetramerization ability / Regulation of TP53 Expression / signal transduction by p53 class mediator / negative regulation of G1 to G0 transition / negative regulation of glucose catabolic process to lactate via pyruvate / Transcriptional activation of cell cycle inhibitor p21 / regulation of intrinsic apoptotic signaling pathway by p53 class mediator / negative regulation of pentose-phosphate shunt / ATP-dependent DNA/DNA annealing activity / Activation of NOXA and translocation to mitochondria / regulation of cell cycle G2/M phase transition / regulation of fibroblast apoptotic process / oligodendrocyte apoptotic process / negative regulation of miRNA processing / intrinsic apoptotic signaling pathway in response to hypoxia / positive regulation of thymocyte apoptotic process / oxidative stress-induced premature senescence / regulation of tissue remodeling / positive regulation of mitochondrial membrane permeability / regulation of Cdc42 protein signal transduction / mRNA transcription / bone marrow development / positive regulation of programmed necrotic cell death / circadian behavior / T cell proliferation involved in immune response / regulation of mitochondrial membrane permeability involved in apoptotic process / germ cell nucleus / SUMOylation of chromatin organization proteins / RUNX3 regulates CDKN1A transcription / glucose catabolic process to lactate via pyruvate / TP53 Regulates Transcription of Death Receptors and Ligands / Activation of PUMA and translocation to mitochondria / TP53 regulates transcription of additional cell cycle genes whose exact role in the p53 pathway remain uncertain / regulation of DNA damage response, signal transduction by p53 class mediator / histone deacetylase regulator activity / negative regulation of glial cell proliferation / Regulation of TP53 Activity through Association with Co-factors / negative regulation of neuroblast proliferation / mitochondrial DNA repair / T cell lineage commitment / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / ER overload response / thymocyte apoptotic process / B cell lineage commitment / TP53 Regulates Transcription of Caspase Activators and Caspases / cardiac septum morphogenesis / androgen receptor signaling pathway / negative regulation of mitophagy / negative regulation of DNA replication / entrainment of circadian clock by photoperiod / negative regulation of telomere maintenance via telomerase / Zygotic genome activation (ZGA) / positive regulation of release of cytochrome c from mitochondria / PI5P Regulates TP53 Acetylation / Association of TriC/CCT with target proteins during biosynthesis / necroptotic process / TP53 Regulates Transcription of Genes Involved in Cytochrome C Release / TFIID-class transcription factor complex binding / SUMOylation of transcription factors / TP53 regulates transcription of several additional cell death genes whose specific roles in p53-dependent apoptosis remain uncertain / intrinsic apoptotic signaling pathway by p53 class mediator / ubiquitin-like protein ligase binding / negative regulation of reactive oxygen species metabolic process / rRNA transcription / Transcriptional Regulation by VENTX / regulation of proteolysis / cellular response to UV-C / replicative senescence / protein sumoylation / general transcription initiation factor binding / progesterone receptor signaling pathway / cellular response to actinomycin D / intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress / positive regulation of RNA polymerase II transcription preinitiation complex assembly / positive regulation of execution phase of apoptosis / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / neuroblast proliferation / Pyroptosis
Similarity search - Function
Ubiquitin-protein ligase E3A / Ubiquitin-protein ligase E3A, N-terminal zinc-binding domain / Ubiquitin-protein ligase E3A, N-terminal zinc-binding domain superfamily / Amino-terminal Zinc-binding domain of ubiquitin ligase E3A / Ubiquitin-protein ligase E3B/C / E6 early regulatory protein / E6 superfamily / Early Protein (E6) / Rad60/SUMO-like domain / Ubiquitin-2 like Rad60 SUMO-like ...Ubiquitin-protein ligase E3A / Ubiquitin-protein ligase E3A, N-terminal zinc-binding domain / Ubiquitin-protein ligase E3A, N-terminal zinc-binding domain superfamily / Amino-terminal Zinc-binding domain of ubiquitin ligase E3A / Ubiquitin-protein ligase E3B/C / E6 early regulatory protein / E6 superfamily / Early Protein (E6) / Rad60/SUMO-like domain / Ubiquitin-2 like Rad60 SUMO-like / HECT domain / HECT, E3 ligase catalytic domain / HECT-domain (ubiquitin-transferase) / HECT domain profile. / Domain Homologous to E6-AP Carboxyl Terminus with / Cellular tumor antigen p53, transactivation domain 2 / Transactivation domain 2 / p53 transactivation domain / P53 transactivation motif / p53 family signature. / p53, tetramerisation domain / P53 tetramerisation motif / p53, DNA-binding domain / P53 DNA-binding domain / p53 tumour suppressor family / p53-like tetramerisation domain superfamily / p53/RUNT-type transcription factor, DNA-binding domain superfamily / p53-like transcription factor, DNA-binding / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Ubiquitin-like domain superfamily
Similarity search - Domain/homology
Protein E6 / Cellular tumor antigen p53 / Ubiquitin-protein ligase E3A / Ubiquitin-like protein SMT3
Similarity search - Component
Biological speciesHomo sapiens (human)
Saccharomyces cerevisiae (brewer's yeast)
Human papillomavirus type 16
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.67 Å
AuthorsSandate, C.R. / Chakraborty, D. / Kater, L. / Kempf, G. / Thoma, N.H.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Biorxiv / Year: 2023
Title: Structural insights into viral hijacking of p53 by E6 and E6AP
Authors: Sandate, C.R. / Chakraborty, D. / Kater, L. / Kempf, G. / Thoma, N.H.
History
DepositionNov 1, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Dec 6, 2023Provider: repository / Type: Initial release
Revision 1.0Dec 6, 2023Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
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Revision 1.0Dec 6, 2023Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
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Revision 1.0Dec 6, 2023Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
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Revision 1.0Dec 6, 2023Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
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Revision 1.1Jun 19, 2024Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.title / _citation.year / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.2Jul 9, 2025Group: Data collection / Structure summary / Category: em_admin / em_software / pdbx_entry_details
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.1Jul 9, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / Item: _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Ubiquitin-protein ligase E3A
B: Ubiquitin-like protein SMT3,Protein E6
C: Cellular tumor antigen p53
hetero molecules


Theoretical massNumber of molelcules
Total (without water)181,8306
Polymers181,6343
Non-polymers1963
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein Ubiquitin-protein ligase E3A / E6AP ubiquitin-protein ligase / HECT-type ubiquitin transferase E3A / Human papillomavirus E6- ...E6AP ubiquitin-protein ligase / HECT-type ubiquitin transferase E3A / Human papillomavirus E6-associated protein / Oncogenic protein-associated protein E6-AP / Renal carcinoma antigen NY-REN-54


Mass: 103595.500 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: UBE3A, E6AP, EPVE6AP, HPVE6A / Production host: Trichoplusia ni (cabbage looper)
References: UniProt: Q05086, HECT-type E3 ubiquitin transferase
#2: Protein Ubiquitin-like protein SMT3,Protein E6


Mass: 31542.988 Da / Num. of mol.: 1 / Mutation: C80S,C97S,C111S,C140S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast), (gene. exp.) Human papillomavirus type 16
Gene: SMT3, YDR510W, D9719.15, E6 / Production host: Escherichia coli (E. coli) / References: UniProt: Q12306, UniProt: P03126
#3: Protein Cellular tumor antigen p53 / Antigen NY-CO-13 / Phosphoprotein p53 / Tumor suppressor p53


Mass: 46495.152 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TP53, P53 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P04637
#4: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Zn
Has ligand of interestN
Has protein modificationN

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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: Monomeric E6AP-E6-p53 ternary complex / Type: COMPLEX / Entity ID: #1-#3 / Source: MULTIPLE SOURCES
Molecular weightValue: 0.176 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Trichoplusia ni (cabbage looper)
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMHEPES1
2100 mMKCl1
30.5 mMMgCl21
40.5 mMTCEP1
SpecimenConc.: 1.2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: 15 mA current, Pelco EasyGlow / Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 4 K

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Electron microscopy imaging

MicroscopyModel: TFS GLACIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 120000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 200 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) / Num. of real images: 18039

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Processing

EM software
IDNameVersionCategory
1cryoSPARCv.3particle selection
2EPU3image acquisition
7cryoSPARCv.3model fitting
12cryoSPARCv.43D reconstruction
13cryoSPARCv.3 or v.4model refinement
14PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 16800000 / Details: Blob picker
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.67 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 297000 / Algorithm: BACK PROJECTION / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0088540
ELECTRON MICROSCOPYf_angle_d0.97811541
ELECTRON MICROSCOPYf_dihedral_angle_d11.493271
ELECTRON MICROSCOPYf_chiral_restr0.0681260
ELECTRON MICROSCOPYf_plane_restr0.0161501

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