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- EMDB-36599: Structure of E6AP-E6 complex in Att1 state -

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Basic information

Entry
Database: EMDB / ID: EMD-36599
TitleStructure of E6AP-E6 complex in Att1 state
Map data
Sample
  • Complex: E6AP-E6 complex
    • Protein or peptide: Protein E6
    • Protein or peptide: Ubiquitin-protein ligase E3A
  • Ligand: ZINC ION
KeywordsComplex / Viral protein / Tumor / LIGASE/ONCOPROTEIN / LIGASE-ONCOPROTEIN complex
Function / homology
Function and homology information


sperm entry / positive regulation of Golgi lumen acidification / symbiont-mediated suppression of host transcription / motor learning / negative regulation of dendritic spine morphogenesis / regulation of ubiquitin-dependent protein catabolic process / prostate gland growth / HECT-type E3 ubiquitin transferase / regulation of proteolysis / activation of GTPase activity ...sperm entry / positive regulation of Golgi lumen acidification / symbiont-mediated suppression of host transcription / motor learning / negative regulation of dendritic spine morphogenesis / regulation of ubiquitin-dependent protein catabolic process / prostate gland growth / HECT-type E3 ubiquitin transferase / regulation of proteolysis / activation of GTPase activity / androgen receptor signaling pathway / locomotory exploration behavior / progesterone receptor signaling pathway / protein autoubiquitination / protein K48-linked ubiquitination / ovarian follicle development / cellular response to brain-derived neurotrophic factor stimulus / negative regulation of TORC1 signaling / proteasome complex / response to cocaine / positive regulation of protein ubiquitination / response to progesterone / PDZ domain binding / regulation of synaptic plasticity / brain development / response to hydrogen peroxide / regulation of circadian rhythm / protein polyubiquitination / ubiquitin-protein transferase activity / ubiquitin protein ligase activity / rhythmic process / Antigen processing: Ubiquitination & Proteasome degradation / ubiquitin-dependent protein catabolic process / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / symbiont-mediated perturbation of host ubiquitin-like protein modification / proteasome-mediated ubiquitin-dependent protein catabolic process / host cell cytoplasm / transcription coactivator activity / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / virus-mediated perturbation of host defense response / DNA-templated transcription / glutamatergic synapse / host cell nucleus / positive regulation of transcription by RNA polymerase II / proteolysis / DNA binding / identical protein binding / metal ion binding / nucleus / cytosol
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) / HECT domain / HECT, E3 ligase catalytic domain ...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) / HECT domain / HECT, E3 ligase catalytic domain / HECT-domain (ubiquitin-transferase) / HECT domain profile. / Domain Homologous to E6-AP Carboxyl Terminus with
Similarity search - Domain/homology
Protein E6 / Ubiquitin-protein ligase E3A
Similarity search - Component
Biological speciesHomo sapiens (human) / Human papillomavirus 16
Methodsingle particle reconstruction / cryo EM / Resolution: 2.6 Å
AuthorsWang Z / Yu X
Funding support China, 6 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32000896 China
National Natural Science Foundation of China (NSFC)81821005 China
National Natural Science Foundation of China (NSFC)92253303 China
Ministry of Science and Technology (MoST, China)2022YFC3400500 China
Ministry of Science and Technology (MoST, China)2021ZD0203900 China
Ministry of Science and Technology (MoST, China)2022YFC2804800 China
CitationJournal: Nat Commun / Year: 2024
Title: Structural insights into the functional mechanism of the ubiquitin ligase E6AP.
Authors: Zhen Wang / Fengying Fan / Zhihai Li / Fei Ye / Qingxia Wang / Rongchao Gao / Jiaxuan Qiu / Yixin Lv / Min Lin / Wenwen Xu / Cheng Luo / Xuekui Yu /
Abstract: E6AP dysfunction is associated with Angelman syndrome and Autism spectrum disorder. Additionally, the host E6AP is hijacked by the high-risk HPV E6 to aberrantly ubiquitinate the tumor suppressor ...E6AP dysfunction is associated with Angelman syndrome and Autism spectrum disorder. Additionally, the host E6AP is hijacked by the high-risk HPV E6 to aberrantly ubiquitinate the tumor suppressor p53, which is linked with development of multiple types of cancer, including most cervical cancers. Here we show that E6AP and the E6AP/E6 complex exist, respectively, as a monomer and a dimer of the E6AP/E6 protomer. The short α1-helix of E6AP transforms into a longer helical structure when in complex with E6. The extended α1-helices of the dimer intersect symmetrically and contribute to the dimerization. The two protomers sway around the crossed region of the two α1-helices to promote the attachment and detachment of substrates to the catalytic C-lobe of E6AP, thus facilitating ubiquitin transfer. These findings, complemented by mutagenesis analysis, suggest that the α1-helix, through conformational transformations, controls the transition between the inactive monomer and the active dimer of E6AP.
History
DepositionJun 17, 2023-
Header (metadata) releaseJun 5, 2024-
Map releaseJun 5, 2024-
UpdateJun 5, 2024-
Current statusJun 5, 2024Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_36599.png

Downloads & links

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Map

FileDownload / File: emd_36599.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
1.07 Å/pix.
x 256 pix.
= 274.176 Å		1.07 Å/pix.
x 256 pix.
= 274.176 Å		1.07 Å/pix.
x 256 pix.
= 274.176 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.071 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.06
Minimum - Maximum-0.024282875 - 1.3941064
Average (Standard dev.)0.0011326296 (±0.022010041)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 274.176 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_36599_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_36599_half_map_2.map
Projections & Slices
AxesZYX

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Histogram

Histogram (log scale)

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Sample components

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Entire : E6AP-E6 complex

EntireName: E6AP-E6 complex
Components
  • Complex: E6AP-E6 complex
    • Protein or peptide: Protein E6
    • Protein or peptide: Ubiquitin-protein ligase E3A
  • Ligand: ZINC ION

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Supramolecule #1: E6AP-E6 complex

SupramoleculeName: E6AP-E6 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Protein E6

MacromoleculeName: Protein E6 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Human papillomavirus 16
Molecular weightTheoretical: 19.157135 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString:
MHQKRTAMFQ DPQERPRKLP QLCTELQTTI HDIILECVYC KQQLLRREVY DFAFRDLCIV YRDGNPYAVC DKCLKFYSKI SEYRHYSYS LYGTTLEQQY NKPLSDLLIR CINCQKPLSP EEKQRHLDKK QRFHNIRGRW TGRCMSCSRS SRTRRETQL

UniProtKB: Protein E6

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Macromolecule #2: Ubiquitin-protein ligase E3A

MacromoleculeName: Ubiquitin-protein ligase E3A / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO / EC number: HECT-type E3 ubiquitin transferase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 100.779445 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MEKLHQCYWK SGEPQSDDIE ASRMKRAAAK HLIERYYHQL TEGCGNEACT NEFCASCPTF LRMDNNAAAI KALELYKINA KLCDPHPSK KGASSAYLEN SKGAPNNSCS EIKMNKKGAR IDFKDVTYLT EEKVYEILEL CREREDYSPL IRVIGRVFSS A EALVQSFR ...String:
MEKLHQCYWK SGEPQSDDIE ASRMKRAAAK HLIERYYHQL TEGCGNEACT NEFCASCPTF LRMDNNAAAI KALELYKINA KLCDPHPSK KGASSAYLEN SKGAPNNSCS EIKMNKKGAR IDFKDVTYLT EEKVYEILEL CREREDYSPL IRVIGRVFSS A EALVQSFR KVKQHTKEEL KSLQAKDEDK DEDEKEKAAC SAAAMEEDSE ASSSRIGDSS QGDNNLQKLG PDDVSVDIDA IR RVYTRLL SNEKIETAFL NALVYLSPNV ECDLTYHNVY SRDPNYLNLF IIVMENRNLH SPEYLEMALP LFCKAMSKLP LAA QGKLIR LWSKYNADQI RRMMETFQQL ITYKVISNEF NSRNLVNDDD AIVAASKCLK MVYYANVVGG EVDTNHNEED DEEP IPESS ELTLQELLGE ERRNKKGPRV DPLETELGVK TLDCRKPLIP FEEFINEPLN EVLEMDKDYT FFKVETENKF SFMTC PFIL NAVTKNLGLY YDNRIRMYSE RRITVLYSLV QGQQLNPYLR LKVRRDHIID DALVRLEMIA MENPADLKKQ LYVEFE GEQ GVDEGGVSKE FFQLVVEEIF NPDIGMFTYD ESTKLFWFNP SSFETEGQFT LIGIVLGLAI YNNCILDVHF PMVVYRK LM GKKGTFRDLG DSHPVLYQSL KDLLEYEGNV EDDMMITFQI SQTDLFGNPM MYDLKENGDK IPITNENRKE FVNLYSDY I LNKSVEKQFK AFRRGFHMVT NESPLKYLFR PEEIELLICG SRNLDFQALE ETTEYDGGYT RDSVLIREFW EIVHSFTDE QKRLFLQFTT GTDRAPVGGL GKLKMIIAKN GPDTERLPTS HTAFNVLLLP EYSSKEKLKE RLLKAITYAK GFGML

UniProtKB: Ubiquitin-protein ligase E3A

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Macromolecule #3: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 3 / Number of copies: 4 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.5 µm
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER
Initial angle assignmentType: OTHER
Final angle assignmentType: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 233242
FSC plot (resolution estimation)

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