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- EMDB-27201: EM map of the human UBR5 HECT-type E3 ubiquitin ligase in a dimer... -

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Basic information

Entry
Database: EMDB / ID: EMD-27201
TitleEM map of the human UBR5 HECT-type E3 ubiquitin ligase in a dimeric form
Map dataPrimary map
Sample
  • Complex: Homodimer of human E3 ligase UBR5
    • Protein or peptide: E3 ubiquitin-protein ligase UBR5
  • Ligand: ZINC ION
KeywordsHECT / E3 ligase / Dimer / LIGASE
Function / homology
Function and homology information


heterochromatin boundary formation / protein K29-linked ubiquitination / cytoplasm protein quality control by the ubiquitin-proteasome system / protein branched polyubiquitination / nuclear protein quality control by the ubiquitin-proteasome system / HECT-type E3 ubiquitin transferase / cytoplasm protein quality control / protein K11-linked ubiquitination / ubiquitin-ubiquitin ligase activity / DNA repair-dependent chromatin remodeling ...heterochromatin boundary formation / protein K29-linked ubiquitination / cytoplasm protein quality control by the ubiquitin-proteasome system / protein branched polyubiquitination / nuclear protein quality control by the ubiquitin-proteasome system / HECT-type E3 ubiquitin transferase / cytoplasm protein quality control / protein K11-linked ubiquitination / ubiquitin-ubiquitin ligase activity / DNA repair-dependent chromatin remodeling / protein K48-linked ubiquitination / progesterone receptor signaling pathway / negative regulation of smoothened signaling pathway / ubiquitin binding / positive regulation of protein import into nucleus / protein polyubiquitination / ubiquitin protein ligase activity / positive regulation of canonical Wnt signaling pathway / proteasome-mediated ubiquitin-dependent protein catabolic process / DNA repair / DNA damage response / positive regulation of gene expression / chromatin / perinuclear region of cytoplasm / protein-containing complex / RNA binding / zinc ion binding / nucleoplasm / membrane / nucleus / cytosol / cytoplasm
Similarity search - Function
E3 ubiquitin ligase EDD, ubiquitin-associated domain / : / E3 ubiquitin ligase EDD / Poly(A)-binding protein C-terminal (PABC) domain profile. / C-terminal domain of Poly(A)-binding protein. Present also in Drosophila hyperplastics discs protein. / Zinc finger, UBR-type / Zinc finger UBR-type profile. / Putative zinc finger in N-recognin, a recognition component of the N-end rule pathway / Polyadenylate-binding protein/Hyperplastic disc protein / PABC (PABP) domain ...E3 ubiquitin ligase EDD, ubiquitin-associated domain / : / E3 ubiquitin ligase EDD / Poly(A)-binding protein C-terminal (PABC) domain profile. / C-terminal domain of Poly(A)-binding protein. Present also in Drosophila hyperplastics discs protein. / Zinc finger, UBR-type / Zinc finger UBR-type profile. / Putative zinc finger in N-recognin, a recognition component of the N-end rule pathway / Polyadenylate-binding protein/Hyperplastic disc protein / PABC (PABP) domain / Poly-adenylate binding protein, unique domain / Regulator of chromosome condensation 1/beta-lactamase-inhibitor protein II / 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
E3 ubiquitin-protein ligase UBR5
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsWang F / He Q / Lin G / Li H
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM131754 United States
CitationJournal: Structure / Year: 2023
Title: Structure of the human UBR5 E3 ubiquitin ligase.
Authors: Feng Wang / Qing He / Wenhu Zhan / Ziqi Yu / Efrat Finkin-Groner / Xiaojing Ma / Gang Lin / Huilin Li /
Abstract: The human UBR5 is a single polypeptide chain homology to E6AP C terminus (HECT)-type E3 ubiquitin ligase essential for embryonic development in mammals. Dysregulated UBR5 functions like an ...The human UBR5 is a single polypeptide chain homology to E6AP C terminus (HECT)-type E3 ubiquitin ligase essential for embryonic development in mammals. Dysregulated UBR5 functions like an oncoprotein to promote cancer growth and metastasis. Here, we report that UBR5 assembles into a dimer and a tetramer. Our cryoelectron microscopy (cryo-EM) structures reveal that two crescent-shaped UBR5 monomers assemble head to tail to form the dimer, and two dimers bind face to face to form the cage-like tetramer with all four catalytic HECT domains facing the central cavity. Importantly, the N-terminal region of one subunit and the HECT of the other form an "intermolecular jaw" in the dimer. We show the jaw-lining residues are important for function, suggesting that the intermolecular jaw functions to recruit ubiquitin-loaded E2 to UBR5. Further work is needed to understand how oligomerization regulates UBR5 ligase activity. This work provides a framework for structure-based anticancer drug development and contributes to a growing appreciation of E3 ligase diversity.
History
DepositionJun 2, 2022-
Header (metadata) releaseApr 19, 2023-
Map releaseApr 19, 2023-
UpdateJun 12, 2024-
Current statusJun 12, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_27201.png

Downloads & links

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Map

FileDownload / File: emd_27201.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationPrimary map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 400 pix.
= 331.2 Å		0.83 Å/pix.
x 400 pix.
= 331.2 Å		0.83 Å/pix.
x 400 pix.
= 331.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.828 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.02
Minimum - Maximum-0.001728396 - 1.7440586
Average (Standard dev.)0.0012367503 (±0.023527952)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 331.2 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: RAW map

Fileemd_27201_additional_1.map
AnnotationRAW map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map A

Fileemd_27201_half_map_1.map
AnnotationHalf map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map B

Fileemd_27201_half_map_2.map
AnnotationHalf map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Homodimer of human E3 ligase UBR5

EntireName: Homodimer of human E3 ligase UBR5
Components
  • Complex: Homodimer of human E3 ligase UBR5
    • Protein or peptide: E3 ubiquitin-protein ligase UBR5
  • Ligand: ZINC ION

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Supramolecule #1: Homodimer of human E3 ligase UBR5

SupramoleculeName: Homodimer of human E3 ligase UBR5 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 / Details: UBR5 expressed in insect cell
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 610 KDa

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Macromolecule #1: E3 ubiquitin-protein ligase UBR5

MacromoleculeName: E3 ubiquitin-protein ligase UBR5 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: HECT-type E3 ubiquitin transferase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 310.604625 KDa
Recombinant expressionOrganism: Insect expression vector pBlueBachsGCA1 (others)
SequenceString: DYKDDDKMTS IHFVVHPLPG TEDQLNDRLR EVSEKLNKYN LNSHPPLNVL EQATIKQCVV GPNHAAFLLE DGRVCRIGFS VQPDRLELG KPDNNDGSKL NSNSGAGRTS RPGRTSDSPW FLSGSETLGR LAGNTLGSRW SSGVGGSGGG SSGRSSAGAR D SRRQTRVI ...String:
DYKDDDKMTS IHFVVHPLPG TEDQLNDRLR EVSEKLNKYN LNSHPPLNVL EQATIKQCVV GPNHAAFLLE DGRVCRIGFS VQPDRLELG KPDNNDGSKL NSNSGAGRTS RPGRTSDSPW FLSGSETLGR LAGNTLGSRW SSGVGGSGGG SSGRSSAGAR D SRRQTRVI RTGRDRGSGL LGSQPQPVIP ASVIPEELIS QAQVVLQGKS RSVIIRELQR TNLDVNLAVN NLLSRDDEDG DD GDDTASE SYLPGEDLMS LLDADIHSAH PSVIIDADAM FSEDISYFGY PSFRRSSLSR LGSSRVLLLP LERDSELLRE RES VLRLRE RRWLDGASFD NERGSTSKEG EPNLDKKNTP VQSPVSLGED LQWWPDKDGT KFICIGALYS ELLAVSSKGE LYQW KWSES EPYRNAQNPS LHHPRATFLG LTNEKIVLLS ANSIRATVAT ENNKVATWVD ETLSSVASKL EHTAQTYSEL QGERI VSLH CCALYTCAQL ENSLYWWGVV PFSQRKKMLE KARAKNKKPK SSAGISSMPN ITVGTQVCLR NNPLYHAGAV AFSISA GIP KVGVLMESVW NMNDSCRFQL RSPESLKNME KASKTTEAKP ESKQEPVKTE MGPPPSPAST CSDASSIASS ASMPYKR RR STPAPKEEEK VNEEQWSLRE VVFVEDVKNV PVGKVLKVDG AYVAVKFPGT SSNTNCQNSS GPDADPSSLL QDCRLLRI D ELQVVKTGGT PKVPDCFQRT PKKLCIPEKT EILAVNVDSK GVHAVLKTGN WVRYCIFDLA TGKAEQENNF PTSSIAFLG QNERNVAIFT AGQESPIILR DGNGTIYPMA KDCMGGIRDP DWLDLPPISS LGMGVHSLIN LPANSTIKKK AAVIIMAVEK QTLMQHILR CDYEACRQYL MNLEQAVVLE QNLQMLQTFI SHRCDGNRNI LHACVSVCFP TSNKETKEEE EAERSERNTF A ERLSAVEA IANAISVVSS NGPGNRAGSS SSRSLRLREM MRRSLRAAGL GRHEAGASSS DHQDPVSPPI APPSWVPDPP AM DPDGDID FILAPAVGSL TTAATGTGQG PSTSTIPGPS TEPSVVESKD RKANAHFILK LLCDSVVLQP YLRELLSAKD ARG MTPFMS AVSGRAYPAA ITILETAQKI AKAEISSSEK EEDVFMGMVC PSGTNPDDSP LYVLCCNDTC SFTWTGAEHI NQDI FECRT CGLLESLCCC TECARVCHKG HDCKLKRTSP TAYCDCWEKC KCKTLIAGQK SARLDLLYRL LTATNLVTLP NSRGE HLLL FLVQTVARQT VEHCQYRPPR IREDRNRKTA SPEDSDMPDH DLEPPRFAQL ALERVLQDWN ALKSMIMFGS QENKDP LSA SSRIGHLLPE EQVYLNQQSG TIRLDCFTHC LIVKCTADIL LLDTLLGTLV KELQNKYTPG RREEAIAVTM RFLRSVA RV FVILSVEMAS SKKKNNFIPQ PIGKCKRVFQ ALLPYAVEEL CNVAESLIVP VRMGIARPTA PFTLASTSID AMQGSEEL F SVEPLPPRPS SDQSSSSSQS QSSYIIRNPQ QRRISQSQPV RGRDEEQDDI VSADVEEVEV VEGVAGEEDH HDEQEEHGE ENAEAEGQHD EHDEDGSDME LDLLAAAETE SDSESNHSNQ DNASGRRSVV TAATAGSEAG ASSVPAFFSE DDSQSNDSSD SDSSSSQSD DIEQETFMLD EPLERTTNSS HANGAAQAPR SMQWAVRNTQ HQRAASTAPS STSTPAASSA GLIYIDPSNL R RSGTISTS AAAAAAALEA SNASSYLTSA SSLARAYSIV IRQISDLMGL IPKYNHLVYS QIPAAVKLTY QDAVNLQNYV EE KLIPTWN WMVSIMDSTE AQLRYGSALA SAGDPGHPNH PLHASQNSAR RERMTAREEA SLRTLEGRRR ATLLSARQGM MSA RGDFLN YALSLMRSHN DEHSDVLPVL DVCSLKHVAY VFQALIYWIK AMNQQTTLDT PQLERKRTRE LLELGIDNED SEHE NDDDT NQSATLNDKD DDSLPAETGQ NHPFFRRSDS MTFLGCIPPN PFEVPLAEAI PLADQPHLLQ PNARKEDLFG RPSQG LYSS SASSGKCLME VTVDRNCLEV LPTKMSYAAN LKNVMNMQNR QKKEGEEQPV LPEETESSKP GPSAHDLAAQ LKSSLL AEI GLTESEGPPL TSFRPQCSFM GMVISHDMLL GRWRLSLELF GRVFMEDVGA EPGSILTELG GFEVKESKFR REMEKLR NQ QSRDLSLEVD RDRDLLIQQT MRQLNNHFGR RCATTPMAVH RVKVTFKDEP GEGSGVARSF YTAIAQAFLS NEKLPNLE C IQNANKGTHT SLMQRLRNRG ERDRERERER EMRRSSGLRA GSRRDRDRDF RRQLSIDTRP FRPASEGNPS DDPEPLPAH RQALGERLYP RVQAMQPAFA SKITGMLLEL SPAQLLLLLA SEDSLRARVD EAMELIIAHG RENGADSILD LGLVDSSEKV QQENRKRHG SSRSVVDMDL DDTDDGDDNA PLFYQPGKRG FYTPRPGKNT EARLNCFRNI GRILGLCLLQ NELCPITLNR H VIKVLLGR KVNWHDFAFF DPVMYESLRQ LILASQSSDA DAVFSAMDLA FAIDLCKEEG GGQVELIPNG VNIPVTPQNV YE YVRKYAE HRMLVVAEQP LHAMRKGLLD VLPKNSLEDL TAEDFRLLVN GCGEVNVQML ISFTSFNDES GENAEKLLQF KRW FWSIVE KMSMTERQDL VYFWTSSPSL PASEEGFQPM PSITIRPPDD QHLPTANTCI SRLYVPLYSS KQILKQKLLL AIKT KNFGF V

UniProtKB: E3 ubiquitin-protein ligase UBR5

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Macromolecule #2: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 2 / Number of copies: 6 / 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

Concentration0.7 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormulaName
150.0 mMNaClsodium chloride
25.0 mMHEPES4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid
0.5 mMTECPtris(2-carboxyethyl)phosphine
GridModel: Quantifoil R2/1 / Material: COPPER / Mesh: 300 / Support film - Material: GOLD / Support film - topology: CONTINUOUS / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 279 K / Instrument: FEI VITROBOT MARK IV / Details: blot 2S, blot forth 2.
Detailsfreshly purified UBR5

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Electron microscopy

MicroscopeFEI TITAN KRIOS
TemperatureMin: 193.0 K / Max: 193.0 K
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 65.0 e/Å2
Details: Images were collected in movie-mode at 75 frames per second
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 105000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 3.2.0) / Number images used: 844403
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION
Final 3D classificationNumber classes: 3 / Avg.num./class: 80
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: RIGID BODY FIT / Overall B value: 90.94 / Target criteria: Correlation coefficient
Output model

PDB-8d4x:
Structure of the human UBR5 HECT-type E3 ubiquitin ligase in a dimeric form

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