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- EMDB-21223: CryoEM map of Hrd1/Hrd3 part from Hrd1-Usa1/Der1/Hrd3 complex -

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Basic information

Entry
Database: EMDB / ID: EMD-21223
TitleCryoEM map of Hrd1/Hrd3 part from Hrd1-Usa1/Der1/Hrd3 complex
Map data
Sample
  • Complex: Hrd1-Usa1/Der1/Hrd3 complex
    • Protein or peptide: ERAD-associated E3 ubiquitin-protein ligase HRD1
    • Protein or peptide: ERAD-associated E3 ubiquitin-protein ligase component HRD3
Keywordsretro-translocation / ERAD / protein degradation / ubiquitination / PROTEIN TRANSPORT
Function / homology
Function and homology information


Hrd1p ubiquitin ligase ERAD-M complex / detection of unfolded protein / luminal surveillance complex / Hrd1p ubiquitin ligase complex / ubiquitin-dependent glycoprotein ERAD pathway / Hrd1p ubiquitin ligase ERAD-L complex / fungal-type cell wall organization / negative regulation of protein autoubiquitination / ERAD pathway / retrograde protein transport, ER to cytosol ...Hrd1p ubiquitin ligase ERAD-M complex / detection of unfolded protein / luminal surveillance complex / Hrd1p ubiquitin ligase complex / ubiquitin-dependent glycoprotein ERAD pathway / Hrd1p ubiquitin ligase ERAD-L complex / fungal-type cell wall organization / negative regulation of protein autoubiquitination / ERAD pathway / retrograde protein transport, ER to cytosol / protein K48-linked ubiquitination / protein autoubiquitination / : / endoplasmic reticulum unfolded protein response / RING-type E3 ubiquitin transferase / ubiquitin-protein transferase activity / ubiquitin protein ligase activity / ubiquitin-dependent protein catabolic process / endoplasmic reticulum membrane / endoplasmic reticulum / identical protein binding / metal ion binding / cytoplasm
Similarity search - Function
Sel1 repeat / Sel1-like repeat / Sel1-like repeats. / Ring finger domain / Ring finger / Zinc finger RING-type profile. / Zinc finger, RING-type / Tetratricopeptide-like helical domain superfamily / Zinc finger, RING/FYVE/PHD-type
Similarity search - Domain/homology
ERAD-associated E3 ubiquitin-protein ligase component HRD3 / ERAD-associated E3 ubiquitin-protein ligase HRD1
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsWu X / Rapoport TA
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM052586 United States
CitationJournal: Science / Year: 2020
Title: Structural basis of ER-associated protein degradation mediated by the Hrd1 ubiquitin ligase complex.
Authors: Xudong Wu / Marc Siggel / Sergey Ovchinnikov / Wei Mi / Vladimir Svetlov / Evgeny Nudler / Maofu Liao / Gerhard Hummer / Tom A Rapoport /
Abstract: Misfolded luminal endoplasmic reticulum (ER) proteins undergo ER-associated degradation (ERAD-L): They are retrotranslocated into the cytosol, polyubiquitinated, and degraded by the proteasome. ERAD- ...Misfolded luminal endoplasmic reticulum (ER) proteins undergo ER-associated degradation (ERAD-L): They are retrotranslocated into the cytosol, polyubiquitinated, and degraded by the proteasome. ERAD-L is mediated by the Hrd1 complex (composed of Hrd1, Hrd3, Der1, Usa1, and Yos9), but the mechanism of retrotranslocation remains mysterious. Here, we report a structure of the active Hrd1 complex, as determined by cryo-electron microscopy analysis of two subcomplexes. Hrd3 and Yos9 jointly create a luminal binding site that recognizes glycosylated substrates. Hrd1 and the rhomboid-like Der1 protein form two "half-channels" with cytosolic and luminal cavities, respectively, and lateral gates facing one another in a thinned membrane region. These structures, along with crosslinking and molecular dynamics simulation results, suggest how a polypeptide loop of an ERAD-L substrate moves through the ER membrane.
History
DepositionJan 18, 2020-
Header (metadata) releaseApr 29, 2020-
Map releaseApr 29, 2020-
UpdateMar 6, 2024-
Current statusMar 6, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6vk1
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_21223.png

Downloads & links

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Map

FileDownload / File: emd_21223.map.gz / Format: CCP4 / Size: 15.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.35 Å
Density
Contour LevelBy AUTHOR: 0.025 / Movie #1: 0.025
Minimum - Maximum-0.19662113 - 0.2807825
Average (Standard dev.)-0.000010070171 (±0.008070127)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions160160160
Spacing160160160
CellA=B=C: 216.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.351.351.35
M x/y/z160160160
origin x/y/z0.0000.0000.000
length x/y/z216.000216.000216.000
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ350350350
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS160160160
D min/max/mean-0.1970.281-0.000

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Supplemental data

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Sample components

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Entire : Hrd1-Usa1/Der1/Hrd3 complex

EntireName: Hrd1-Usa1/Der1/Hrd3 complex
Components
  • Complex: Hrd1-Usa1/Der1/Hrd3 complex
    • Protein or peptide: ERAD-associated E3 ubiquitin-protein ligase HRD1
    • Protein or peptide: ERAD-associated E3 ubiquitin-protein ligase component HRD3

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Supramolecule #1: Hrd1-Usa1/Der1/Hrd3 complex

SupramoleculeName: Hrd1-Usa1/Der1/Hrd3 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)

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Macromolecule #1: ERAD-associated E3 ubiquitin-protein ligase HRD1

MacromoleculeName: ERAD-associated E3 ubiquitin-protein ligase HRD1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: RING-type E3 ubiquitin transferase
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Molecular weightTheoretical: 55.638773 KDa
Recombinant expressionOrganism: Saccharomyces cerevisiae (brewer's yeast)
SequenceString: MVPENRRKQL AIFVVVTYLL TFYCVYSATK TSVSFLQVTL KLNEGFNLMV LSIFILLNST LLWQLLTKLL FGELRLIEHE HIFERLPFT IINTLFMSSL FHERYFFTVA FFGLLLLYLK VFHWILKDRL EALLQSINDS TTMKTLIFSR FSFNLVLLAV V DYQIITRC ...String:
MVPENRRKQL AIFVVVTYLL TFYCVYSATK TSVSFLQVTL KLNEGFNLMV LSIFILLNST LLWQLLTKLL FGELRLIEHE HIFERLPFT IINTLFMSSL FHERYFFTVA FFGLLLLYLK VFHWILKDRL EALLQSINDS TTMKTLIFSR FSFNLVLLAV V DYQIITRC ISSIYTNQKS DIESTSLYLI QVMEFTMLLI DLLNLFLQTC LNFWEFYRSQ QSLSNENNHI VHGDPTDENT VE SDQSQPV LNDDDDDDDD DRQFTGLEGK FMYEKAIDVF TRFLKTALHL SMLIPFRMPM MLLKDVVWDI LALYQSGTSL WKI WRNNKQ LDDTLVTVTV EQLQNSANDD NICIICMDEL IHSPNQQTWK NKNKKPKRLP CGHILHLSCL KNWMERSQTC PICR LPVFD EKGNVVQTTF TSNSDITTQT TVTDSTGIAT DQQGFANEVD LLPTRTTSPD IRIVPTQNID TLAMRTRSTS TPSPT

UniProtKB: ERAD-associated E3 ubiquitin-protein ligase HRD1

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Macromolecule #2: ERAD-associated E3 ubiquitin-protein ligase component HRD3

MacromoleculeName: ERAD-associated E3 ubiquitin-protein ligase component HRD3
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Molecular weightTheoretical: 88.239102 KDa
Recombinant expressionOrganism: Saccharomyces cerevisiae (brewer's yeast)
SequenceString: MITLLLYLCV ICNAIVLIRA DSIADPWPEA RHLLNTIAKS RDPMKEAAME PNADEFVGFY VPMDYSPRNE EKNYQSIWQN EITDSQRHI YELLVQSSEQ FNNSEATYTL SQIHLWSQYN FPHNMTLAHK YLEKFNDLTH FTNHSAIFDL AVMYATGGCA S GNDQTVIP ...String:
MITLLLYLCV ICNAIVLIRA DSIADPWPEA RHLLNTIAKS RDPMKEAAME PNADEFVGFY VPMDYSPRNE EKNYQSIWQN EITDSQRHI YELLVQSSEQ FNNSEATYTL SQIHLWSQYN FPHNMTLAHK YLEKFNDLTH FTNHSAIFDL AVMYATGGCA S GNDQTVIP QDSAKALLYY QRAAQLGNLK AKQVLAYKYY SGFNVPRNFH KSLVLYRDIA EQLRKSYSRD EWDIVFPYWE SY NVRISDF ESGLLGKGLN SVPSSTVRKR TTRPDIGSPF IAQVNGVQMT LQIEPMGRFA FNGNDGNING DEDDEDASER RII RIYYAA LNDYKGTYSQ SRNCERAKNL LELTYKEFQP HVDNLDPLQV FYYVRCLQLL GHMYFTGEGS SKPNIHMAEE ILTT SLEIS RRAQGPIGRA CIDLGLINQY ITNNISQAIS YYMKAMKTQA NNGIVEFQLS KLATSFPEEK IGDPFNLMET AYLNG FIPA IYEFAVMIES GMNSKSSVEN TAYLFKTFVD KNEAIMAPKL RTAFAALIND RSEVALWAYS QLAEQGYETA QVSAAY LMY QLPYEFEDPP RTTDQRKTLA ISYYTRAFKQ GNIDAGVVAG DIYFQMQNYS KAMALYQGAA LKYSIQAIWN LGYMHEH GL GVNRDFHLAK RYYDQVSEHD HRFYLASKLS VLKLHLKSWL TWITREKVNY WKPSSPLNPN EDTQHSKTSW YKQLTKIL Q RMRHKEDSDK AAEDSHKHRT VVQNGANHRG DDQEEASEIL GFQMED

UniProtKB: ERAD-associated E3 ubiquitin-protein ligase component HRD3

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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

Concentration5 mg/mL
BufferpH: 7.4
Component:
ConcentrationFormulaName
250.0 mMNaClSodium chloridesodium chloride
25.0 mMC8H18N2O4SHEPES
0.06 %C56H92O29digitonin
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 400 / Pretreatment - Type: GLOW DISCHARGE
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: OTHER / Imaging mode: OTHER
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 54.8 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: RANDOM CONICAL TILT
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 425035

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