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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-21223 | |||||||||
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Title | CryoEM map of Hrd1/Hrd3 part from Hrd1-Usa1/Der1/Hrd3 complex | |||||||||
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![]() | retro-translocation / ERAD / protein degradation / ubiquitination / PROTEIN TRANSPORT | |||||||||
Function / homology | ![]() Hrd1p ubiquitin ligase ERAD-M complex / ubiquitin-dependent glycoprotein ERAD pathway / detection of unfolded protein / luminal surveillance complex / Hrd1p ubiquitin ligase complex / Hrd1p ubiquitin ligase ERAD-L complex / fungal-type cell wall organization / negative regulation of protein autoubiquitination / retrograde protein transport, ER to cytosol / protein K48-linked ubiquitination ...Hrd1p ubiquitin ligase ERAD-M complex / ubiquitin-dependent glycoprotein ERAD pathway / detection of unfolded protein / luminal surveillance complex / Hrd1p ubiquitin ligase complex / Hrd1p ubiquitin ligase ERAD-L complex / fungal-type cell wall organization / negative regulation of protein autoubiquitination / retrograde protein transport, ER to cytosol / protein K48-linked ubiquitination / protein autoubiquitination / ERAD pathway / 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 | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
![]() | Wu X / Rapoport TA | |||||||||
Funding support | ![]()
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![]() | ![]() 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 |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 14.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 13.7 KB 13.7 KB | Display Display | ![]() |
Images | ![]() | 77.9 KB | ||
Filedesc metadata | ![]() | 6 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6vk1MC ![]() 6vjyC ![]() 6vjzC ![]() 6vk0C ![]() 6vk3C C: citing same article ( M: atomic model generated by this map |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Voxel size | X=Y=Z: 1.35 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Hrd1-Usa1/Der1/Hrd3 complex
Entire | Name: Hrd1-Usa1/Der1/Hrd3 complex |
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Components |
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-Supramolecule #1: Hrd1-Usa1/Der1/Hrd3 complex
Supramolecule | Name: Hrd1-Usa1/Der1/Hrd3 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() ![]() |
-Macromolecule #1: ERAD-associated E3 ubiquitin-protein ligase HRD1
Macromolecule | Name: 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 |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 55.638773 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: 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 |
-Macromolecule #2: ERAD-associated E3 ubiquitin-protein ligase component HRD3
Macromolecule | Name: ERAD-associated E3 ubiquitin-protein ligase component HRD3 type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 88.239102 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: 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 |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 5 mg/mL | ||||||||||||
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Buffer | pH: 7.4 Component:
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Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 400 / Pretreatment - Type: GLOW DISCHARGE | ||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 54.8 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: OTHER / Imaging mode: OTHER |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: RANDOM CONICAL TILT |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 425035 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0) |
Final angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0) |