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- EMDB-42508: Rpn1/Nub1UBL-focused alignment of the non-substrate-engaged human... -
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Open data
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Basic information
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Title | Rpn1/Nub1UBL-focused alignment of the non-substrate-engaged human 26S proteasome | |||||||||
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![]() | 26S Proteasome / Nub1 / Fat10 / MOTOR PROTEIN / HYDROLASE-PROTEIN BINDING complex | |||||||||
Function / homology | ![]() regulation of ubiquitin-dependent protein catabolic process / proteasome accessory complex / proteasome regulatory particle / positive regulation of proteasomal protein catabolic process / proteasome-activating activity / proteasome regulatory particle, base subcomplex / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / Somitogenesis ...regulation of ubiquitin-dependent protein catabolic process / proteasome accessory complex / proteasome regulatory particle / positive regulation of proteasomal protein catabolic process / proteasome-activating activity / proteasome regulatory particle, base subcomplex / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / Somitogenesis / regulation of protein catabolic process / proteasome storage granule / response to tumor necrosis factor / response to type II interferon / enzyme regulator activity / proteasome complex / Regulation of activated PAK-2p34 by proteasome mediated degradation / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Degradation of DVL / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Dectin-1 mediated noncanonical NF-kB signaling / Degradation of AXIN / Hh mutants are degraded by ERAD / P-body / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Hedgehog ligand biogenesis / G2/M Checkpoints / Defective CFTR causes cystic fibrosis / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Autodegradation of the E3 ubiquitin ligase COP1 / Negative regulation of NOTCH4 signaling / Vif-mediated degradation of APOBEC3G / Regulation of RUNX3 expression and activity / Hedgehog 'on' state / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / MAPK6/MAPK4 signaling / Degradation of beta-catenin by the destruction complex / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / ABC-family proteins mediated transport / CDK-mediated phosphorylation and removal of Cdc6 / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / Regulation of expression of SLITs and ROBOs / FCERI mediated NF-kB activation / cytoplasmic ribonucleoprotein granule / Regulation of PTEN stability and activity / Interleukin-1 signaling / Orc1 removal from chromatin / Regulation of RAS by GAPs / Regulation of RUNX2 expression and activity / osteoblast differentiation / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / azurophil granule lumen / UCH proteinases / KEAP1-NFE2L2 pathway / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Neddylation / ER-Phagosome pathway / ubiquitin-dependent protein catabolic process / secretory granule lumen / proteasome-mediated ubiquitin-dependent protein catabolic process / ficolin-1-rich granule lumen / Ub-specific processing proteases / protein ubiquitination / ubiquitin protein ligase binding / Neutrophil degranulation / nucleolus / ATP hydrolysis activity / RNA binding / extracellular exosome / extracellular region / nucleoplasm / ATP binding / nucleus / membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.7 Å | |||||||||
![]() | Arkinson C / Gee CL / Martin A | |||||||||
Funding support | ![]()
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![]() | ![]() Title: NUB1 traps unfolded FAT10 for ubiquitin-independent degradation by the 26S proteasome. Authors: Connor Arkinson / Ken C Dong / Christine L Gee / Shawn M Costello / Aimee Chi Soe / Greg L Hura / Susan Marqusee / Andreas Martin / ![]() Abstract: The ubiquitin-like modifier FAT10 targets hundreds of proteins in the mammalian immune system to the 26S proteasome for degradation. This degradation pathway requires the cofactor NUB1, yet the ...The ubiquitin-like modifier FAT10 targets hundreds of proteins in the mammalian immune system to the 26S proteasome for degradation. This degradation pathway requires the cofactor NUB1, yet the underlying mechanisms remain unknown. Here, we reconstituted a minimal in vitro system with human components and revealed that NUB1 uses the intrinsic instability of FAT10 to trap its N-terminal ubiquitin-like domain in an unfolded state and deliver it to the 26S proteasome for engagement, allowing the degradation of FAT10-ylated substrates in a ubiquitin-independent and p97-independent manner. Using hydrogen-deuterium exchange, structural modeling and site-directed mutagenesis, we identified the formation of an intricate complex with FAT10 that activates NUB1 for docking to the 26S proteasome, and our cryo-EM studies visualized the highly dynamic NUB1 complex bound to the proteasomal Rpn1 subunit during FAT10 delivery and the early stages of ATP-dependent degradation. These findings identified a previously unknown mode of cofactor-mediated, ubiquitin-independent substrate delivery to the 26S proteasome that relies on trapping partially unfolded states for engagement by the proteasomal ATPase motor. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 42.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 21.2 KB 21.2 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 9.2 KB | Display | ![]() |
Images | ![]() | 135.5 KB | ||
Filedesc metadata | ![]() | 7.9 KB | ||
Others | ![]() ![]() | 77.6 MB 77.6 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8usdMC ![]() 8usbC ![]() 8uscC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.048 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_42508_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_42508_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Human 26S proteasome complexed with Nub1 and Fat 10
Entire | Name: Human 26S proteasome complexed with Nub1 and Fat 10 |
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Components |
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-Supramolecule #1: Human 26S proteasome complexed with Nub1 and Fat 10
Supramolecule | Name: Human 26S proteasome complexed with Nub1 and Fat 10 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 2.6 MDa |
-Macromolecule #1: 26S proteasome non-ATPase regulatory subunit 2
Macromolecule | Name: 26S proteasome non-ATPase regulatory subunit 2 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 100.313625 KDa |
Sequence | String: MEEGGRDKAP VQPQQSPAAA PGGTDEKPSG KERRDAGDKD KEQELSEEDK QLQDELEMLV ERLGEKDTSL YRPALEELRR QIRSSTTSM TSVPKPLKFL RPHYGKLKEI YENMAPGENK RFAADIISVL AMTMSGEREC LKYRLVGSQE ELASWGHEYV R HLAGEVAK ...String: MEEGGRDKAP VQPQQSPAAA PGGTDEKPSG KERRDAGDKD KEQELSEEDK QLQDELEMLV ERLGEKDTSL YRPALEELRR QIRSSTTSM TSVPKPLKFL RPHYGKLKEI YENMAPGENK RFAADIISVL AMTMSGEREC LKYRLVGSQE ELASWGHEYV R HLAGEVAK EWQELDDAEK VQREPLLTLV KEIVPYNMAH NAEHEACDLL MEIEQVDMLE KDIDENAYAK VCLYLTSCVN YV PEPENSA LLRCALGVFR KFSRFPEALR LALMLNDMEL VEDIFTSCKD VVVQKQMAFM LGRHGVFLEL SEDVEEYEDL TEI MSNVQL NSNFLALARE LDIMEPKVPD DIYKTHLENN RFGGSGSQVD SARMNLASSF VNGFVNAAFG QDKLLTDDGN KWLY KNKDH GMLSAAASLG MILLWDVDGG LTQIDKYLYS SEDYIKSGAL LACGIVNSGV RNECDPALAL LSDYVLHNSN TMRLG SIFG LGLAYAGSNR EDVLTLLLPV MGDSKSSMEV AGVTALACGM IAVGSCNGDV TSTILQTIME KSETELKDTY ARWLPL GLG LNHLGKGEAI EAILAALEVV SEPFRSFANT LVDVCAYAGS GNVLKVQQLL HICSEHFDSK EKEEDKDKKE KKDKDKK EA PADMGAHQGV AVLGIALIAM GEEIGAEMAL RTFGHLLRYG EPTLRRAVPL ALALISVSNP RLNILDTLSK FSHDADPE V SYNSIFAMGM VGSGTNNARL AAMLRQLAQY HAKDPNNLFM VRLAQGLTHL GKGTLTLCPY HSDRQLMSQV AVAGLLTVL VSFLDVRNII LGKSHYVLYG LVAAMQPRML VTFDEELRPL PVSVRVGQAV DVVGQAGKPK TITGFQTHTT PVLLAHGERA ELATEEFLP VTPILEGFVI LRKNPNYDL UniProtKB: 26S proteasome non-ATPase regulatory subunit 2 |
-Macromolecule #2: NEDD8 ultimate buster 1
Macromolecule | Name: NEDD8 ultimate buster 1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 29.577182 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MAQNKYLQAK LTQFLREDRI QLWKPPYTDE NKKVGLALKD LAKQYSDRLE CCENEVEKVI EEIRCKAIER GTGNDNYRTT GIATIEVFL PPRLKKDRKN LLETRLHITG RELRSKIAET FGLQENYIKI VINKKQLQLG KTLEEQGVAH NVKAMVLELK Q SEEDARKN ...String: MAQNKYLQAK LTQFLREDRI QLWKPPYTDE NKKVGLALKD LAKQYSDRLE CCENEVEKVI EEIRCKAIER GTGNDNYRTT GIATIEVFL PPRLKKDRKN LLETRLHITG RELRSKIAET FGLQENYIKI VINKKQLQLG KTLEEQGVAH NVKAMVLELK Q SEEDARKN FQLEEEEQNE AKLKEKQIQR TKRGLEILAK RAAETVVDPE MTPYLDIANQ TGRSIRIPPS ERKALMLAMG YH EKGRAFL KRKEYGI UniProtKB: NEDD8 ultimate buster 1 |
-Macromolecule #3: 26S proteasome regulatory subunit 7
Macromolecule | Name: 26S proteasome regulatory subunit 7 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 48.700805 KDa |
Sequence | String: MPDYLGADQR KTKEDEKDDK PIRALDEGDI ALLKTYGQST YSRQIKQVED DIQQLLKKIN ELTGIKESDT GLAPPALWDL AADKQTLQS EQPLQVARCT KIINADSEDP KYIINVKQFA KFVVDLSDQV APTDIEEGMR VGVDRNKYQI HIPLPPKIDP T VTMMQVEE ...String: MPDYLGADQR KTKEDEKDDK PIRALDEGDI ALLKTYGQST YSRQIKQVED DIQQLLKKIN ELTGIKESDT GLAPPALWDL AADKQTLQS EQPLQVARCT KIINADSEDP KYIINVKQFA KFVVDLSDQV APTDIEEGMR VGVDRNKYQI HIPLPPKIDP T VTMMQVEE KPDVTYSDVG GCKEQIEKLR EVVETPLLHP ERFVNLGIEP PKGVLLFGPP GTGKTLCARA VANRTDACFI RV IGSELVQ KYVGEGARMV RELFEMARTK KACLIFFDEI DAIGGARFDD GAGGDNEVQR TMLELINQLD GFDPRGNIKV LMA TNRPDT LDPALMRPGR LDRKIEFSLP DLEGRTHIFK IHARSMSVER DIRFELLARL CPNSTGAEIR SVCTEAGMFA IRAR RKIAT EKDFLEAVNK VIKSYAKFSA TPRYMTYN UniProtKB: 26S proteasome regulatory subunit 7 |
-Macromolecule #4: 26S proteasome non-ATPase regulatory subunit 1
Macromolecule | Name: 26S proteasome non-ATPase regulatory subunit 1 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 105.958234 KDa |
Sequence | String: MITSAAGIIS LLDEDEPQLK EFALHKLNAV VNDFWAEISE SVDKIEVLYE DEGFRSRQFA ALVASKVFYH LGAFEESLNY ALGAGDLFN VNDNSEYVET IIAKCIDHYT KQCVENADLP EGEKKPIDQR LEGIVNKMFQ RCLDDHKYKQ AIGIALETRR L DVFEKTIL ...String: MITSAAGIIS LLDEDEPQLK EFALHKLNAV VNDFWAEISE SVDKIEVLYE DEGFRSRQFA ALVASKVFYH LGAFEESLNY ALGAGDLFN VNDNSEYVET IIAKCIDHYT KQCVENADLP EGEKKPIDQR LEGIVNKMFQ RCLDDHKYKQ AIGIALETRR L DVFEKTIL ESNDVPGMLA YSLKLCMSLM QNKQFRNKVL RVLVKIYMNL EKPDFINVCQ CLIFLDDPQA VSDILEKLVK ED NLLMAYQ ICFDLYESAS QQFLSSVIQN LRTVGTPIAS VPGSTNTGTV PGSEKDSDSM ETEEKTSSAF VGKTPEASPE PKD QTLKMI KILSGEMAIE LHLQFLIRNN NTDLMILKNT KDAVRNSVCH TATVIANSFM HCGTTSDQFL RDNLEWLARA TNWA KFTAT ASLGVIHKGH EKEALQLMAT YLPKDTSPGS AYQEGGGLYA LGLIHANHGG DIIDYLLNQL KNASNDIVRH GGSLG LGLA AMGTARQDVY DLLKTNLYQD DAVTGEAAGL ALGLVMLGSK NAQAIEDMVG YAQETQHEKI LRGLAVGIAL VMYGRM EEA DALIESLCRD KDPILRRSGM YTVAMAYCGS GNNKAIRRLL HVAVSDVNDD VRRAAVESLG FILFRTPEQC PSVVSLL SE SYNPHVRYGA AMALGICCAG TGNKEAINLL EPMTNDPVNY VRQGALIASA LIMIQQTEIT CPKVNQFRQL YSKVINDK H DDVMAKFGAI LAQGILDAGG HNVTISLQSR TGHTHMPSVV GVLVFTQFWF WFPLSHFLSL AYTPTCVIGL NKDLKMPKV QYKSNCKPST FAYPAPLEVP KEKEKEKVST AVLSITAKAK KKEKEKEKKE EEKMEVDEAE KKEEKEKKKE PEPNFQLLDN PARVMPAQL KVLTMPETCR YQPFKPLSIG GIIILKDTSE DIEELVEPVA AHGPKIEEEE QEPEPPEPFE YIDD UniProtKB: 26S proteasome non-ATPase regulatory subunit 1 |
-Macromolecule #5: 26S proteasome regulatory subunit 4
Macromolecule | Name: 26S proteasome regulatory subunit 4 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 49.260504 KDa |
Sequence | String: MGQSQSGGHG PGGGKKDDKD KKKKYEPPVP TRVGKKKKKT KGPDAASKLP LVTPHTQCRL KLLKLERIKD YLLMEEEFIR NQEQMKPLE EKQEEERSKV DDLRGTPMSV GTLEEIIDDN HAIVSTSVGS EHYVSILSFV DKDLLEPGCS VLLNHKVHAV I GVLMDDTD ...String: MGQSQSGGHG PGGGKKDDKD KKKKYEPPVP TRVGKKKKKT KGPDAASKLP LVTPHTQCRL KLLKLERIKD YLLMEEEFIR NQEQMKPLE EKQEEERSKV DDLRGTPMSV GTLEEIIDDN HAIVSTSVGS EHYVSILSFV DKDLLEPGCS VLLNHKVHAV I GVLMDDTD PLVTVMKVEK APQETYADIG GLDNQIQEIK ESVELPLTHP EYYEEMGIKP PKGVILYGPP GTGKTLLAKA VA NQTSATF LRVVGSELIQ KYLGDGPKLV RELFRVAEEH APSIVFIDEI DAIGTKRYDS NSGGEREIQR TMLELLNQLD GFD SRGDVK VIMATNRIET LDPALIRPGR IDRKIEFPLP DEKTKKRIFQ IHTSRMTLAD DVTLDDLIMA KDDLSGADIK AICT EAGLM ALRERRMKVT NEDFKKSKEN VLYKKQEGTP EGLYL UniProtKB: 26S proteasome regulatory subunit 4 |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.7 µm / Nominal defocus min: 0.5 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |