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- EMDB-24277: Human PA28-20S-PA28 proteasome complex -

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Basic information

Entry
Database: EMDB / ID: EMD-24277
TitleHuman PA28-20S-PA28 proteasome complex
Map data
Sample
  • Complex: PA28-20S-PA28 proteasome complex
    • Protein or peptide: x 16 types
Function / homology
Function and homology information


proteasome activator complex / antigen processing and presentation of exogenous antigen / purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / Regulation of ornithine decarboxylase (ODC) / proteasome core complex / Cross-presentation of soluble exogenous antigens (endosomes) / Somitogenesis / immune system process / myofibril ...proteasome activator complex / antigen processing and presentation of exogenous antigen / purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / Regulation of ornithine decarboxylase (ODC) / proteasome core complex / Cross-presentation of soluble exogenous antigens (endosomes) / Somitogenesis / immune system process / myofibril / regulation of G1/S transition of mitotic cell cycle / endopeptidase activator activity / NF-kappaB binding / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / proteasome core complex, alpha-subunit complex / threonine-type endopeptidase activity / regulation of proteasomal protein catabolic process / negative regulation of inflammatory response to antigenic stimulus / response to organonitrogen compound / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / proteasome complex / proteolysis involved in protein catabolic process / sarcomere / Regulation of activated PAK-2p34 by proteasome mediated degradation / ciliary basal body / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / Asymmetric localization of PCP proteins / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / Ubiquitin-dependent degradation of Cyclin D / AUF1 (hnRNP D0) binds and destabilizes mRNA / TNFR2 non-canonical NF-kB pathway / Assembly of the pre-replicative complex / Vpu mediated degradation of CD4 / proteasomal protein catabolic process / Degradation of DVL / P-body / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Dectin-1 mediated noncanonical NF-kB signaling / Hh mutants are degraded by ERAD / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Degradation of AXIN / Defective CFTR causes cystic fibrosis / Degradation of GLI1 by the proteasome / lipopolysaccharide binding / Hedgehog ligand biogenesis / Activation of NF-kappaB in B cells / Negative regulation of NOTCH4 signaling / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / G2/M Checkpoints / Vif-mediated degradation of APOBEC3G / Autodegradation of the E3 ubiquitin ligase COP1 / Hedgehog 'on' state / Regulation of RUNX3 expression and activity / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / MAPK6/MAPK4 signaling / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / response to virus / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / ABC-family proteins mediated transport / Degradation of beta-catenin by the destruction complex / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / response to organic cyclic compound / 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 / nuclear matrix / FCERI mediated NF-kB activation / Regulation of PTEN stability and activity / Interleukin-1 signaling / Orc1 removal from chromatin / Regulation of RAS by GAPs / Separation of Sister Chromatids / Regulation of RUNX2 expression and activity / The role of GTSE1 in G2/M progression after G2 checkpoint / UCH proteinases / KEAP1-NFE2L2 pathway / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / Neddylation / RUNX1 regulates transcription of genes involved in differentiation of HSCs / positive regulation of NF-kappaB transcription factor activity / peptidase activity / ER-Phagosome pathway / regulation of inflammatory response / postsynapse / proteasome-mediated ubiquitin-dependent protein catabolic process / secretory granule lumen / endopeptidase activity / response to oxidative stress / ficolin-1-rich granule lumen / nuclear body / ribosome / Ub-specific processing proteases / cadherin binding / intracellular membrane-bounded organelle
Similarity search - Function
Proteasome activator PA28, N-terminal domain / Proteasome activator PA28, N-terminal domain superfamily / Proteasome activator pa28 alpha subunit / Proteasome activator PA28 / Proteasome activator PA28, C-terminal domain / Proteasome activator superfamily / Proteasome activator PA28, C-terminal domain superfamily / Proteasome activator pa28 beta subunit / Proteasome subunit alpha 1 / Proteasome beta subunit, C-terminal ...Proteasome activator PA28, N-terminal domain / Proteasome activator PA28, N-terminal domain superfamily / Proteasome activator pa28 alpha subunit / Proteasome activator PA28 / Proteasome activator PA28, C-terminal domain / Proteasome activator superfamily / Proteasome activator PA28, C-terminal domain superfamily / Proteasome activator pa28 beta subunit / Proteasome subunit alpha 1 / Proteasome beta subunit, C-terminal / Proteasome beta subunits C terminal / Proteasome subunit beta 4 / Proteasome subunit beta 2 / Proteasome beta 3 subunit / Proteasome subunit alpha6 / Proteasome subunit alpha5 / Proteasome beta-type subunits signature. / Peptidase T1A, proteasome beta-subunit / Proteasome beta-type subunit, conserved site / Proteasome subunit A N-terminal signature / Proteasome alpha-type subunits signature. / Proteasome alpha-subunit, N-terminal domain / Proteasome subunit A N-terminal signature Add an annotation / Proteasome alpha-type subunit / Proteasome alpha-type subunit profile. / Proteasome B-type subunit / Proteasome beta-type subunit profile. / Proteasome subunit / Proteasome, subunit alpha/beta / Nucleophile aminohydrolases, N-terminal
Similarity search - Domain/homology
Proteasome subunit alpha type-7 / Proteasome subunit beta type-1 / Proteasome subunit alpha type-1 / Proteasome subunit alpha type-2 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-4 / Proteasome subunit alpha type-5 / Proteasome subunit beta type-4 / Proteasome subunit beta type-6 / Proteasome subunit beta type-5 ...Proteasome subunit alpha type-7 / Proteasome subunit beta type-1 / Proteasome subunit alpha type-1 / Proteasome subunit alpha type-2 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-4 / Proteasome subunit alpha type-5 / Proteasome subunit beta type-4 / Proteasome subunit beta type-6 / Proteasome subunit beta type-5 / Proteasome subunit beta type-3 / Proteasome subunit beta type-2 / Proteasome subunit alpha type-6 / Proteasome activator complex subunit 1 / Proteasome subunit beta type-7 / Proteasome activator complex subunit 2
Similarity search - Component
Biological speciesHomo sapiens (human) / Human (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsZhao J / Makhija S / Huang B / Cheng Y
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM140847 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM124334 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM131641 United States
CitationJournal: Proc Natl Acad Sci U S A / Year: 2022
Title: Structural insights into the human PA28-20S proteasome enabled by efficient tagging and purification of endogenous proteins.
Authors: Jianhua Zhao / Suraj Makhija / Chenyu Zhou / Hanxiao Zhang / YongQiang Wang / Monita Muralidharan / Bo Huang / Yifan Cheng /
Abstract: The ability to produce folded and functional proteins is a necessity for structural biology and many other biological sciences. This task is particularly challenging for numerous biomedically ...The ability to produce folded and functional proteins is a necessity for structural biology and many other biological sciences. This task is particularly challenging for numerous biomedically important targets in human cells, including membrane proteins and large macromolecular assemblies, hampering mechanistic studies and drug development efforts. Here we describe a method combining CRISPR-Cas gene editing and fluorescence-activated cell sorting to rapidly tag and purify endogenous proteins in HEK cells for structural characterization. We applied this approach to study the human proteasome from HEK cells and rapidly determined cryogenic electron microscopy structures of major proteasomal complexes, including a high-resolution structure of intact human PA28αβ-20S. Our structures reveal that PA28 with a subunit stoichiometry of 3α/4β engages tightly with the 20S proteasome. Addition of a hydrophilic peptide shows that polypeptides entering through PA28 are held in the antechamber of 20S prior to degradation in the proteolytic chamber. This study provides critical insights into an important proteasome complex and demonstrates key methodologies for the tagging of proteins from endogenous sources.
History
DepositionJun 22, 2021-
Header (metadata) releaseNov 2, 2022-
Map releaseNov 2, 2022-
UpdateNov 2, 2022-
Current statusNov 2, 2022Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_24277.png

Downloads & links

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Map

FileDownload / File: emd_24277.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.2156 Å
Density
Contour LevelBy AUTHOR: 4.0
Minimum - Maximum-12.511411 - 24.562109
Average (Standard dev.)-1.8098405e-09 (±1.0)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 466.7904 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : PA28-20S-PA28 proteasome complex

EntireName: PA28-20S-PA28 proteasome complex
Components
  • Complex: PA28-20S-PA28 proteasome complex
    • Protein or peptide: Proteasome subunit alpha type-2
    • Protein or peptide: Proteasome subunit alpha type-4
    • Protein or peptide: Proteasome subunit alpha type-7
    • Protein or peptide: Proteasome subunit alpha type-5
    • Protein or peptide: Proteasome subunit alpha type-1
    • Protein or peptide: Proteasome subunit alpha type-3
    • Protein or peptide: Proteasome subunit alpha type-6
    • Protein or peptide: Proteasome subunit beta type-7
    • Protein or peptide: Proteasome subunit beta type-3PSMB3
    • Protein or peptide: Proteasome subunit beta type-2PSMB2
    • Protein or peptide: Proteasome subunit beta type-5PSMB5
    • Protein or peptide: Proteasome subunit beta type-1PSMB1
    • Protein or peptide: Proteasome subunit beta type-4PSMB4
    • Protein or peptide: Proteasome subunit beta type-6
    • Protein or peptide: Proteasome activator complex subunit 2
    • Protein or peptide: Proteasome activator complex subunit 1

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Supramolecule #1: PA28-20S-PA28 proteasome complex

SupramoleculeName: PA28-20S-PA28 proteasome complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Proteasome subunit alpha type-2

MacromoleculeName: Proteasome subunit alpha type-2 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 25.927535 KDa
SequenceString: MAERGYSFSL TTFSPSGKLV QIEYALAAVA GGAPSVGIKA ANGVVLATEK KQKSILYDER SVHKVEPITK HIGLVYSGMG PDYRVLVHR ARKLAQQYYL VYQEPIPTAQ LVQRVASVMQ EYTQSGGVRP FGVSLLICGW NEGRPYLFQS DPSGAYFAWK A TAMGKNYV ...String:
MAERGYSFSL TTFSPSGKLV QIEYALAAVA GGAPSVGIKA ANGVVLATEK KQKSILYDER SVHKVEPITK HIGLVYSGMG PDYRVLVHR ARKLAQQYYL VYQEPIPTAQ LVQRVASVMQ EYTQSGGVRP FGVSLLICGW NEGRPYLFQS DPSGAYFAWK A TAMGKNYV NGKTFLEKRY NEDLELEDAI HTAILTLKES FEGQMTEDNI EVGICNEAGF RRLTPTEVKD YLAAIA

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Macromolecule #2: Proteasome subunit alpha type-4

MacromoleculeName: Proteasome subunit alpha type-4 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 29.525842 KDa
SequenceString: MSRRYDSRTT IFSPEGRLYQ VEYAMEAIGH AGTCLGILAN DGVLLAAERR NIHKLLDEVF FSEKIYKLNE DMACSVAGIT SDANVLTNE LRLIAQRYLL QYQEPIPCEQ LVTALCDIKQ AYTQFGGKRP FGVSLLYIGW DKHYGFQLYQ SDPSGNYGGW K ATCIGNNS ...String:
MSRRYDSRTT IFSPEGRLYQ VEYAMEAIGH AGTCLGILAN DGVLLAAERR NIHKLLDEVF FSEKIYKLNE DMACSVAGIT SDANVLTNE LRLIAQRYLL QYQEPIPCEQ LVTALCDIKQ AYTQFGGKRP FGVSLLYIGW DKHYGFQLYQ SDPSGNYGGW K ATCIGNNS AAAVSMLKQD YKEGEMTLKS ALALAIKVLN KTMDVSKLSA EKVEIATLTR ENGKTVIRVL KQKEVEQLIK KH EEEEAKA EREKKEKEQK EKDK

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Macromolecule #3: Proteasome subunit alpha type-7

MacromoleculeName: Proteasome subunit alpha type-7 / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 27.929891 KDa
SequenceString: MSYDRAITVF SPDGHLFQVE YAQEAVKKGS TAVGVRGRDI VVLGVEKKSV AKLQDERTVR KICALDDNVC MAFAGLTADA RIVINRARV ECQSHRLTVE DPVTVEYITR YIASLKQRYT QSNGRRPFGI SALIVGFDFD GTPRLYQTDP SGTYHAWKAN A IGRGAKSV ...String:
MSYDRAITVF SPDGHLFQVE YAQEAVKKGS TAVGVRGRDI VVLGVEKKSV AKLQDERTVR KICALDDNVC MAFAGLTADA RIVINRARV ECQSHRLTVE DPVTVEYITR YIASLKQRYT QSNGRRPFGI SALIVGFDFD GTPRLYQTDP SGTYHAWKAN A IGRGAKSV REFLEKNYTD EAIETDDLTI KLVIKALLEV VQSGGKNIEL AVMRRDQSLK ILNPEEIEKY VAEIEKEKEE NE KKKQKKA S

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Macromolecule #4: Proteasome subunit alpha type-5

MacromoleculeName: Proteasome subunit alpha type-5 / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 26.435977 KDa
SequenceString: MFLTRSEYDR GVNTFSPEGR LFQVEYAIEA IKLGSTAIGI QTSEGVCLAV EKRITSPLME PSSIEKIVEI DAHIGCAMSG LIADAKTLI DKARVETQNH WFTYNETMTV ESVTQAVSNL ALQFGEEDAD PGAMSRPFGV ALLFGGVDEK GPQLFHMDPS G TFVQCDAR ...String:
MFLTRSEYDR GVNTFSPEGR LFQVEYAIEA IKLGSTAIGI QTSEGVCLAV EKRITSPLME PSSIEKIVEI DAHIGCAMSG LIADAKTLI DKARVETQNH WFTYNETMTV ESVTQAVSNL ALQFGEEDAD PGAMSRPFGV ALLFGGVDEK GPQLFHMDPS G TFVQCDAR AIGSASEGAQ SSLQEVYHKS MTLKEAIKSS LIILKQVMEE KLNATNIELA TVQPGQNFHM FTKEELEEVI KD I

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Macromolecule #5: Proteasome subunit alpha type-1

MacromoleculeName: Proteasome subunit alpha type-1 / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 29.595627 KDa
SequenceString: MFRNQYDNDV TVWSPQGRIH QIEYAMEAVK QGSATVGLKS KTHAVLVALK RAQSELAAHQ KKILHVDNHI GISIAGLTAD ARLLCNFMR QECLDSRFVF DRPLPVSRLV SLIGSKTQIP TQRYGRRPYG VGLLIAGYDD MGPHIFQTCP SANYFDCRAM S IGARSQSA ...String:
MFRNQYDNDV TVWSPQGRIH QIEYAMEAVK QGSATVGLKS KTHAVLVALK RAQSELAAHQ KKILHVDNHI GISIAGLTAD ARLLCNFMR QECLDSRFVF DRPLPVSRLV SLIGSKTQIP TQRYGRRPYG VGLLIAGYDD MGPHIFQTCP SANYFDCRAM S IGARSQSA RTYLERHMSE FMECNLNELV KHGLRALRET LPAEQDLTTK NVSIGIVGKD LEFTIYDDDD VSPFLEGLEE RP QRKAQPA QPADEPAEKA DEPMEH

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Macromolecule #6: Proteasome subunit alpha type-3

MacromoleculeName: Proteasome subunit alpha type-3 / type: protein_or_peptide / ID: 6 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 28.469252 KDa
SequenceString: MSSIGTGYDL SASTFSPDGR VFQVEYAMKA VENSSTAIGI RCKDGVVFGV EKLVLSKLYE EGSNKRLFNV DRHVGMAVAG LLADARSLA DIAREEASNF RSNFGYNIPL KHLADRVAMY VHAYTLYSAV RPFGCSFMLG SYSVNDGAQL YMIDPSGVSY G YWGCAIGK ...String:
MSSIGTGYDL SASTFSPDGR VFQVEYAMKA VENSSTAIGI RCKDGVVFGV EKLVLSKLYE EGSNKRLFNV DRHVGMAVAG LLADARSLA DIAREEASNF RSNFGYNIPL KHLADRVAMY VHAYTLYSAV RPFGCSFMLG SYSVNDGAQL YMIDPSGVSY G YWGCAIGK ARQAAKTEIE KLQMKEMTCR DIVKEVAKII YIVHDEVKDK AFELELSWVG ELTNGRHEIV PKDIREEAEK YA KESLKEE DESDDDNM

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Macromolecule #7: Proteasome subunit alpha type-6

MacromoleculeName: Proteasome subunit alpha type-6 / type: protein_or_peptide / ID: 7 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 27.432459 KDa
SequenceString: MSRGSSAGFD RHITIFSPEG RLYQVEYAFK AINQGGLTSV AVRGKDCAVI VTQKKVPDKL LDSSTVTHLF KITENIGCVM TGMTADSRS QVQRARYEAA NWKYKYGYEI PVDMLCKRIA DISQVYTQNA EMRPLGCCMI LIGIDEEQGP QVYKCDPAGY Y CGFKATAA ...String:
MSRGSSAGFD RHITIFSPEG RLYQVEYAFK AINQGGLTSV AVRGKDCAVI VTQKKVPDKL LDSSTVTHLF KITENIGCVM TGMTADSRS QVQRARYEAA NWKYKYGYEI PVDMLCKRIA DISQVYTQNA EMRPLGCCMI LIGIDEEQGP QVYKCDPAGY Y CGFKATAA GVKQTESTSF LEKKVKKKFD WTFEQTVETA ITCLSTVLSI DFKPSEIEVG VVTVENPKFR ILTEAEIDAH LV ALAERD

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Macromolecule #8: Proteasome subunit beta type-7

MacromoleculeName: Proteasome subunit beta type-7 / type: protein_or_peptide / ID: 8 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 30.000418 KDa
SequenceString: MAAVSVYAPP VGGFSFDNCR RNAVLEADFA KRGYKLPKVR KTGTTIAGVV YKDGIVLGAD TRATEGMVVA DKNCSKIHFI SPNIYCCGA GTAADTDMTT QLISSNLELH SLSTGRLPRV VTANRMLKQM LFRYQGYIGA ALVLGGVDVT GPHLYSIYPH G STDKLPYV ...String:
MAAVSVYAPP VGGFSFDNCR RNAVLEADFA KRGYKLPKVR KTGTTIAGVV YKDGIVLGAD TRATEGMVVA DKNCSKIHFI SPNIYCCGA GTAADTDMTT QLISSNLELH SLSTGRLPRV VTANRMLKQM LFRYQGYIGA ALVLGGVDVT GPHLYSIYPH G STDKLPYV TMGSGSLAAM AVFEDKFRPD MEEEEAKNLV SEAIAAGIFN DLGSGSNIDL CVISKNKLDF LRPYTVPNKK GT RLGRYRC EKGTTAVLTE KITPLEIEVL EETVQTMDTS

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Macromolecule #9: Proteasome subunit beta type-3

MacromoleculeName: Proteasome subunit beta type-3 / type: protein_or_peptide / ID: 9 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 22.972896 KDa
SequenceString: MSIMSYNGGA VMAMKGKNCV AIAADRRFGI QAQMVTTDFQ KIFPMGDRLY IGLAGLATDV QTVAQRLKFR LNLYELKEGR QIKPYTLMS MVANLLYEKR FGPYYTEPVI AGLDPKTFKP FICSLDLIGC PMVTDDFVVS GTCAEQMYGM CESLWEPNMD P DHLFETIS ...String:
MSIMSYNGGA VMAMKGKNCV AIAADRRFGI QAQMVTTDFQ KIFPMGDRLY IGLAGLATDV QTVAQRLKFR LNLYELKEGR QIKPYTLMS MVANLLYEKR FGPYYTEPVI AGLDPKTFKP FICSLDLIGC PMVTDDFVVS GTCAEQMYGM CESLWEPNMD P DHLFETIS QAMLNAVDRD AVSGMGVIVH IIEKDKITTR TLKARMD

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Macromolecule #10: Proteasome subunit beta type-2

MacromoleculeName: Proteasome subunit beta type-2 / type: protein_or_peptide / ID: 10 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 22.864277 KDa
SequenceString: MEYLIGIQGP DYVLVASDRV AASNIVQMKD DHDKMFKMSE KILLLCVGEA GDTVQFAEYI QKNVQLYKMR NGYELSPTAA ANFTRRNLA DCLRSRTPYH VNLLLAGYDE HEGPALYYMD YLAALAKAPF AAHGYGAFLT LSILDRYYTP TISRERAVEL L RKCLEELQ ...String:
MEYLIGIQGP DYVLVASDRV AASNIVQMKD DHDKMFKMSE KILLLCVGEA GDTVQFAEYI QKNVQLYKMR NGYELSPTAA ANFTRRNLA DCLRSRTPYH VNLLLAGYDE HEGPALYYMD YLAALAKAPF AAHGYGAFLT LSILDRYYTP TISRERAVEL L RKCLEELQ KRFILNLPTF SVRIIDKNGI HDLDNISFPK QGS

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Macromolecule #11: Proteasome subunit beta type-5

MacromoleculeName: Proteasome subunit beta type-5 / type: protein_or_peptide / ID: 11 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 28.510248 KDa
SequenceString: MALASVLERP LPVNQRGFFG LGGRADLLDL GPGSLSDGLS LAAPGWGVPE EPGIEMLHGT TTLAFKFRHG VIVAADSRAT AGAYIASQT VKKVIEINPY LLGTMAGGAA DCSFWERLLA RQCRIYELRN KERISVAAAS KLLANMVYQY KGMGLSMGTM I CGWDKRGP ...String:
MALASVLERP LPVNQRGFFG LGGRADLLDL GPGSLSDGLS LAAPGWGVPE EPGIEMLHGT TTLAFKFRHG VIVAADSRAT AGAYIASQT VKKVIEINPY LLGTMAGGAA DCSFWERLLA RQCRIYELRN KERISVAAAS KLLANMVYQY KGMGLSMGTM I CGWDKRGP GLYYVDSEGN RISGATFSVG SGSVYAYGVM DRGYSYDLEV EQAYDLARRA IYQATYRDAY SGGAVNLYHV RE DGWIRVS SDNVADLHEK YSGSTP

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Macromolecule #12: Proteasome subunit beta type-1

MacromoleculeName: Proteasome subunit beta type-1 / type: protein_or_peptide / ID: 12 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 26.522396 KDa
SequenceString: MLSSTAMYSA PGRDLGMEPH RAAGPLQLRF SPYVFNGGTI LAIAGEDFAI VASDTRLSEG FSIHTRDSPK CYKLTDKTVI GCSGFHGDC LTLTKIIEAR LKMYKHSNNK AMTTGAIAAM LSTILYSRRF FPYYVYNIIG GLDEEGKGAV YSFDPVGSYQ R DSFKAGGS ...String:
MLSSTAMYSA PGRDLGMEPH RAAGPLQLRF SPYVFNGGTI LAIAGEDFAI VASDTRLSEG FSIHTRDSPK CYKLTDKTVI GCSGFHGDC LTLTKIIEAR LKMYKHSNNK AMTTGAIAAM LSTILYSRRF FPYYVYNIIG GLDEEGKGAV YSFDPVGSYQ R DSFKAGGS ASAMLQPLLD NQVGFKNMQN VEHVPLSLDR AMRLVKDVFI SAAERDVYTG DALRICIVTK EGIREETVSL RK D

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Macromolecule #13: Proteasome subunit beta type-4

MacromoleculeName: Proteasome subunit beta type-4 / type: protein_or_peptide / ID: 13 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 29.231178 KDa
SequenceString: MEAFLGSRSG LWAGGPAPGQ FYRIPSTPDS FMDPASALYR GPITRTQNPM VTGTSVLGVK FEGGVVIAAD MLGSYGSLAR FRNISRIMR VNNSTMLGAS GDYADFQYLK QVLGQMVIDE ELLGDGHSYS PRAIHSWLTR AMYSRRSKMN PLWNTMVIGG Y ADGESFLG ...String:
MEAFLGSRSG LWAGGPAPGQ FYRIPSTPDS FMDPASALYR GPITRTQNPM VTGTSVLGVK FEGGVVIAAD MLGSYGSLAR FRNISRIMR VNNSTMLGAS GDYADFQYLK QVLGQMVIDE ELLGDGHSYS PRAIHSWLTR AMYSRRSKMN PLWNTMVIGG Y ADGESFLG YVDMLGVAYE APSLATGYGA YLAQPLLREV LEKQPVLSQT EARDLVERCM RVLYYRDARS YNRFQIATVT EK GVEIEGP LSTETNWDIA HMISGFE

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Macromolecule #14: Proteasome subunit beta type-6

MacromoleculeName: Proteasome subunit beta type-6 / type: protein_or_peptide / ID: 14 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 25.377652 KDa
SequenceString: MAATLLAARG AGPAPAWGPE AFTPDWESRE VSTGTTIMAV QFDGGVVLGA DSRTTTGSYI ANRVTDKLTP IHDRIFCCRS GSAADTQAV ADAVTYQLGF HSIELNEPPL VHTAASLFKE MCYRYREDLM AGIIIAGWDP QEGGQVYSVP MGGMMVRQSF A IGGSGSSY ...String:
MAATLLAARG AGPAPAWGPE AFTPDWESRE VSTGTTIMAV QFDGGVVLGA DSRTTTGSYI ANRVTDKLTP IHDRIFCCRS GSAADTQAV ADAVTYQLGF HSIELNEPPL VHTAASLFKE MCYRYREDLM AGIIIAGWDP QEGGQVYSVP MGGMMVRQSF A IGGSGSSY IYGYVDATYR EGMTKEECLQ FTANALALAM ERDGSSGGVI RLAAIAESGV ERQVLLGDQI PKFAVATLPP A

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Macromolecule #15: Proteasome activator complex subunit 2

MacromoleculeName: Proteasome activator complex subunit 2 / type: protein_or_peptide / ID: 15 / Number of copies: 8 / Enantiomer: LEVO
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 27.439633 KDa
SequenceString: MAKPCGVRLS GEARKQVEVF RQNLFQEAEE FLYRFLPQKI IYLNQLLQED SLNVADLTSL RAPLDIPIPD PPPKDDEMET DKQEKKEVH KCGFLPGNEK VLSLLALVKP EVWTLKEKCI LVITWIQHLI PKIEDGNDFG VAIQEKVLER VNAVKTKVEA F QTTISKYF ...String:
MAKPCGVRLS GEARKQVEVF RQNLFQEAEE FLYRFLPQKI IYLNQLLQED SLNVADLTSL RAPLDIPIPD PPPKDDEMET DKQEKKEVH KCGFLPGNEK VLSLLALVKP EVWTLKEKCI LVITWIQHLI PKIEDGNDFG VAIQEKVLER VNAVKTKVEA F QTTISKYF SERGDAVAKA SKETHVMDYR ALVHERDEAA YGELRAMVLD LRAFYAELYH IISSNLEKIV NPKGEEKPSM Y

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Macromolecule #16: Proteasome activator complex subunit 1

MacromoleculeName: Proteasome activator complex subunit 1 / type: protein_or_peptide / ID: 16 / Number of copies: 6 / Enantiomer: LEVO
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 28.768141 KDa
SequenceString: MAMLRVQPEA QAKVDVFRED LCTKTENLLG SYFPKKISEL DAFLKEPALN EANLSNLKAP LDIPVPDPVK EKEKEERKKQ QEKEDKDEK KKGEDEDKGP PCGPVNCNEK IVVLLQRLKP EIKDVIEQLN LVTTWLQLQI PRIEDGNNFG VAVQEKVFEL M TSLHTKLE ...String:
MAMLRVQPEA QAKVDVFRED LCTKTENLLG SYFPKKISEL DAFLKEPALN EANLSNLKAP LDIPVPDPVK EKEKEERKKQ QEKEDKDEK KKGEDEDKGP PCGPVNCNEK IVVLLQRLKP EIKDVIEQLN LVTTWLQLQI PRIEDGNNFG VAVQEKVFEL M TSLHTKLE GFHTQISKYF SERGDAVTKA AKQPHVGDYR QLVHELDEAE YRDIRLMVME IRNAYAVLYD IILKNFEKLK KP RGETKGM IY

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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: 7.2
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI POLARA 300
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 40.0 e/Å2
Experimental equipment
Model: Tecnai Polara / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 22946
FSC plot (resolution estimation)

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