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- EMDB-41993: Proteasome 20S Core Particle from Beta 3 D205 deletion -

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Open data


ID or keywords:

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Basic information

Entry
Database: EMDB / ID: EMD-41993
TitleProteasome 20S Core Particle from Beta 3 D205 deletion
Map dataMap of Proteasome 20S core particle from B3 D205 deletion
Sample
  • Complex: Proteasome 20S Core Particle from Beta 3 D205 deletion mutant
    • Protein or peptide: x 14 types
KeywordsProteasome / core particle / HYDROLASE
Function / homology
Function and homology information


proteasome core complex assembly / nuclear outer membrane-endoplasmic reticulum membrane network / Cross-presentation of soluble exogenous antigens (endosomes) / TNFR2 non-canonical NF-kB pathway / proteasomal ubiquitin-independent protein catabolic process / Ub-specific processing proteases / proteasome storage granule / endopeptidase activator activity / proteasome assembly / proteasome endopeptidase complex ...proteasome core complex assembly / nuclear outer membrane-endoplasmic reticulum membrane network / Cross-presentation of soluble exogenous antigens (endosomes) / TNFR2 non-canonical NF-kB pathway / proteasomal ubiquitin-independent protein catabolic process / Ub-specific processing proteases / proteasome storage granule / endopeptidase activator activity / proteasome assembly / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / proteasome core complex, alpha-subunit complex / threonine-type endopeptidase activity / Neutrophil degranulation / proteasome complex / proteasomal protein catabolic process / proteasome-mediated ubiquitin-dependent protein catabolic process / endopeptidase activity / mRNA binding / endoplasmic reticulum membrane / mitochondrion / nucleus / cytosol / cytoplasm
Similarity search - Function
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 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
Probable proteasome subunit alpha type-7 / Proteasome subunit alpha type-1 / Proteasome subunit beta type-4 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-2 / Proteasome subunit beta type-6 / Proteasome subunit beta type-2 / Proteasome subunit beta type-3 / Proteasome subunit beta type-5 / Proteasome subunit beta type-7 ...Probable proteasome subunit alpha type-7 / Proteasome subunit alpha type-1 / Proteasome subunit beta type-4 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-2 / Proteasome subunit beta type-6 / Proteasome subunit beta type-2 / Proteasome subunit beta type-3 / Proteasome subunit beta type-5 / Proteasome subunit beta type-7 / Proteasome subunit alpha type-5 / Proteasome subunit beta type-1 / Proteasome subunit alpha type-6 / Proteasome subunit alpha type-4
Similarity search - Component
Biological speciesSaccharomyces cerevisiae S288C (yeast)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.16 Å
AuthorsWalsh Jr RM / Rawson S / Velez B / Blickling M / Razi A / Hanna J
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)DP5-OD019800 United States
CitationJournal: Nat Struct Mol Biol / Year: 2024
Title: Mechanism of autocatalytic activation during proteasome assembly.
Authors: Benjamin Velez / Richard M Walsh / Shaun Rawson / Aida Razi / Lea Adams / Erignacio Fermin Perez / Fenglong Jiao / Marie Blickling / Tamayanthi Rajakumar / Darlene Fung / Lan Huang / John Hanna /
Abstract: Many large molecular machines are too elaborate to assemble spontaneously and are built through ordered pathways orchestrated by dedicated chaperones. During assembly of the core particle (CP) of the ...Many large molecular machines are too elaborate to assemble spontaneously and are built through ordered pathways orchestrated by dedicated chaperones. During assembly of the core particle (CP) of the proteasome, where protein degradation occurs, its six active sites are simultaneously activated via cleavage of N-terminal propeptides. Such activation is autocatalytic and coupled to fusion of two half-CP intermediates, which protects cells by preventing activation until enclosure of the active sites within the CP interior. Here we uncover key mechanistic aspects of autocatalytic activation, which proceeds through alignment of the β5 and β2 catalytic triad residues, respectively, with these triads being misaligned before fusion. This mechanism contrasts with most other zymogens, in which catalytic centers are preformed. Our data also clarify the mechanism by which individual subunits can be added in a precise, temporally ordered manner. This work informs two decades-old mysteries in the proteasome field, with broader implications for protease biology and multisubunit complex assembly.
History
DepositionSep 15, 2023-
Header (metadata) releaseApr 17, 2024-
Map releaseApr 17, 2024-
UpdateApr 24, 2024-
Current statusApr 24, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_41993.png

Downloads & links

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Map

FileDownload / File: emd_41993.map.gz / Format: CCP4 / Size: 169.2 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationMap of Proteasome 20S core particle from B3 D205 deletion
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.06 Å/pix.
x 354 pix.
= 375.24 Å		1.06 Å/pix.
x 354 pix.
= 375.24 Å		1.06 Å/pix.
x 354 pix.
= 375.24 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.06 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.34
Minimum - Maximum-2.3177032 - 4.360297
Average (Standard dev.)0.0037785515 (±0.13382459)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions354354354
Spacing354354354
CellA=B=C: 375.24 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: Half Map B of Proteasome 20S core particle from B3 D205 deletion

Fileemd_41993_half_map_1.map
AnnotationHalf Map B of Proteasome 20S core particle from B3 D205 deletion
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half Map A of Proteasome 20S core particle...

Fileemd_41993_half_map_2.map
AnnotationHalf Map A of Proteasome 20S core particle from B3 D205 deletionMap of Proteasome 20S core particle from B3 D205 deletion
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Proteasome 20S Core Particle from Beta 3 D205 deletion mutant

EntireName: Proteasome 20S Core Particle from Beta 3 D205 deletion mutant
Components
  • Complex: Proteasome 20S Core Particle from Beta 3 D205 deletion mutant
    • Protein or peptide: Proteasome subunit alpha type-5
    • Protein or peptide: Proteasome subunit alpha type-2
    • Protein or peptide: Proteasome subunit beta type-1PSMB1
    • Protein or peptide: Proteasome subunit alpha type-6
    • Protein or peptide: Proteasome subunit beta type-6
    • Protein or peptide: Proteasome subunit beta type-4PSMB4
    • Protein or peptide: Proteasome subunit alpha type-7
    • Protein or peptide: Proteasome subunit beta type-7
    • Protein or peptide: Proteasome subunit beta type-2PSMB2
    • Protein or peptide: Proteasome subunit beta type-5PSMB5
    • Protein or peptide: Proteasome subunit alpha type-3
    • Protein or peptide: Proteasome subunit alpha type-1
    • Protein or peptide: Proteasome subunit beta type-3PSMB3
    • Protein or peptide: Proteasome subunit alpha type-4

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Supramolecule #1: Proteasome 20S Core Particle from Beta 3 D205 deletion mutant

SupramoleculeName: Proteasome 20S Core Particle from Beta 3 D205 deletion mutant
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Details: D205 is terminal most residue in the Beta 3 subunit. The deletion of this residue causes an accumulation of assembly intermediates including the Preholo-Proteasome. Mature 20S particle still forms.
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 700 KDa

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Macromolecule #1: Proteasome subunit alpha type-5

MacromoleculeName: Proteasome subunit alpha type-5 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 28.649086 KDa
SequenceString: MFLTRSEYDR GVSTFSPEGR LFQVEYSLEA IKLGSTAIGI ATKEGVVLGV EKRATSPLLE SDSIEKIVEI DRHIGCAMSG LTADARSMI EHARTAAVTH NLYYDEDINV ESLTQSVCDL ALRFGEGASG EERLMSRPFG VALLIAGHDA DDGYQLFHAE P SGTFYRYN ...String:
MFLTRSEYDR GVSTFSPEGR LFQVEYSLEA IKLGSTAIGI ATKEGVVLGV EKRATSPLLE SDSIEKIVEI DRHIGCAMSG LTADARSMI EHARTAAVTH NLYYDEDINV ESLTQSVCDL ALRFGEGASG EERLMSRPFG VALLIAGHDA DDGYQLFHAE P SGTFYRYN AKAIGSGSEG AQAELLNEWH SSLTLKEAEL LVLKILKQVM EEKLDENNAQ LSCITKQDGF KIYDNEKTAE LI KELKEKE AAESPEEADV EMS

UniProtKB: Proteasome subunit alpha type-5

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Macromolecule #2: Proteasome subunit alpha type-2

MacromoleculeName: Proteasome subunit alpha type-2 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 27.191828 KDa
SequenceString: MTDRYSFSLT TFSPSGKLGQ IDYALTAVKQ GVTSLGIKAT NGVVIATEKK SSSPLAMSET LSKVSLLTPD IGAVYSGMGP DYRVLVDKS RKVAHTSYKR IYGEYPPTKL LVSEVAKIMQ EATQSGGVRP FGVSLLIAGH DEFNGFSLYQ VDPSGSYFPW K ATAIGKGS ...String:
MTDRYSFSLT TFSPSGKLGQ IDYALTAVKQ GVTSLGIKAT NGVVIATEKK SSSPLAMSET LSKVSLLTPD IGAVYSGMGP DYRVLVDKS RKVAHTSYKR IYGEYPPTKL LVSEVAKIMQ EATQSGGVRP FGVSLLIAGH DEFNGFSLYQ VDPSGSYFPW K ATAIGKGS VAAKTFLEKR WNDELELEDA IHIALLTLKE SVEGEFNGDT IELAIIGDEN PDLLGYTGIP TDKGPRFRKL TS QEINDRL EAL

UniProtKB: Proteasome subunit alpha type-2

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Macromolecule #3: Proteasome subunit beta type-1

MacromoleculeName: Proteasome subunit beta type-1 / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 23.573604 KDa
SequenceString: MNGIQVDINR LKKGEVSLGT SIMAVTFKDG VILGADSRTT TGAYIANRVT DKLTRVHDKI WCCRSGSAAD TQAIADIVQY HLELYTSQY GTPSTETAAS VFKELCYENK DNLTAGIIVA GYDDKNKGEV YTIPLGGSVH KLPYAIAGSG STFIYGYCDK N FRENMSKE ...String:
MNGIQVDINR LKKGEVSLGT SIMAVTFKDG VILGADSRTT TGAYIANRVT DKLTRVHDKI WCCRSGSAAD TQAIADIVQY HLELYTSQY GTPSTETAAS VFKELCYENK DNLTAGIIVA GYDDKNKGEV YTIPLGGSVH KLPYAIAGSG STFIYGYCDK N FRENMSKE ETVDFIKHSL SQAIKWDGSS GGVIRMVVLT AAGVERLIFY PDEYEQL

UniProtKB: Proteasome subunit beta type-1

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Macromolecule #4: Proteasome subunit alpha type-6

MacromoleculeName: Proteasome subunit alpha type-6 / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 25.634 KDa
SequenceString: MFRNNYDGDT VTFSPTGRLF QVEYALEAIK QGSVTVGLRS NTHAVLVALK RNADELSSYQ KKIIKCDEHM GLSLAGLAPD ARVLSNYLR QQCNYSSLVF NRKLAVERAG HLLCDKAQKN TQSYGGRPYG VGLLIIGYDK SGAHLLEFQP SGNVTELYGT A IGARSQGA ...String:
MFRNNYDGDT VTFSPTGRLF QVEYALEAIK QGSVTVGLRS NTHAVLVALK RNADELSSYQ KKIIKCDEHM GLSLAGLAPD ARVLSNYLR QQCNYSSLVF NRKLAVERAG HLLCDKAQKN TQSYGGRPYG VGLLIIGYDK SGAHLLEFQP SGNVTELYGT A IGARSQGA KTYLERTLDT FIKIDGNPDE LIKAGVEAIS QSLRDESLTV DNLSIAIVGK DTPFTIYDGE AVAKYI

UniProtKB: Proteasome subunit alpha type-6

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Macromolecule #5: Proteasome subunit beta type-6

MacromoleculeName: Proteasome subunit beta type-6 / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 26.905076 KDa
SequenceString: MATIASEYSS EASNTPIEHQ FNPYGDNGGT ILGIAGEDFA VLAGDTRNIT DYSINSRYEP KVFDCGDNIV MSANGFAADG DALVKRFKN SVKWYHFDHN DKKLSINSAA RNIQHLLYGK RFFPYYVHTI IAGLDEDGKG AVYSFDPVGS YEREQCRAGG A AASLIMPF ...String:
MATIASEYSS EASNTPIEHQ FNPYGDNGGT ILGIAGEDFA VLAGDTRNIT DYSINSRYEP KVFDCGDNIV MSANGFAADG DALVKRFKN SVKWYHFDHN DKKLSINSAA RNIQHLLYGK RFFPYYVHTI IAGLDEDGKG AVYSFDPVGS YEREQCRAGG A AASLIMPF LDNQVNFKNQ YEPGTNGKVK KPLKYLSVEE VIKLVRDSFT SATERHIQVG DGLEILIVTK DGVRKEFYEL KR D

UniProtKB: Proteasome subunit beta type-6

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Macromolecule #6: Proteasome subunit beta type-4

MacromoleculeName: Proteasome subunit beta type-4 / type: protein_or_peptide / ID: 6 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 22.545676 KDa
SequenceString: MDIILGIRVQ DSVILASSKA VTRGISVLKD SDDKTRQLSP HTLMSFAGEA GDTVQFAEYI QANIQLYSIR EDYELSPQAV SSFVRQELA KSIRSRRPYQ VNVLIGGYDK KKNKPELYQI DYLGTKVELP YGAHGYSGFY TFSLLDHHYR PDMTTEEGLD L LKLCVQEL ...String:
MDIILGIRVQ DSVILASSKA VTRGISVLKD SDDKTRQLSP HTLMSFAGEA GDTVQFAEYI QANIQLYSIR EDYELSPQAV SSFVRQELA KSIRSRRPYQ VNVLIGGYDK KKNKPELYQI DYLGTKVELP YGAHGYSGFY TFSLLDHHYR PDMTTEEGLD L LKLCVQEL EKRMPMDFKG VIVKIVDKDG IRQVDDFQAQ

UniProtKB: Proteasome subunit beta type-4

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Macromolecule #7: Proteasome subunit alpha type-7

MacromoleculeName: Proteasome subunit alpha type-7 / type: protein_or_peptide / ID: 7 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 31.575068 KDa
SequenceString: MTSIGTGYDL SNSVFSPDGR NFQVEYAVKA VENGTTSIGI KCNDGVVFAV EKLITSKLLV PQKNVKIQVV DRHIGCVYSG LIPDGRHLV NRGREEAASF KKLYKTPIPI PAFADRLGQY VQAHTLYNSV RPFGVSTIFG GVDKNGAHLY MLEPSGSYWG Y KGAATGKG ...String:
MTSIGTGYDL SNSVFSPDGR NFQVEYAVKA VENGTTSIGI KCNDGVVFAV EKLITSKLLV PQKNVKIQVV DRHIGCVYSG LIPDGRHLV NRGREEAASF KKLYKTPIPI PAFADRLGQY VQAHTLYNSV RPFGVSTIFG GVDKNGAHLY MLEPSGSYWG Y KGAATGKG RQSAKAELEK LVDHHPEGLS AREAVKQAAK IIYLAHEDNK EKDFELEISW CSLSETNGLH KFVKGDLLQE AI DFAQKEI NGDDDEDEDD SDNVMSSDDE NAPVATNANA TTDQEGDIHL E

UniProtKB: Probable proteasome subunit alpha type-7

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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: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 29.471289 KDa
SequenceString: MNHDPFSWGR PADSTYGAYN TQIANAGASP MVNTQQPIVT GTSVISMKYD NGVIIAADNL GSYGSLLRFN GVERLIPVGD NTVVGISGD ISDMQHIERL LKDLVTENAY DNPLADAEEA LEPSYIFEYL ATVMYQRRSK MNPLWNAIIV AGVQSNGDQF L RYVNLLGV ...String:
MNHDPFSWGR PADSTYGAYN TQIANAGASP MVNTQQPIVT GTSVISMKYD NGVIIAADNL GSYGSLLRFN GVERLIPVGD NTVVGISGD ISDMQHIERL LKDLVTENAY DNPLADAEEA LEPSYIFEYL ATVMYQRRSK MNPLWNAIIV AGVQSNGDQF L RYVNLLGV TYSSPTLATG FGAHMANPLL RKVVDRESDI PKTTVQVAEE AIVNAMRVLY YRDARSSRNF SLAIIDKNTG LT FKKNLQV ENMKWDFAKD IKGYGTQKI

UniProtKB: Proteasome subunit beta type-7

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Macromolecule #9: Proteasome subunit beta type-2

MacromoleculeName: Proteasome subunit beta type-2 / type: protein_or_peptide / ID: 9 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 28.299889 KDa
SequenceString: MAGLSFDNYQ RNNFLAENSH TQPKATSTGT TIVGVKFNNG VVIAADTRST QGPIVADKNC AKLHRISPKI WCAGAGTAAD TEAVTQLIG SNIELHSLYT SREPRVVSAL QMLKQHLFKY QGHIGAYLIV AGVDPTGSHL FSIHAHGSTD VGYYLSLGSG S LAAMAVLE ...String:
MAGLSFDNYQ RNNFLAENSH TQPKATSTGT TIVGVKFNNG VVIAADTRST QGPIVADKNC AKLHRISPKI WCAGAGTAAD TEAVTQLIG SNIELHSLYT SREPRVVSAL QMLKQHLFKY QGHIGAYLIV AGVDPTGSHL FSIHAHGSTD VGYYLSLGSG S LAAMAVLE SHWKQDLTKE EAIKLASDAI QAGIWNDLGS GSNVDVCVME IGKDAEYLRN YLTPNVREEK QKSYKFPRGT TA VLKESIV NICDIQEEQV DITA

UniProtKB: Proteasome subunit beta type-2

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Macromolecule #10: Proteasome subunit beta type-5

MacromoleculeName: Proteasome subunit beta type-5 / type: protein_or_peptide / ID: 10 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 31.670539 KDa
SequenceString: MQAIADSFSV PNRLVKELQY DNEQNLESDF VTGASQFQRL APSLTVPPIA SPQQFLRAHT DDSRNPDCKI KIAHGTTTLA FRFQGGIIV AVDSRATAGN WVASQTVKKV IEINPFLLGT MAGGAADCQF WETWLGSQCR LHELREKERI SVAAASKILS N LVYQYKGA ...String:
MQAIADSFSV PNRLVKELQY DNEQNLESDF VTGASQFQRL APSLTVPPIA SPQQFLRAHT DDSRNPDCKI KIAHGTTTLA FRFQGGIIV AVDSRATAGN WVASQTVKKV IEINPFLLGT MAGGAADCQF WETWLGSQCR LHELREKERI SVAAASKILS N LVYQYKGA GLSMGTMICG YTRKEGPTIY YVDSDGTRLK GDIFCVGSGQ TFAYGVLDSN YKWDLSVEDA LYLGKRSILA AA HRDAYSG GSVNLYHVTE DGWIYHGNHD VGELFWKVKE EEGSFNNVIG

UniProtKB: Proteasome subunit beta type-5

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Macromolecule #11: Proteasome subunit alpha type-3

MacromoleculeName: Proteasome subunit alpha type-3 / type: protein_or_peptide / ID: 11 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 28.74823 KDa
SequenceString: MGSRRYDSRT TIFSPEGRLY QVEYALESIS HAGTAIGIMA SDGIVLAAER KVTSTLLEQD TSTEKLYKLN DKIAVAVAGL TADAEILIN TARIHAQNYL KTYNEDIPVE ILVRRLSDIK QGYTQHGGLR PFGVSFIYAG YDDRYGYQLY TSNPSGNYTG W KAISVGAN ...String:
MGSRRYDSRT TIFSPEGRLY QVEYALESIS HAGTAIGIMA SDGIVLAAER KVTSTLLEQD TSTEKLYKLN DKIAVAVAGL TADAEILIN TARIHAQNYL KTYNEDIPVE ILVRRLSDIK QGYTQHGGLR PFGVSFIYAG YDDRYGYQLY TSNPSGNYTG W KAISVGAN TSAAQTLLQM DYKDDMKVDD AIELALKTLS KTTDSSALTY DRLEFATIRK GANDGEVYQK IFKPQEIKDI LV KTGITKK DEDEEADEDM K

UniProtKB: Proteasome subunit alpha type-3

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Macromolecule #12: Proteasome subunit alpha type-1

MacromoleculeName: Proteasome subunit alpha type-1 / type: protein_or_peptide / ID: 12 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 28.03383 KDa
SequenceString: MSGAAAASAA GYDRHITIFS PEGRLYQVEY AFKATNQTNI NSLAVRGKDC TVVISQKKVP DKLLDPTTVS YIFCISRTIG MVVNGPIPD ARNAALRAKA EAAEFRYKYG YDMPCDVLAK RMANLSQIYT QRAYMRPLGV ILTFVSVDEE LGPSIYKTDP A GYYVGYKA ...String:
MSGAAAASAA GYDRHITIFS PEGRLYQVEY AFKATNQTNI NSLAVRGKDC TVVISQKKVP DKLLDPTTVS YIFCISRTIG MVVNGPIPD ARNAALRAKA EAAEFRYKYG YDMPCDVLAK RMANLSQIYT QRAYMRPLGV ILTFVSVDEE LGPSIYKTDP A GYYVGYKA TATGPKQQEI TTNLENHFKK SKIDHINEES WEKVVEFAIT HMIDALGTEF SKNDLEVGVA TKDKFFTLSA EN IEERLVA IAEQD

UniProtKB: Proteasome subunit alpha type-1

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Macromolecule #13: Proteasome subunit beta type-3

MacromoleculeName: Proteasome subunit beta type-3 / type: protein_or_peptide / ID: 13 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 22.512754 KDa
SequenceString: MSDPSSINGG IVVAMTGKDC VAIACDLRLG SQSLGVSNKF EKIFHYGHVF LGITGLATDV TTLNEMFRYK TNLYKLKEER AIEPETFTQ LVSSSLYERR FGPYFVGPVV AGINSKSGKP FIAGFDLIGC IDEAKDFIVS GTASDQLFGM CESLYEPNLE P EDLFETIS ...String:
MSDPSSINGG IVVAMTGKDC VAIACDLRLG SQSLGVSNKF EKIFHYGHVF LGITGLATDV TTLNEMFRYK TNLYKLKEER AIEPETFTQ LVSSSLYERR FGPYFVGPVV AGINSKSGKP FIAGFDLIGC IDEAKDFIVS GTASDQLFGM CESLYEPNLE P EDLFETIS QALLNAADRD ALSGWGAVVY IIKKDEVVKR YLKMRQ

UniProtKB: Proteasome subunit beta type-3

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Macromolecule #14: Proteasome subunit alpha type-4

MacromoleculeName: Proteasome subunit alpha type-4 / type: protein_or_peptide / ID: 14 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast) / Strain: ATCC 204508 / S288c
Molecular weightTheoretical: 28.478111 KDa
SequenceString: MSGYDRALSI FSPDGHIFQV EYALEAVKRG TCAVGVKGKN CVVLGCERRS TLKLQDTRIT PSKVSKIDSH VVLSFSGLNA DSRILIEKA RVEAQSHRLT LEDPVTVEYL TRYVAGVQQR YTQSGGVRPF GVSTLIAGFD PRDDEPKLYQ TEPSGIYSSW S AQTIGRNS ...String:
MSGYDRALSI FSPDGHIFQV EYALEAVKRG TCAVGVKGKN CVVLGCERRS TLKLQDTRIT PSKVSKIDSH VVLSFSGLNA DSRILIEKA RVEAQSHRLT LEDPVTVEYL TRYVAGVQQR YTQSGGVRPF GVSTLIAGFD PRDDEPKLYQ TEPSGIYSSW S AQTIGRNS KTVREFLEKN YDRKEPPATV EECVKLTVRS LLEVVQTGAK NIEITVVKPD SDIVALSSEE INQYVTQIEQ EK QEQQEQD KKKKSNH

UniProtKB: Proteasome subunit alpha type-4

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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

Concentration4.48 mg/mL
BufferpH: 7.5
Component:
ConcentrationNameFormula
50.0 mMTris Buffer
1.0 mMEDTAEthylenediaminetetraacetic acid
100.0 mMSodium ChlorideNaClSodium chloride

Details: Fluorinated Fos-Choline was added immediately prior to deposition on a grid for plunge freezing.
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 295.15 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Calibrated magnification: 47169 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: 2.2 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 81000
Specialist opticsEnergy filter - Name: GIF Bioquantum / Energy filter - Slit width: 25 eV
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 7461 / Average exposure time: 3.995 sec. / Average electron dose: 57.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 1146597
Startup modelType of model: INSILICO MODEL
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 4.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. v3.3.2)
Final reconstructionAlgorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 2.16 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. v3.3.2) / Number images used: 240235
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

8t08


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: AB INITIO MODEL
Output model

PDB-8u7u:
Proteasome 20S Core Particle from Beta 3 D205 deletion

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