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- EMDB-72277: Cryo-EM map of Plasmodium falciparum 20S proteasome bound to an a... -

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Basic information

Entry
Database: EMDB / ID: EMD-72277
TitleCryo-EM map of Plasmodium falciparum 20S proteasome bound to an asparagine-ethylenediamine based inhibitor TDI6245
Map data
Sample
  • Complex: Complex of Plasmodium falciparum 20S with inhibitor TDI-6245
    • Protein or peptide: x 14 types
  • Ligand: x 1 types
KeywordsPlasmodium falciparum antimalarial proteasome inhibitors / HYDROLASE
Function / homology
Function and homology information


proteasome core complex / proteasome core complex, beta-subunit complex / threonine-type endopeptidase activity / proteasome core complex, alpha-subunit complex / : / proteasomal protein catabolic process / peptidase activity / ubiquitin-dependent protein catabolic process / proteasome-mediated ubiquitin-dependent protein catabolic process / nucleus / cytoplasm
Similarity search - Function
Proteasome subunit alpha 1 / Proteasome subunit beta 4 / Proteasome subunit beta 2 / Proteasome beta 3 subunit / Proteasome subunit alpha5 / Proteasome subunit alpha6 / Proteasome beta-type subunits signature. / Peptidase T1A, proteasome beta-subunit / Proteasome beta-type subunit, conserved site / Proteasome subunit A N-terminal signature ...Proteasome subunit alpha 1 / Proteasome subunit beta 4 / Proteasome subunit beta 2 / Proteasome beta 3 subunit / Proteasome subunit alpha5 / Proteasome subunit alpha6 / 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 B-type subunit / Proteasome beta-type subunit profile. / : / Proteasome alpha-type subunit / Proteasome alpha-type subunit profile. / Proteasome subunit / Proteasome, subunit alpha/beta / Nucleophile aminohydrolases, N-terminal
Similarity search - Domain/homology
Proteasome subunit alpha type / Proteasome subunit alpha type-2 / Proteasome subunit alpha type / Proteasome subunit beta / Proteasome subunit beta / Proteasome subunit beta / Uncharacterized protein / Proteasome alpha-type subunits domain-containing protein / Proteasome alpha-type subunits domain-containing protein / Proteasome subunit beta ...Proteasome subunit alpha type / Proteasome subunit alpha type-2 / Proteasome subunit alpha type / Proteasome subunit beta / Proteasome subunit beta / Proteasome subunit beta / Uncharacterized protein / Proteasome alpha-type subunits domain-containing protein / Proteasome alpha-type subunits domain-containing protein / Proteasome subunit beta / Proteasome alpha-type subunits domain-containing protein / Proteasome subunit beta / Proteasome subunit beta / Proteasome subunit alpha type
Similarity search - Component
Biological speciesPlasmodium falciparum (malaria parasite P. falciparum)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.86 Å
AuthorsHsu HC / Li H
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R21AI123794 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI143714 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI177635 United States
CitationJournal: To Be Published
Title: Structure-activity relationship study of antimalarial asparagine derived proteasome inhibitors
Authors: Zhang H / Hsu HC / Zhan W / Hara R / Visone J / Imaeda T / Okamoto R / Fajtova P / Sato K / Michino M / Garg S / Kreutzfeld O / Tumwebaze P / Orena S / Okitwi M / Aso K / Cooper R / ...Authors: Zhang H / Hsu HC / Zhan W / Hara R / Visone J / Imaeda T / Okamoto R / Fajtova P / Sato K / Michino M / Garg S / Kreutzfeld O / Tumwebaze P / Orena S / Okitwi M / Aso K / Cooper R / Rosenthal PJ / Meinke PT / Foley M / ODonoghue AJ / Li H / Kirkman LA / Lin G
History
DepositionAug 22, 2025-
Header (metadata) releaseJul 29, 2026-
Map releaseJul 29, 2026-
UpdateJul 29, 2026-
Current statusJul 29, 2026Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_72277.png

Downloads & links

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Map

FileDownload / File: emd_72277.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 384 pix.
= 317.952 Å		0.83 Å/pix.
x 384 pix.
= 317.952 Å		0.83 Å/pix.
x 384 pix.
= 317.952 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.828 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.3
Minimum - Maximum-1.2457457 - 2.1566653
Average (Standard dev.)0.003208936 (±0.08950908)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 317.952 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_72277_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_72277_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_72277_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Complex of Plasmodium falciparum 20S with inhibitor TDI-6245

EntireName: Complex of Plasmodium falciparum 20S with inhibitor TDI-6245
Components
  • Complex: Complex of Plasmodium falciparum 20S with inhibitor TDI-6245
    • Protein or peptide: Proteasome subunit alpha type-6
    • Protein or peptide: Proteasome subunit alpha type-2
    • Protein or peptide: Proteasome subunit alpha type
    • Protein or peptide: Proteasome subunit alpha type
    • Protein or peptide: Proteasome subunit alpha type
    • Protein or peptide: Proteasome subunit alpha type-1
    • Protein or peptide: Proteasome subunit alpha type-3
    • Protein or peptide: Proteasome subunit beta type-6
    • Protein or peptide: Proteasome subunit beta
    • Protein or peptide: Proteasome subunit beta
    • Protein or peptide: Proteasome subunit beta
    • Protein or peptide: Proteasome subunit beta
    • Protein or peptide: Proteasome subunit beta
    • Protein or peptide: Proteasome subunit beta
  • Ligand: N~4~-tert-butyl-N~2~-(4-methylbenzene-1-sulfonyl)-N~1~-[2-(1-oxo-1,3-dihydro-2H-isoindol-2-yl)ethyl]-L-aspartamide

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Supramolecule #1: Complex of Plasmodium falciparum 20S with inhibitor TDI-6245

SupramoleculeName: Complex of Plasmodium falciparum 20S with inhibitor TDI-6245
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#14
Details: recombinant Plasmodium falciparum 20S complexed with inhibitor TDI-6245
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 700 KDa

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Macromolecule #1: Proteasome subunit alpha type-6

MacromoleculeName: Proteasome subunit alpha type-6 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 29.531656 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MVRPSQSMYD RHLTIFSPDG NLYQIEYAIK AVKNTNITSV GVKGENCAVI ISQKKMATQY ISQDKLLDYN NITNIYNITD EIGCSMVGM PGDCLSMVYK ARSEASEFLY SNGYNVNAET LCRNICDKIQ VYTQHAYMRL HACSGMIIGI DENNKPELFK F DPSGFCAG ...String:
MVRPSQSMYD RHLTIFSPDG NLYQIEYAIK AVKNTNITSV GVKGENCAVI ISQKKMATQY ISQDKLLDYN NITNIYNITD EIGCSMVGM PGDCLSMVYK ARSEASEFLY SNGYNVNAET LCRNICDKIQ VYTQHAYMRL HACSGMIIGI DENNKPELFK F DPSGFCAG YRACVIGNKE QESISVLERL LEKRKKKIQQ ETIDEDIRNT TILAIEALQT ILAFDLKASE IEVAIVSTKN RN FTQISEK EIDNYLTYIA ERD

UniProtKB: Proteasome alpha-type subunits domain-containing protein

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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
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 26.556391 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MADGEYSFSL TTFSPTGKLV QIEYALNRVS SSSPALGIRA KNGVIIATEK KSPNELIEEN SIFKIQQISE HIGIVYAGMP GDFRVLLKR ARKEAIRYSL QYGSEILVKE LVKIIASIVQ EFTQTGGVRP FGLSLLICGV DVYGYHLYQI DPSGCYFNWM A TCVGKDYQ ...String:
MADGEYSFSL TTFSPTGKLV QIEYALNRVS SSSPALGIRA KNGVIIATEK KSPNELIEEN SIFKIQQISE HIGIVYAGMP GDFRVLLKR ARKEAIRYSL QYGSEILVKE LVKIIASIVQ EFTQTGGVRP FGLSLLICGV DVYGYHLYQI DPSGCYFNWM A TCVGKDYQ NNMSFLEKRY NKDIEIEDAI HTAILTLKES YEGVLNEKNI EIGVAYDNKP FKILTQNEIK DYLIEIE

UniProtKB: Proteasome subunit alpha type-2

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Macromolecule #3: Proteasome subunit alpha type

MacromoleculeName: Proteasome subunit alpha type / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 27.977664 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MARRYDSRTT TFSPEGRLYQ VEYALEAINN ASITIGLITK DGVILGADKV FISKLIDKAN NYEKIYKIDK HIFCGVAGLN ADANILINQ SRLYAQRYLY NYNEVQPVSQ LVVQICDIKQ SYTQYGGLRP YGVSFLIGGY DTKDGYQLYH TDPSGNYSGW F ATAIGTNN ...String:
MARRYDSRTT TFSPEGRLYQ VEYALEAINN ASITIGLITK DGVILGADKV FISKLIDKAN NYEKIYKIDK HIFCGVAGLN ADANILINQ SRLYAQRYLY NYNEVQPVSQ LVVQICDIKQ SYTQYGGLRP YGVSFLIGGY DTKDGYQLYH TDPSGNYSGW F ATAIGTNN LTASSVLKQE WKNDMTLEEG LLLALKTLAK STDTEIPKSE KIELAYLTNK DGEVYQKYLT EKEIEELIKL YT QKYIKE

UniProtKB: Proteasome subunit alpha type

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Macromolecule #4: Proteasome subunit alpha type

MacromoleculeName: Proteasome subunit alpha type / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 27.263285 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSYDRAITVF SPDGHLLQVE HALEAVKKGG CAVAIKSSNF AVLAVEKKNI PKLQNPKTTE KLIKLDEHNC LAFAGLNADA RVLVNKTRL ECQRYYLNMD EPAPVDYIAK YVAKVQQKFT HRGGVRPFGI ATLIAGFKNN KEICIYQTEP SGIYAAWKAQ A IGKNAKIV ...String:
MSYDRAITVF SPDGHLLQVE HALEAVKKGG CAVAIKSSNF AVLAVEKKNI PKLQNPKTTE KLIKLDEHNC LAFAGLNADA RVLVNKTRL ECQRYYLNMD EPAPVDYIAK YVAKVQQKFT HRGGVRPFGI ATLIAGFKNN KEICIYQTEP SGIYAAWKAQ A IGKNAKIV QEFLEKNYQE NMEQKDCIFL ALKAIFEVVE LSSKNVEVAL LTEKDLTFIE EQEINSMVEL IDQERTKNNE QN E

UniProtKB: Proteasome subunit alpha type

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Macromolecule #5: Proteasome subunit alpha type

MacromoleculeName: Proteasome subunit alpha type / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 28.417367 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MFSTRSEYDR GVNTFSPEGR LFQVEYALGA IKLGSTAVGI CVNDGVILAS ERRISSTLIE KDSVEKLLSI DDHIGCAMSG LMADARTLI DYARVECNHY KFIYNENINI KSCVELISEL ALDFSNLSDS KRKKIMSRPF GVALLIGGVD KNGPCLWYTE P SGTNTRFS ...String:
MFSTRSEYDR GVNTFSPEGR LFQVEYALGA IKLGSTAVGI CVNDGVILAS ERRISSTLIE KDSVEKLLSI DDHIGCAMSG LMADARTLI DYARVECNHY KFIYNENINI KSCVELISEL ALDFSNLSDS KRKKIMSRPF GVALLIGGVD KNGPCLWYTE P SGTNTRFS AASIGSAQEG AELLLQENYK KDMTFEQAEI LALTVLRQVM EDKLSTSNVE ICAIKKSDQT FYKYNTDDIS RI IDVLPSP VYPTIDMTA

UniProtKB: Proteasome subunit alpha type

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Macromolecule #6: Proteasome subunit alpha type-1

MacromoleculeName: Proteasome subunit alpha type-1 / type: protein_or_peptide / ID: 6 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 28.742584 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MYRNLYDTDN IIYSPEGRLY QVEYASEAIK QGTCAVAIKS KDYVVVSGLK KCISKLSFPQ EKIFKIDDYI GISMSGITSD AKVLTKFMQ NECLSHKFLY NENINIESLV RSVADKYQKN TQKSSKRAFG VGLMIAAYHN EPCIFETRPN GSYFEYDALS F GARSHASK ...String:
MYRNLYDTDN IIYSPEGRLY QVEYASEAIK QGTCAVAIKS KDYVVVSGLK KCISKLSFPQ EKIFKIDDYI GISMSGITSD AKVLTKFMQ NECLSHKFLY NENINIESLV RSVADKYQKN TQKSSKRAFG VGLMIAAYHN EPCIFETRPN GSYFEYDALS F GARSHASK TYLEKNLHLF EECSLEELIL HCLKALKCSL SSESELTISN TALAVVGKNH PWQEISSLQL EEYLSKVKMD AE QEQVEEN VQNEAN

UniProtKB: Proteasome alpha-type subunits domain-containing protein

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Macromolecule #7: Proteasome subunit alpha type-3

MacromoleculeName: Proteasome subunit alpha type-3 / type: protein_or_peptide / ID: 7 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 29.324295 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MAGLSAGYDL SVSTFSPDGR LYQVEYIYKS INNNNTALCL ECKDGIICCC INSNMDKNKM IKKNSYNRIY HVNNNIIITY SGFDGDARN IIDRARSEAN TYYYNFHTNI PLHILVNRIS LYIHAYTLYW HMRPFAASII ISSFNEKDKG DIYCIEPNGA C YKYSGIVI ...String:
MAGLSAGYDL SVSTFSPDGR LYQVEYIYKS INNNNTALCL ECKDGIICCC INSNMDKNKM IKKNSYNRIY HVNNNIIITY SGFDGDARN IIDRARSEAN TYYYNFHTNI PLHILVNRIS LYIHAYTLYW HMRPFAASII ISSFNEKDKG DIYCIEPNGA C YKYSGIVI GKNKEMFKTE IEKKDYKDIN VRDAIEDIYK FILTSDDHMN KNNLQNLVNF SWICKESSYE FQNIHEEILT PA LNKAVEY IEKLN

UniProtKB: Proteasome alpha-type subunits domain-containing protein

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Macromolecule #8: Proteasome subunit beta type-6

MacromoleculeName: Proteasome subunit beta type-6 / type: protein_or_peptide / ID: 8 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 29.143936 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: TTIIGIIYDN GVMLACDSRT SSGTFISNKC SRKINRINEN LYVCRSGASA HSQKIIEIIK HYCVSMKNEN RKKGRFHEGE TIYDETTYD EEIDIDSINY LDYNNNNDNN LVTKNKYFYE DKFNDYNPLV ENVAHITKKI IYTNNNFLSC ALIFGGYDKI K KQQLYAVN ...String:
TTIIGIIYDN GVMLACDSRT SSGTFISNKC SRKINRINEN LYVCRSGASA HSQKIIEIIK HYCVSMKNEN RKKGRFHEGE TIYDETTYD EEIDIDSINY LDYNNNNDNN LVTKNKYFYE DKFNDYNPLV ENVAHITKKI IYTNNNFLSC ALIFGGYDKI K KQQLYAVN LNGSIIEKHD FAVSGSGSIY IQSYLQDKYK KFMTKKECFN LILNCVKYAM HNDNSSGGLI RIVNITKSFV EE FTVVNTQ MNFQY

UniProtKB: Uncharacterized protein

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Macromolecule #9: Proteasome subunit beta

MacromoleculeName: Proteasome subunit beta / type: protein_or_peptide / ID: 9 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 25.104885 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: TTICGLVCQN AVILGADTRA TEGPIVADKN CSKLHYISKN IWCAGAGVAG DLEHTTLWLQ HNVELHRLNT NTQPRVSMCV SRLTQELFK YQGYKVCAIV LGGVDVNGPQ LYGIHPHGSS CLLPFTALGS GSLNAMAVLE AKYRDNMTIE EGKNLVCEAI C AGIFNDLG ...String:
TTICGLVCQN AVILGADTRA TEGPIVADKN CSKLHYISKN IWCAGAGVAG DLEHTTLWLQ HNVELHRLNT NTQPRVSMCV SRLTQELFK YQGYKVCAIV LGGVDVNGPQ LYGIHPHGSS CLLPFTALGS GSLNAMAVLE AKYRDNMTIE EGKNLVCEAI C AGIFNDLG SGGNVDICVI TKDSYQHIRP YKEPNMRLYH LPHPTIYPKG TTPILSEKIE YIKKFISVED A

UniProtKB: Proteasome subunit beta

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Macromolecule #10: Proteasome subunit beta

MacromoleculeName: Proteasome subunit beta / type: protein_or_peptide / ID: 10 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 24.533131 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MGSIYNYNGG CVLGMSGSNC VAIACDLRLG ANTFTTVSTK FSKIFKMNNN VYVGLSGLAT DIQTLYEILR YRVNLYEVRQ DAEMDVECF ANMLSSILYS NRFSPYFVNP IVVGFKLKHY VDEEGEKKVN YEPYLTAYDL IGAKCETRDF VVNGVTSEQL F GMCESLYV ...String:
MGSIYNYNGG CVLGMSGSNC VAIACDLRLG ANTFTTVSTK FSKIFKMNNN VYVGLSGLAT DIQTLYEILR YRVNLYEVRQ DAEMDVECF ANMLSSILYS NRFSPYFVNP IVVGFKLKHY VDEEGEKKVN YEPYLTAYDL IGAKCETRDF VVNGVTSEQL F GMCESLYV KDQDENGLFE TISQCLLSAL DRDCISGWGA EVLVLTPEKI IKKKLKARMD

UniProtKB: Proteasome subunit beta

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Macromolecule #11: Proteasome subunit beta

MacromoleculeName: Proteasome subunit beta / type: protein_or_peptide / ID: 11 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 22.889105 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MDTLIGLRGN NFVVLAADTY SINSIIKLKN DDNTKFYDIH GNKCLLLGGS IGDRLQFGEF IRKNVHLYQY QNNTDMFVKS FAFFTRKNL AYYLRRNPFE VNCLIAGYDK KDGYQLYWCD YLSNMDSVNK GAHGYGAYLV SAILDKYYHE NLTVDEALDI F KLCFEELK ...String:
MDTLIGLRGN NFVVLAADTY SINSIIKLKN DDNTKFYDIH GNKCLLLGGS IGDRLQFGEF IRKNVHLYQY QNNTDMFVKS FAFFTRKNL AYYLRRNPFE VNCLIAGYDK KDGYQLYWCD YLSNMDSVNK GAHGYGAYLV SAILDKYYHE NLTVDEALDI F KLCFEELK KRFLLTQINY ELRIMYDNKV ETQYVTV

UniProtKB: Proteasome subunit beta

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Macromolecule #12: Proteasome subunit beta

MacromoleculeName: Proteasome subunit beta / type: protein_or_peptide / ID: 12 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 23.620646 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: TTTLAFKFKD GIIVAVDSRA SMGSFISSQN VEKIIEINKN ILGTMAGGAA DCLYWEKYLG KIIKIYELRN NEKISVRAAS TILSNILYQ YKGYGLCCGI ILSGYDHTGF NMFYVDDSGK KVEGNLFSCG SGSTYAYSIL DSAYDYNLNL DQAVELARNA I YHATFRDG ...String:
TTTLAFKFKD GIIVAVDSRA SMGSFISSQN VEKIIEINKN ILGTMAGGAA DCLYWEKYLG KIIKIYELRN NEKISVRAAS TILSNILYQ YKGYGLCCGI ILSGYDHTGF NMFYVDDSGK KVEGNLFSCG SGSTYAYSIL DSAYDYNLNL DQAVELARNA I YHATFRDG GSGGKVRVFH IHKNGYDKII EGEDVFDLHY HYTNPEQKDQ YVM

UniProtKB: Proteasome subunit beta

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Macromolecule #13: Proteasome subunit beta

MacromoleculeName: Proteasome subunit beta / type: protein_or_peptide / ID: 13 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 27.301203 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MDLILYNDNL TEKKTEKENV IEHGRGFKRW YPYIDNGGTV IGLTGKDYVI LAADTRLSLS YSIYTRFCPK ISKLTDKCII GSSGMQSDI KTLHSLLQKK IQLFVLEHSH YPDIHVIARL LCVILYSRRF FPYYAFNILA GVDENNKGVL YNYDSVGSYC E ATHSCVGS ...String:
MDLILYNDNL TEKKTEKENV IEHGRGFKRW YPYIDNGGTV IGLTGKDYVI LAADTRLSLS YSIYTRFCPK ISKLTDKCII GSSGMQSDI KTLHSLLQKK IQLFVLEHSH YPDIHVIARL LCVILYSRRF FPYYAFNILA GVDENNKGVL YNYDSVGSYC E ATHSCVGS GSQLILPILD NRVEQKNQLI KNTNFNLGDD INFVKDAITS ATERDIYTGD KTLIYVIDKM GINVNTLDLK QD

UniProtKB: Proteasome subunit beta

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Macromolecule #14: Proteasome subunit beta

MacromoleculeName: Proteasome subunit beta / type: protein_or_peptide / ID: 14 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Molecular weightTheoretical: 34.822988 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MTLGPVVTGT SVIAIKYKHG IMIAADRKAS YGSYAKFQNV ERIFKINNKT VMGFSGELAD AQYLHELLTR KNINNLSEKK RKEDMYTPQ HYHSYVSRVF YVRKNRIDPL FNNIIIAGIN SQKYDNNDDN VLLYTNKNND DEQNEYKNNE EYKEIHKDDL Y IGFVDMHG ...String:
MTLGPVVTGT SVIAIKYKHG IMIAADRKAS YGSYAKFQNV ERIFKINNKT VMGFSGELAD AQYLHELLTR KNINNLSEKK RKEDMYTPQ HYHSYVSRVF YVRKNRIDPL FNNIIIAGIN SQKYDNNDDN VLLYTNKNND DEQNEYKNNE EYKEIHKDDL Y IGFVDMHG TNFCDDYITT GYARYFALTL LRDHYKDNMT EEEARILINE CLRILYFRDA TSSNFIQIVK VTSKGVEYEE PY ILPCVLN SADYVYPSTL LPPAGCMWEN LYFQSSAWSH PQFEKGGGSG GGSGGSAWSH PQFEK

UniProtKB: Proteasome subunit beta

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Macromolecule #15: N~4~-tert-butyl-N~2~-(4-methylbenzene-1-sulfonyl)-N~1~-[2-(1-oxo-...

MacromoleculeName: N~4~-tert-butyl-N~2~-(4-methylbenzene-1-sulfonyl)-N~1~-[2-(1-oxo-1,3-dihydro-2H-isoindol-2-yl)ethyl]-L-aspartamide
type: ligand / ID: 15 / Number of copies: 2 / Formula: A1CRS
Molecular weightTheoretical: 500.61 Da

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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

Concentration3 mg/mL
BufferpH: 7.5 / Details: 20 mM Tris, pH 7.5, 5 mM MgCl2, and 100 mM KCl
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY ARRAY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: OTHER
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 279 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Specialist opticsEnergy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Digitization - Dimensions - Width: 5760 pixel / Digitization - Dimensions - Height: 4092 pixel / Number grids imaged: 1 / Number real images: 24167 / Average exposure time: 1.2 sec. / Average electron dose: 58.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.8 µm / Nominal defocus min: 1.2 µm / Nominal magnification: 105000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 17354694
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

8g6e

Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C2 (2 fold cyclic) / Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 2.86 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 4.4) / Number images used: 124807
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
Final 3D classificationSoftware - Name: cryoSPARC
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

8g6e


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL
Output model

PDB-9q6f:
Structure of Plasmodium falciparum 20S proteasome bound to an asparagine-ethylenediamine based inhibitor TDI6245

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