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- EMDB-43746: Plasmodium falciparum 20S proteasome bound to an inhibitor -

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Basic information

Entry
Database: EMDB / ID: EMD-43746
TitlePlasmodium falciparum 20S proteasome bound to an inhibitor
Map dataPlasmodium falciparum 20S proteasome bound with inhibitor
Sample
  • Complex: Plasmodium falciparum 20S proteasome bound with an inhibitor
    • Protein or peptide: x 14 types
  • Ligand: x 1 types
KeywordsMalaria / Plasmodium falciparum / proteasome / drug discovery / CYTOSOLIC PROTEIN / CYTOSOLIC PROTEIN-INHIBITOR complex
Function / homology
Function and homology information


Cross-presentation of soluble exogenous antigens (endosomes) / Proteasome assembly / Orc1 removal from chromatin / CDK-mediated phosphorylation and removal of Cdc6 / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / KEAP1-NFE2L2 pathway / UCH proteinases / Ub-specific processing proteases / Neddylation / Antigen processing: Ubiquitination & Proteasome degradation ...Cross-presentation of soluble exogenous antigens (endosomes) / Proteasome assembly / Orc1 removal from chromatin / CDK-mediated phosphorylation and removal of Cdc6 / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / KEAP1-NFE2L2 pathway / UCH proteinases / Ub-specific processing proteases / Neddylation / Antigen processing: Ubiquitination & Proteasome degradation / MAPK6/MAPK4 signaling / ABC-family proteins mediated transport / AUF1 (hnRNP D0) binds and destabilizes mRNA / Neutrophil degranulation / proteasome core complex / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / threonine-type endopeptidase activity / proteasome core complex, alpha-subunit complex / ubiquitin-dependent protein catabolic process / endopeptidase activity / proteasome-mediated ubiquitin-dependent protein catabolic process / hydrolase activity / nucleus / cytosol / cytoplasm
Similarity search - Function
Proteasome subunit alpha 1 / 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 subunit alpha 1 / 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 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 beta / Proteasome subunit alpha type-2, putative / Proteasome subunit alpha type-3, putative / Proteasome subunit beta / Proteasome subunit beta type-6, putative / Proteasome subunit beta / Proteasome subunit beta / Proteasome subunit alpha type-6, putative / Proteasome subunit alpha type / Proteasome subunit alpha type ...Proteasome subunit beta / Proteasome subunit alpha type-2, putative / Proteasome subunit alpha type-3, putative / Proteasome subunit beta / Proteasome subunit beta type-6, putative / Proteasome subunit beta / Proteasome subunit beta / Proteasome subunit alpha type-6, putative / Proteasome subunit alpha type / Proteasome subunit alpha type / Proteasome subunit alpha type / Proteasome subunit beta / Proteasome subunit alpha type-1, putative / Proteasome subunit beta
Similarity search - Component
Biological speciesPlasmodium falciparum 3D7 (eukaryote)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsHan Y / Deng X / Ray S / Chen Z / Phillips M
Funding support United States, 4 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI103947 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI155784 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM007062 United States
Cancer Prevention and Research Institute of Texas (CPRIT)RP220582 United States
CitationJournal: Cell Chem Biol / Year: 2024
Title: Identification of potent and reversible piperidine carboxamides that are species-selective orally active proteasome inhibitors to treat malaria.
Authors: Aloysus Lawong / Suraksha Gahalawat / Sneha Ray / Nhi Ho / Yan Han / Kurt E Ward / Xiaoyi Deng / Zhe Chen / Ashwani Kumar / Chao Xing / Varun Hosangadi / Kate J Fairhurst / Kyuto Tashiro / ...Authors: Aloysus Lawong / Suraksha Gahalawat / Sneha Ray / Nhi Ho / Yan Han / Kurt E Ward / Xiaoyi Deng / Zhe Chen / Ashwani Kumar / Chao Xing / Varun Hosangadi / Kate J Fairhurst / Kyuto Tashiro / Glen Liszczak / David M Shackleford / Kasiram Katneni / Gong Chen / Jessica Saunders / Elly Crighton / Arturo Casas / Joshua J Robinson / Leah S Imlay / Xiaoyu Zhang / Andrew Lemoff / Zhiyu Zhao / Iñigo Angulo-Barturen / María Belén Jiménez-Díaz / Sergio Wittlin / Simon F Campbell / David A Fidock / Benoît Laleu / Susan A Charman / Joseph M Ready / Margaret A Phillips /
Abstract: Malaria remains a global health concern as drug resistance threatens treatment programs. We identified a piperidine carboxamide (SW042) with anti-malarial activity by phenotypic screening. Selection ...Malaria remains a global health concern as drug resistance threatens treatment programs. We identified a piperidine carboxamide (SW042) with anti-malarial activity by phenotypic screening. Selection of SW042-resistant Plasmodium falciparum (Pf) parasites revealed point mutations in the Pf_proteasome β5 active-site (Pfβ5). A potent analog (SW584) showed efficacy in a mouse model of human malaria after oral dosing. SW584 had a low propensity to generate resistance (minimum inoculum for resistance [MIR] >10) and was synergistic with dihydroartemisinin. Pf_proteasome purification was facilitated by His-tag introduction onto β7. Inhibition of Pfβ5 correlated with parasite killing, without inhibiting human proteasome isoforms or showing cytotoxicity. The Pf_proteasome_SW584 cryoelectron microscopy (cryo-EM) structure showed that SW584 bound non-covalently distal from the catalytic threonine, in an unexplored pocket at the β5/β6/β3 subunit interface that has species differences between Pf and human proteasomes. Identification of a reversible, species selective, orally active series with low resistance propensity provides a path for drugging this essential target.
History
DepositionFeb 20, 2024-
Header (metadata) releaseJul 31, 2024-
Map releaseJul 31, 2024-
UpdateMay 28, 2025-
Current statusMay 28, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_43746.png

Downloads & links

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Map

FileDownload / File: emd_43746.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationPlasmodium falciparum 20S proteasome bound with inhibitor
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 360 pix.
= 298.8 Å		0.83 Å/pix.
x 360 pix.
= 298.8 Å		0.83 Å/pix.
x 360 pix.
= 298.8 Å

Surface

Projections

Slices (1/3)

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Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.83 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.022
Minimum - Maximum-0.039390597 - 0.07876851
Average (Standard dev.)0.0003770189 (±0.0052817473)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 298.8 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: half map 2

Fileemd_43746_half_map_1.map
Annotationhalf map 2
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map 1

Fileemd_43746_half_map_2.map
Annotationhalf map 1
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Plasmodium falciparum 20S proteasome bound with an inhibitor

EntireName: Plasmodium falciparum 20S proteasome bound with an inhibitor
Components
  • Complex: Plasmodium falciparum 20S proteasome bound with an inhibitor
    • Protein or peptide: Proteasome endopeptidase complex
    • Protein or peptide: Proteasome endopeptidase complex
    • 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 endopeptidase complex
    • Protein or peptide: Proteasome subunit alpha type-3, putative
    • Protein or peptide: Proteasome subunit beta type-6, putative
    • Protein or peptide: Proteasome subunit beta
    • Protein or peptide: Proteasome subunit beta
    • Protein or peptide: Proteasome subunit beta
    • Protein or peptide: Proteasome subunit beta type
    • Protein or peptide: Proteasome subunit beta
    • Protein or peptide: Proteasome subunit beta
  • Ligand: (3S)-1-[(2-fluoroethoxy)acetyl]-N-{[(4P)-4-(6-methylpyridin-3-yl)-1,3-thiazol-2-yl]methyl}piperidine-3-carboxamide

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Supramolecule #1: Plasmodium falciparum 20S proteasome bound with an inhibitor

SupramoleculeName: Plasmodium falciparum 20S proteasome bound with an inhibitor
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#14
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 750 KDa

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Macromolecule #1: Proteasome endopeptidase complex

MacromoleculeName: Proteasome endopeptidase complex / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 29.531656 KDa
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 subunit alpha type-6, putative

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Macromolecule #2: Proteasome endopeptidase complex

MacromoleculeName: Proteasome endopeptidase complex / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 26.556391 KDa
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, putative

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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 3D7 (eukaryote)
Molecular weightTheoretical: 27.443037 KDa
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 QK

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 / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 27.263285 KDa
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 / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 28.417367 KDa
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 endopeptidase complex

MacromoleculeName: Proteasome endopeptidase complex / type: protein_or_peptide / ID: 6 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 28.871697 KDa
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 VQNEANE

UniProtKB: Proteasome subunit alpha type-1, putative

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Macromolecule #7: Proteasome subunit alpha type-3, putative

MacromoleculeName: Proteasome subunit alpha type-3, putative / type: protein_or_peptide / ID: 7 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 29.324295 KDa
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 subunit alpha type-3, putative

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Macromolecule #8: Proteasome subunit beta type-6, putative

MacromoleculeName: Proteasome subunit beta type-6, putative / type: protein_or_peptide / ID: 8 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 29.143936 KDa
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: Proteasome subunit beta type-6, putative

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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 / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 25.104885 KDa
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 / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 24.533131 KDa
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 / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 22.889105 KDa
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 type

MacromoleculeName: Proteasome subunit beta type / type: protein_or_peptide / ID: 12 / Number of copies: 2 / Enantiomer: LEVO / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 23.620646 KDa
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
Details: tag was introduced using the CRISPR/Cas9 system at the endogenous locus
Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 33.155211 KDa
Recombinant expressionOrganism: Plasmodium falciparum 3D7 (eukaryote)
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 LPPAGCMWGS GSENLYFQGH HHHHHHH

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 / EC number: proteasome endopeptidase complex
Source (natural)Organism: Plasmodium falciparum 3D7 (eukaryote)
Molecular weightTheoretical: 27.301203 KDa
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 #15: (3S)-1-[(2-fluoroethoxy)acetyl]-N-{[(4P)-4-(6-methylpyridin-3-yl)...

MacromoleculeName: (3S)-1-[(2-fluoroethoxy)acetyl]-N-{[(4P)-4-(6-methylpyridin-3-yl)-1,3-thiazol-2-yl]methyl}piperidine-3-carboxamide
type: ligand / ID: 15 / Number of copies: 2 / Formula: A1AE6
Molecular weightTheoretical: 420.501 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

Concentration1.4 mg/mL
BufferpH: 7.6
Component:
ConcentrationFormulaName
50.0 mMC4H11NO3Tris
150.0 mMNaClsodium chloride
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 80 sec. / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.2 µm / Nominal defocus min: 0.9 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: 1074710
CTF correctionSoftware - Name: Gctf / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: EMDB MAP
EMDB ID:

2981

Final reconstructionApplied symmetry - Point group: C2 (2 fold cyclic) / Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 4.0.1) / Number images used: 20317
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 4.0.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 4.0.1)
Final 3D classificationNumber classes: 4 / Software - Name: RELION (ver. 4.0.1)
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

5fmg


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

PDB-8w2f:
Plasmodium falciparum 20S proteasome bound to an inhibitor

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