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Entry
Database: EMDB / ID: EMD-6452
TitleCryo electron-microscopy reconstruction of the P. falciparum 80S ribosome bound with A/P and P/E tRNAs
Map dataCryo-EM reconstruction of the P. falciparum schizont-stage ribosome in rotated state, bound to A/P and P/E tRNAs
Sample
  • Sample: The schizont-stage Plasmodium falciparum 80S ribosome bound to A/P and P/E tRNAs
  • Complex: 80S ribosome
KeywordsCryo-EM / malaria / translational pausing / RACK1
Function / homology
Function and homology information


RMTs methylate histone arginines / Major pathway of rRNA processing in the nucleolus and cytosol / Protein methylation / Translesion synthesis by REV1 / Recognition of DNA damage by PCNA-containing replication complex / Translesion Synthesis by POLH / Translesion synthesis by POLK / Translesion synthesis by POLI / Josephin domain DUBs / Metalloprotease DUBs ...RMTs methylate histone arginines / Major pathway of rRNA processing in the nucleolus and cytosol / Protein methylation / Translesion synthesis by REV1 / Recognition of DNA damage by PCNA-containing replication complex / Translesion Synthesis by POLH / Translesion synthesis by POLK / Translesion synthesis by POLI / Josephin domain DUBs / Metalloprotease DUBs / DNA Damage Recognition in GG-NER / Formation of Incision Complex in GG-NER / Dual Incision in GG-NER / Formation of TC-NER Pre-Incision Complex / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / ER Quality Control Compartment (ERQC) / Iron uptake and transport / L13a-mediated translational silencing of Ceruloplasmin expression / SRP-dependent cotranslational protein targeting to membrane / Translation initiation complex formation / Formation of a pool of free 40S subunits / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / GTP hydrolysis and joining of the 60S ribosomal subunit / Negative regulators of DDX58/IFIH1 signaling / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / PINK1-PRKN Mediated Mitophagy / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Aggrephagy / 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 / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / protein-RNA complex assembly / maturation of LSU-rRNA / endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / cytosolic ribosome / ribosomal large subunit biogenesis / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / small-subunit processome / maintenance of translational fidelity / modification-dependent protein catabolic process / mRNA 5'-UTR binding / protein tag activity / rRNA processing / ribosome biogenesis / large ribosomal subunit / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / large ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / ubiquitin-dependent protein catabolic process / cytosolic large ribosomal subunit / cytoplasmic translation / negative regulation of translation / rRNA binding / protein ubiquitination / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / mRNA binding / ubiquitin protein ligase binding / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleus / cytoplasm / cytosol
Similarity search - Function
: / Ribosomal protein L2, archaeal-type / Ribosomal L28e/Mak16 / Ribosomal L28e protein family / : / Ribosomal protein S26e signature. / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S26e / Ribosomal protein S26e superfamily ...: / Ribosomal protein L2, archaeal-type / Ribosomal L28e/Mak16 / Ribosomal L28e protein family / : / Ribosomal protein S26e signature. / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / : / Ribosomal protein S12e signature. / Ribosomal protein S12e / Ribosomal protein L13e, conserved site / Ribosomal protein L13e signature. / Ribosomal protein L29e / Ribosomal L29e protein family / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein S21e / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Ribosomal protein S2, eukaryotic / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal L22e protein family / Ribosomal protein L38e / Ribosomal protein L38e superfamily / Ribosomal L38e protein family / 40S Ribosomal protein S10 / Ribosomal protein L10e, conserved site / Ribosomal protein L10e signature. / Ribosomal protein L19, eukaryotic / Ribosomal protein L10e / Plectin/S10, N-terminal / Plectin/S10 domain / Ribosomal protein L13e / Ribosomal protein L13e / Ribosomal protein L44e signature. / 60S ribosomal protein L18a/ L20, eukaryotes / Ribosomal protein S10, eukaryotic/archaeal / Ribosomal protein S30 / Ribosomal protein S30 / Ribosomal protein S17e, conserved site / Ribosomal protein S17e signature. / Ribosomal protein S25 / S25 ribosomal protein / Ribosomal protein L34e, conserved site / Ribosomal protein S8e subdomain, eukaryotes / Ribosomal protein L34e signature. / : / Ribosomal protein S2, eukaryotic/archaeal / Ribosomal protein L5 eukaryotic, C-terminal / Ribosomal L18 C-terminal region / Ribosomal protein L23/L25, N-terminal / Ribosomal protein L23, N-terminal domain / Ribosomal protein L44e / Ribosomal protein L44 / Ribosomal L40e family / Ribosomal protein L18/L18-A/B/e, conserved site / Ribosomal protein L18e signature. / 50S ribosomal protein L18Ae/60S ribosomal protein L20 and L18a / Ribosomal protein L30e signature 1. / Ribosomal protein L36e signature. / Ribosomal protein 50S-L18Ae/60S-L20/60S-L18A / Ribosomal proteins 50S-L18Ae/60S-L20/60S-L18A / Ribosomal protein 60S L18 and 50S L18e / 40S ribosomal protein S29/30S ribosomal protein S14 type Z / Ribosomal_L40e / Ribosomal protein L40e / Ribosomal protein L40e superfamily / : / Eukaryotic Ribosomal Protein L27, KOW domain / Ribosomal protein S3, eukaryotic/archaeal / Ribosomal protein L27e / Ribosomal protein L27e superfamily / Ribosomal L27e protein family / Ribosomal protein L39e, conserved site / Ribosomal protein L39e signature. / Ribosomal protein L30e signature 2. / Ribosomal protein L30e, conserved site / 40S ribosomal protein S4, C-terminal domain / 40S ribosomal protein S4 C-terminus / 60S ribosomal protein L35 / Ribosomal protein L6e / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal protein S4e signature. / Ribosomal protein S19A/S15e / : / 60S ribosomal protein L19 / Ribosomal protein S19e / Ribosomal protein S19e / Ribosomal_S19e / Ribosomal protein S17e / Ribosomal protein S17e-like superfamily / Ribosomal S17 / Ribosomal protein L34Ae / Ribosomal protein L34e
Similarity search - Domain/homology
Ribosomal protein L15 / 60S ribosomal protein L39 / 40S ribosomal protein S29, putative / Ribosomal protein L37 / 40S ribosomal protein S19 / 60S ribosomal protein L18-2, putative / 60S ribosomal protein L19 / 60S ribosomal protein L27a, putative / 60S ribosomal protein L41 / 60S ribosomal protein L29 ...Ribosomal protein L15 / 60S ribosomal protein L39 / 40S ribosomal protein S29, putative / Ribosomal protein L37 / 40S ribosomal protein S19 / 60S ribosomal protein L18-2, putative / 60S ribosomal protein L19 / 60S ribosomal protein L27a, putative / 60S ribosomal protein L41 / 60S ribosomal protein L29 / 60S ribosomal protein L26, putative / 40S ribosomal protein S11, putative / 40S ribosomal protein S15A, putative / Large ribosomal subunit protein eL43 / 40S ribosomal protein S26 / Small ribosomal subunit protein eS30 / Large ribosomal subunit protein eL42 / 40S ribosomal protein S23, putative / Small ribosomal subunit protein eS12 / 60S ribosomal protein L7, putative / Small ribosomal subunit protein eS1 / 60S ribosomal protein L32 / 40S ribosomal protein S9, putative / 40S ribosomal protein S24 / 60S ribosomal protein L2 / 40S ribosomal protein S11 / Large ribosomal subunit protein uL4 / 60S ribosomal protein L31 / 40S ribosomal protein S17, putative / 60S ribosomal protein L36 / 40S ribosomal protein S16, putative / 60S ribosomal protein L13 / Large ribosomal subunit protein eL22 / 40S ribosomal protein S5, putative / 40S ribosomal protein S10, putative / 60S ribosomal protein L11a, putative / 60S ribosomal protein L34 / Ubiquitin-60S ribosomal protein L40 / 40S ribosomal protein S15 / Large ribosomal subunit protein uL22 / 40S ribosomal protein S6 / 60S ribosomal protein L18a / 60S ribosomal protein L6-2, putative / 60S ribosomal protein L23, putative / 60S ribosomal protein L23 / 60S ribosomal protein L6, putative / 60S ribosomal protein L24, putative / 40S ribosomal protein S27 / 40S ribosomal protein S7 / 40S ribosomal protein S19 / 40S ribosomal protein S21 / 60S ribosomal protein L35ae, putative / 60S ribosomal protein L28 / 60S ribosomal protein L38 / 40S ribosomal protein S18, putative / 60S ribosomal protein L35, putative / 40S ribosomal protein S4 / 60S ribosomal protein L3 / Small ribosomal subunit protein uS2 / 60S ribosomal protein L30e, putative / 60S ribosomal protein L13, putative / Small ribosomal subunit protein uS10 / 40S ribosomal protein S3 / 40S ribosomal protein S28e, putative / 60S ribosomal protein L27 / Small ribosomal subunit protein uS5 / 60S ribosomal protein L14, putative / 60S ribosomal protein L21 / 60S ribosomal protein L7a / 60S ribosomal protein L5, putative / 40S ribosomal protein S25 / 60S ribosomal protein L10, putative / 40S ribosomal protein S8
Similarity search - Component
Biological speciesPlasmodium falciparum (malaria parasite P. falciparum)
Methodsingle particle reconstruction / cryo EM / Resolution: 5.8 Å
AuthorsSun M / Li W / Blomqvist K / Das S / Hashem Y / Dvorin JD / Frank J
CitationJournal: Elife / Year: 2014
Title: Cryo-EM structure of the Plasmodium falciparum 80S ribosome bound to the anti-protozoan drug emetine.
Authors: Wilson Wong / Xiao-chen Bai / Alan Brown / Israel S Fernandez / Eric Hanssen / Melanie Condron / Yan Hong Tan / Jake Baum / Sjors H W Scheres /
Abstract: Malaria inflicts an enormous burden on global human health. The emergence of parasite resistance to front-line drugs has prompted a renewed focus on the repositioning of clinically approved drugs as ...Malaria inflicts an enormous burden on global human health. The emergence of parasite resistance to front-line drugs has prompted a renewed focus on the repositioning of clinically approved drugs as potential anti-malarial therapies. Antibiotics that inhibit protein translation are promising candidates for repositioning. We have solved the cryo-EM structure of the cytoplasmic ribosome from the human malaria parasite, Plasmodium falciparum, in complex with emetine at 3.2 Å resolution. Emetine is an anti-protozoan drug used in the treatment of ameobiasis that also displays potent anti-malarial activity. Emetine interacts with the E-site of the ribosomal small subunit and shares a similar binding site with the antibiotic pactamycin, thereby delivering its therapeutic effect by blocking mRNA/tRNA translocation. As the first cryo-EM structure that visualizes an antibiotic bound to any ribosome at atomic resolution, this establishes cryo-EM as a powerful tool for screening and guiding the design of drugs that target parasite translation machinery.
History
DepositionSep 3, 2015-
Header (metadata) releaseOct 14, 2015-
Map releaseOct 14, 2015-
UpdateDec 16, 2015-
Current statusDec 16, 2015Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.02
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.02
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-3jbo
  • Surface level: 0.02
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

400_6452.gif

Downloads & links

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Map

FileDownload / File: emd_6452.map.gz / Format: CCP4 / Size: 96.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-EM reconstruction of the P. falciparum schizont-stage ribosome in rotated state, bound to A/P and P/E tRNAs
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.66 Å/pix.
x 296 pix.
= 491.36 Å		1.66 Å/pix.
x 296 pix.
= 491.36 Å		1.66 Å/pix.
x 296 pix.
= 491.36 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.66 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.02 / Movie #1: 0.02
Minimum - Maximum-0.07200608 - 0.11696046
Average (Standard dev.)0.00066937 (±0.00645352)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions296296296
Spacing296296296
CellA=B=C: 491.36 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.661.661.66
M x/y/z296296296
origin x/y/z0.0000.0000.000
length x/y/z491.360491.360491.360
α/β/γ90.00090.00090.000
start NX/NY/NZ-190-190-189
NX/NY/NZ380380380
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS296296296
D min/max/mean-0.0720.1170.001

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Supplemental data

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Sample components

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Entire : The schizont-stage Plasmodium falciparum 80S ribosome bound to A/...

EntireName: The schizont-stage Plasmodium falciparum 80S ribosome bound to A/P and P/E tRNAs
Components
  • Sample: The schizont-stage Plasmodium falciparum 80S ribosome bound to A/P and P/E tRNAs
  • Complex: 80S ribosome

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Supramolecule #1000: The schizont-stage Plasmodium falciparum 80S ribosome bound to A/...

SupramoleculeName: The schizont-stage Plasmodium falciparum 80S ribosome bound to A/P and P/E tRNAs
type: sample / ID: 1000 / Number unique components: 1

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Supramolecule #1: 80S ribosome

SupramoleculeName: 80S ribosome / type: complex / ID: 1 / Recombinant expression: No / Database: NCBI / Ribosome-details: ribosome-eukaryote: ALL
Source (natural)Organism: Plasmodium falciparum (malaria parasite P. falciparum)
Strain: 3D7 / synonym: Plasmodium

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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: 7.5
Details: 10 mM HEPES potassium, 50 mM KOAc, 10 mM NH4Cl, 2 mM DTT, 5 mM Mg(OAc)2
GridDetails: 300 mesh Copper/Molbydenum holey carton-coated Quantifoil R2/4 grid, containing an additional continuous thin layer of carbon
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK IV / Method: Blot for 4 seconds before plunging

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Electron microscopy

MicroscopeFEI POLARA 300
DateOct 13, 2013
Image recordingCategory: CCD / Film or detector model: GATAN K2 (4k x 4k) / Number real images: 5734 / Average electron dose: 25 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsCalibrated magnification: 30120 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.26 mm / Nominal defocus max: 3.5 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 23000
Sample stageSpecimen holder model: GATAN HELIUM
Experimental equipment
Model: Tecnai Polara / Image courtesy: FEI Company

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Image processing

Detailssee 'Materials and Methods' in Sun, M., et al 2015
CTF correctionDetails: Each micrograph
Final reconstructionResolution.type: BY AUTHOR / Resolution: 5.8 Å / Resolution method: OTHER / Software - Name: Arachnid, CTFFIND3, RELION / Number images used: 22793

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Atomic model buiding 1

Initial modelPDB ID:

3j79

SoftwareName: MDFF
RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-3jbo:
Cryo-electron microscopy reconstruction of the Plasmodium falciparum 80S ribosome bound to P/E-tRNA

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Atomic model buiding 2

Initial modelPDB ID:

3j7a

SoftwareName: MDFF
RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-3jbo:
Cryo-electron microscopy reconstruction of the Plasmodium falciparum 80S ribosome bound to P/E-tRNA

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