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TitleIntegrated structural biology of the native malarial translation machinery and its inhibition by an antimalarial drug.
Journal, issue, pagesNat Struct Mol Biol, Vol. 32, Issue 11, Page 2158-2164, Year 2025
Publish dateAug 18, 2025
AuthorsLeonie Anton / Wenjing Cheng / Meseret T Haile / Jerzy M Dziekan / David W Cobb / Xiyan Zhu / Leyan Han / Emerson Li / Anjali Nair / Carolyn L Lee / Hanyu Wang / Hangjun Ke / Guoan Zhang / Emma H Doud / Alan F Cowman / Chi-Min Ho /
PubMed AbstractOur understanding of cellular events is hampered by the gap between the resolution at which we can observe events inside cells and our ability to replicate physiological conditions in test tubes. ...Our understanding of cellular events is hampered by the gap between the resolution at which we can observe events inside cells and our ability to replicate physiological conditions in test tubes. Here, we show in Plasmodium falciparum, a non-model organism of high medical importance, that this gap can be bridged by using an integrated structural biology approach to visualize events inside the cell at molecular resolution. We determined eight high-resolution structures of the native malarial ribosome in actively translating states inside P. falciparum-infected human erythrocytes using in situ cryo-electron tomography. Following perturbation with a Plasmodium-specific translation inhibitor, we then observed a decrease in elongation factor-bound ribosomal states and an apparent upregulation of ribosome biogenesis in inhibitor-treated parasites. Our work elucidates new molecular details of the malarial translation elongation cycle and demonstrates direct multiscale visualization of drug-induced phenotypic changes in the structure and localization of individual molecules within the native cellular context.
External linksNat Struct Mol Biol / PubMed:40825879 / PubMed Central
MethodsEM (subtomogram averaging) / EM (single particle)
Resolution2.3 - 18.0 Å
Structure data

EMDB-41485, PDB-8tpu:
Subtomogram averaged consensus structure of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 4.1 Å

EMDB-41486: Subtomogram averaged decoding-1 state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 6.8 Å

EMDB-41487: Subtomogram averaged decoding-2 state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 18.0 Å

EMDB-41488: Subtomogram averaged classical iPRE state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 5.2 Å

EMDB-41489: Subtomogram averaged rotated-1 PRE state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 10.2 Å

EMDB-41490: Subtomogram averaged rotated-2 PRE state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 6.6 Å

EMDB-41491: Subtomogram averaged translocation state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 6.5 Å

EMDB-41492: Subtomogram averaged POST state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 4.6 Å

EMDB-41493: Subtomogram averaged unloaded state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 4.6 Å

EMDB-41494: Subtomogram averaged non-rotated 80S ribosome of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 4.3 Å

EMDB-42209: Subtomogram averaged rotated-1 PRE back rolled state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 10.9 Å

EMDB-42210: Subtomogram averaged eEF1alpha hibernating state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 12.2 Å

EMDB-42211: Subtomogram averaged eEF2 hibernating-1 state of the malarial 80S ribosome in Plasmodium falciparum-infected human erythrocytes
Method: EM (subtomogram averaging) / Resolution: 11.4 Å

EMDB-44915, PDB-9bup:
Single particle CryoEM structure of the Pf80S ribosome in non-rotated PRE state (nrt A-P-E)
Method: EM (single particle) / Resolution: 2.7 Å

EMDB-44916, PDB-9buq:
Single particle cryoEM structure of the Pf80S ribosome in the POST state (nrt with P- and E-site tRNA)
Method: EM (single particle) / Resolution: 2.3 Å

EMDB-44918, PDB-9bus:
Single particle CryoEM structure of the Pf80S ribosome in the unloaded state (nrt with E-site tRNA)
Method: EM (single particle) / Resolution: 2.4 Å

EMDB-44919, PDB-9but:
Single particle CryoEM structure of the Pf80S ribosome in the rotated-2 PRE state (rt state with P and E-site tRNA)
Method: EM (single particle) / Resolution: 2.8 Å

EMDB-44920, PDB-9buu:
Single particle CryoEM structure of the Pf80S ribosome in rotated state with E-site tRNA
Method: EM (single particle) / Resolution: 2.8 Å

Source
  • plasmodium falciparum 3d7 (eukaryote)
KeywordsRIBOSOME / malaria / cryoET / in situ / Plasmodium falciparum / translation / cryoEM / single particle

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