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Open data
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Basic information
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Title | Human pseudouridine synthase 3 and tRNA-Gln | ||||||||||||
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![]() | RNA modification / pseudouridylation / tRNA / homodimer / RNA BINDING PROTEIN | ||||||||||||
Function / homology | ![]() tRNA pseudouridine38/39 synthase / tRNA pseudouridine(38/39) synthase activity / tRNA pseudouridine synthesis / mRNA pseudouridine synthesis / pseudouridine synthase activity / tRNA modification in the nucleus and cytosol / tRNA modification / RNA binding / nucleus / cytoplasm / cytosol Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.1 Å | ||||||||||||
![]() | Lin T-Y / Glatt S | ||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: The molecular basis of tRNA selectivity by human pseudouridine synthase 3. Authors: Ting-Yu Lin / Leon Kleemann / Jakub Jeżowski / Dominika Dobosz / Michał Rawski / Paulina Indyka / Grzegorz Ważny / Rahul Mehta / Andrzej Chramiec-Głąbik / Łukasz Koziej / Tristan Ranff ...Authors: Ting-Yu Lin / Leon Kleemann / Jakub Jeżowski / Dominika Dobosz / Michał Rawski / Paulina Indyka / Grzegorz Ważny / Rahul Mehta / Andrzej Chramiec-Głąbik / Łukasz Koziej / Tristan Ranff / Christian Fufezan / Mateusz Wawro / Jakub Kochan / Joanna Bereta / Sebastian A Leidel / Sebastian Glatt / ![]() ![]() ![]() Abstract: Pseudouridine (Ψ), the isomer of uridine, is ubiquitously found in RNA, including tRNA, rRNA, and mRNA. Human pseudouridine synthase 3 (PUS3) catalyzes pseudouridylation of position 38/39 in tRNAs. ...Pseudouridine (Ψ), the isomer of uridine, is ubiquitously found in RNA, including tRNA, rRNA, and mRNA. Human pseudouridine synthase 3 (PUS3) catalyzes pseudouridylation of position 38/39 in tRNAs. However, the molecular mechanisms by which it recognizes its RNA targets and achieves site specificity remain elusive. Here, we determine single-particle cryo-EM structures of PUS3 in its apo form and bound to three tRNAs, showing how the symmetric PUS3 homodimer recognizes tRNAs and positions the target uridine next to its active site. Structure-guided and patient-derived mutations validate our structural findings in complementary biochemical assays. Furthermore, we deleted PUS1 and PUS3 in HEK293 cells and mapped transcriptome-wide Ψ sites by Pseudo-seq. Although PUS1-dependent sites were detectable in tRNA and mRNA, we found no evidence that human PUS3 modifies mRNAs. Our work provides the molecular basis for PUS3-mediated tRNA modification in humans and explains how its tRNA modification activity is linked to intellectual disabilities. | ||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 59.7 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 19.7 KB 19.7 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 8.4 KB | Display | ![]() |
Images | ![]() | 70.4 KB | ||
Masks | ![]() | 64 MB | ![]() | |
Filedesc metadata | ![]() | 6.5 KB | ||
Others | ![]() ![]() | 59.4 MB 59.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 875.6 KB | Display | ![]() |
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Full document | ![]() | 875.1 KB | Display | |
Data in XML | ![]() | 16.2 KB | Display | |
Data in CIF | ![]() | 20.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8okdMC ![]() 9enbC ![]() 9encC ![]() 9eneC ![]() 9enfC ![]() 9f9qC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Map
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Voxel size | X=Y=Z: 0.86 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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-Half map: half map B
File | emd_16926_half_map_1.map | ||||||||||||
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Annotation | half map B | ||||||||||||
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-Half map: half map A
File | emd_16926_half_map_2.map | ||||||||||||
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Annotation | half map A | ||||||||||||
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Sample components
-Entire : homodimer of PUS3 and tRNA-Gln complex
Entire | Name: homodimer of PUS3 and tRNA-Gln complex |
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Components |
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-Supramolecule #1: homodimer of PUS3 and tRNA-Gln complex
Supramolecule | Name: homodimer of PUS3 and tRNA-Gln complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Molecular weight | Theoretical: 110 KDa |
-Supramolecule #2: Pseudouridine synthase 3 (PUS3)
Supramolecule | Name: Pseudouridine synthase 3 (PUS3) / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() |
-Supramolecule #3: tRNA-Gln
Supramolecule | Name: tRNA-Gln / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2 |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: tRNA pseudouridine(38/39) synthase
Macromolecule | Name: tRNA pseudouridine(38/39) synthase / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: tRNA pseudouridine38/39 synthase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 55.704199 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: AMADNDTDRN QTEKLLKRVR ELEQEVQRLK KEQAKNKEDS NIRENSAGAG KTKRAFDFSA HGRRHVALRI AYMGWGYQGF ASQENTNNT IEEKLFEALT KTRLVESRQT SNYHRCGRTA KGVSAFGQVI SLDLRSQFPR GRDSEDFNVK EEANAAAEEI R YTHILNRV ...String: AMADNDTDRN QTEKLLKRVR ELEQEVQRLK KEQAKNKEDS NIRENSAGAG KTKRAFDFSA HGRRHVALRI AYMGWGYQGF ASQENTNNT IEEKLFEALT KTRLVESRQT SNYHRCGRTA KGVSAFGQVI SLDLRSQFPR GRDSEDFNVK EEANAAAEEI R YTHILNRV LPPDIRILAW APVEPSFSAR FSCLERTYRY FFPRADLDIV TMDYAAQKYV GTHDFRNLCK MDVANGVINF QR TILSAQV QLVGQSPGEG RWQEPFQLCQ FEVTGQAFLY HQVRCMMAIL FLIGQGMEKP EIIDELLNIE KNPQKPQYSM AVE FPLVLY DCKFENVKWI YDQEAQEFNI THLQQLWANH AVKTHMLYSM LQGLDTVPVP CGIGPKMDGM TEWGNVKPSV IKQT SAFVE GVKMRTYKPL MDRPKCQGLE SRIQHFVRRG RIEHPHLFHE EETKAKRDCN DTLEEENTNL ETPTKRVCVD TEIKS II UniProtKB: tRNA pseudouridine(38/39) synthase |
-Macromolecule #2: human tRNA-Gln (70-MER)
Macromolecule | Name: human tRNA-Gln (70-MER) / type: rna / ID: 2 / Number of copies: 2 |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 24.047236 KDa |
Sequence | String: GGCCCCAUGG UGUAAUGGUU AGCACUCUGG ACUUUGAAUC CAGCGAUCCG AGUUCAAAUC UCGGUGGGAC CUCCA |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.3 mg/mL |
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Buffer | pH: 7.5 |
Grid | Model: Quantifoil / Material: COPPER / Support film - Material: CARBON / Support film - topology: HOLEY ARRAY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR / Details: 8 mA |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 8320 / Average electron dose: 40.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.9 µm |
Sample stage | Specimen 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
-Atomic model buiding 1
Initial model | Chain - Source name: AlphaFold / Chain - Initial model type: in silico model |
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Refinement | Protocol: AB INITIO MODEL |
Output model | ![]() PDB-8okd: |