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Open data
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Basic information
Entry | Database: PDB / ID: 9ey2 | ||||||
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Title | Human mitochondrial RNase Z with tRNA-His-CCA | ||||||
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![]() | RNA BINDING PROTEIN / RNase Z / ELAC2 / mitochondria / tRNA | ||||||
Function / homology | ![]() tRNase Z / brexanolone metabolic process / isoursodeoxycholate 7-beta-dehydrogenase (NAD+) activity / ursodeoxycholate 7-beta-dehydrogenase (NAD+) activity / 3-hydroxy-2-methylbutyryl-CoA dehydrogenase / 3-hydroxy-2-methylbutyryl-CoA dehydrogenase activity / mitochondrial tRNA methylation / tRNA (adenine9-N1)-methyltransferase / mitochondrial RNA 5'-end processing / mitochondrial tRNA processing ...tRNase Z / brexanolone metabolic process / isoursodeoxycholate 7-beta-dehydrogenase (NAD+) activity / ursodeoxycholate 7-beta-dehydrogenase (NAD+) activity / 3-hydroxy-2-methylbutyryl-CoA dehydrogenase / 3-hydroxy-2-methylbutyryl-CoA dehydrogenase activity / mitochondrial tRNA methylation / tRNA (adenine9-N1)-methyltransferase / mitochondrial RNA 5'-end processing / mitochondrial tRNA processing / tRNA (adenine(9)-N1)-methyltransferase activity / tRNA (guanine9-N1)-methyltransferase / mitochondrial ribonuclease P complex / tRNA (guanosine(9)-N1)-methyltransferase activity / mitochondrial tRNA 5'-end processing / chenodeoxycholate 7-alpha-dehydrogenase (NAD+) activity / tRNA modification in the mitochondrion / rRNA processing in the mitochondrion / tRNA processing in the mitochondrion / mitochondrial tRNA 3'-end processing / 7alpha-hydroxysteroid dehydrogenase / 17-beta-hydroxysteroid dehydrogenase (NAD+) activity / cholate 7-alpha-dehydrogenase (NAD+) activity / C21-steroid hormone metabolic process / 3'-tRNA processing endoribonuclease activity / tRNA methyltransferase complex / tRNA 3'-end processing / 3-hydroxyacyl-CoA dehydrogenase / tRNA-specific ribonuclease activity / L-isoleucine catabolic process / 3alpha(17beta)-hydroxysteroid dehydrogenase (NAD+) / tRNA-derived small RNA (tsRNA or tRNA-related fragment, tRF) biogenesis / 3-hydroxyacyl-CoA dehydrogenase (NAD+) activity / tRNA decay / : / 3alpha(or 20beta)-hydroxysteroid dehydrogenase / androstan-3-alpha,17-beta-diol dehydrogenase (NAD+) activity / testosterone dehydrogenase (NAD+) activity / bile acid biosynthetic process / positive regulation of mitochondrial translation / 17beta-estradiol 17-dehydrogenase / estradiol 17-beta-dehydrogenase [NAD(P)+] activity / Branched-chain amino acid catabolism / tRNA processing in the nucleus / estrogen metabolic process / fatty acid beta-oxidation / mitochondrial nucleoid / androgen metabolic process / Mitochondrial protein degradation / RNA endonuclease activity / Transferases; Transferring one-carbon groups; Methyltransferases / fatty acid metabolic process / mitochondrion organization / lipid metabolic process / mRNA processing / protein homotetramerization / tRNA binding / mitochondrial matrix / mitochondrion / RNA binding / nucleoplasm / metal ion binding / identical protein binding / nucleus / plasma membrane / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.96 Å | ||||||
![]() | Valentin Gese, G. / Hallberg, B.M. | ||||||
Funding support | 1items
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![]() | ![]() Title: Structural basis of 3'-tRNA maturation by the human mitochondrial RNase Z complex. Authors: Genís Valentín Gesé / B Martin Hällberg / ![]() ![]() Abstract: Maturation of human mitochondrial tRNA is essential for cellular energy production, yet the underlying mechanisms remain only partially understood. Here, we present several cryo-EM structures of the ...Maturation of human mitochondrial tRNA is essential for cellular energy production, yet the underlying mechanisms remain only partially understood. Here, we present several cryo-EM structures of the mitochondrial RNase Z complex (ELAC2/SDR5C1/TRMT10C) bound to different maturation states of mitochondrial tRNA, showing the molecular basis for tRNA-substrate selection and catalysis. Our structural insights provide a molecular rationale for the 5'-to-3' tRNA processing order in mitochondria, the 3'-CCA antideterminant effect, and the basis for sequence-independent recognition of mitochondrial tRNA substrates. Furthermore, our study links mutations in ELAC2 to clinically relevant mitochondrial diseases, offering a deeper understanding of the molecular defects contributing to these conditions. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 424.5 KB | Display | ![]() |
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PDB format | ![]() | 334 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 50052MC ![]() 9ey0C ![]() 9ey1C ![]() 9gchC C: citing same article ( M: map data used to model this data |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 3 types, 6 molecules ABCDFE
#1: Protein | Mass: 26947.021 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: Q99714, 3-hydroxyacyl-CoA dehydrogenase, 17beta-estradiol 17-dehydrogenase, 3alpha(17beta)-hydroxysteroid dehydrogenase (NAD+), 3-hydroxy-2-methylbutyryl-CoA dehydrogenase, ...References: UniProt: Q99714, 3-hydroxyacyl-CoA dehydrogenase, 17beta-estradiol 17-dehydrogenase, 3alpha(17beta)-hydroxysteroid dehydrogenase (NAD+), 3-hydroxy-2-methylbutyryl-CoA dehydrogenase, 3alpha(or 20beta)-hydroxysteroid dehydrogenase, 7alpha-hydroxysteroid dehydrogenase #2: Protein | | Mass: 42055.281 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: Q7L0Y3, Transferases; Transferring one-carbon groups; Methyltransferases, tRNA (adenine9-N1)-methyltransferase, tRNA (guanine9-N1)-methyltransferase #4: Protein | | Mass: 89142.328 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-RNA chain , 1 types, 1 molecules T
#3: RNA chain | Mass: 22626.486 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() |
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-Non-polymers , 3 types, 4 molecules 




#5: Chemical | ChemComp-SAM / |
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#6: Chemical | ChemComp-GTP / |
#7: Chemical |
-Details
Has ligand of interest | N |
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Has protein modification | N |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Molecular weight | Value: 0.25 MDa / Experimental value: NO | ||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 7.5 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 400 nm |
Image recording | Electron dose: 48 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 4773315 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.96 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 4436 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building |
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Refinement | Resolution: 2.96→2.96 Å / Cor.coef. Fo:Fc: 0.811 / SU B: 24.858 / SU ML: 0.401 / ESU R: 0.376 Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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Solvent computation | Solvent model: PARAMETERS FOR MASK CACLULATION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 45.811 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: 1 / Total: 16556 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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