7ONU

Structure of human mitochondrial RNase P in complex with mitochondrial pre-tRNA-Tyr


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis of RNA processing by human mitochondrial RNase P.

Bhatta, A.Dienemann, C.Cramer, P.Hillen, H.S.

(2021) Nat Struct Mol Biol 28: 713-723

  • DOI: 10.1038/s41594-021-00637-y
  • Primary Citation of Related Structures:  
    7ONU

  • PubMed Abstract: 
  • Human mitochondrial transcripts contain messenger and ribosomal RNAs flanked by transfer RNAs (tRNAs), which are excised by mitochondrial RNase (mtRNase) P and Z to liberate all RNA species. In contrast to nuclear or bacterial RNase P, mtRNase P is not a ribozyme but comprises three protein subunits that carry out RNA cleavage and methylation by unknown mechanisms ...

    Human mitochondrial transcripts contain messenger and ribosomal RNAs flanked by transfer RNAs (tRNAs), which are excised by mitochondrial RNase (mtRNase) P and Z to liberate all RNA species. In contrast to nuclear or bacterial RNase P, mtRNase P is not a ribozyme but comprises three protein subunits that carry out RNA cleavage and methylation by unknown mechanisms. Here, we present the cryo-EM structure of human mtRNase P bound to precursor tRNA, which reveals a unique mechanism of substrate recognition and processing. Subunits TRMT10C and SDR5C1 form a subcomplex that binds conserved mitochondrial tRNA elements, including the anticodon loop, and positions the tRNA for methylation. The endonuclease PRORP is recruited and activated through interactions with its PPR and nuclease domains to ensure precise pre-tRNA cleavage. The structure provides the molecular basis for the first step of RNA processing in human mitochondria.


    Organizational Affiliation

    Cluster of Excellence 'Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells' (MBExC), University of Göttingen, Göttingen, Germany. hauke.hillen@med.uni-goettingen.de.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
3-hydroxyacyl-CoA dehydrogenase type-2A, B, C, D261Homo sapiensMutation(s): 0 
Gene Names: HSD17B10ERABHADH2MRPP2SCHADSDR5C1XH98G2
EC: 1.1.1.35 (PDB Primary Data), 1.1.1.62 (PDB Primary Data), 1.1.1.239 (PDB Primary Data), 1.1.1.178 (PDB Primary Data), 1.1.1.53 (PDB Primary Data), 1.1.1.159 (PDB Primary Data)
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Find proteins for Q99714 (Homo sapiens)
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Go to UniProtKB:  Q99714
PHAROS:  Q99714
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Mitochondrial ribonuclease P catalytic subunitE541Homo sapiensMutation(s): 0 
Gene Names: PRORPKIAA0391MRPP3
EC: 3.1.26.5
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Find proteins for O15091 (Homo sapiens)
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PHAROS:  O15091
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
tRNA methyltransferase 10 homolog CF367Homo sapiensMutation(s): 0 
Gene Names: TRMT10CMRPP1RG9MTD1
EC: 2.1.1 (PDB Primary Data), 2.1.1.218 (PDB Primary Data), 2.1.1.221 (PDB Primary Data)
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Find proteins for Q7L0Y3 (Homo sapiens)
Explore Q7L0Y3 
Go to UniProtKB:  Q7L0Y3
PHAROS:  Q7L0Y3
Protein Feature View
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsLengthOrganismImage
Mitochondrial Precursor tRNA-TyrG [auth T]128Homo sapiens
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)GermanyFOR2848
German Research Foundation (DFG)GermanySFB1190
German Research Foundation (DFG)GermanySFB860
German Research Foundation (DFG)GermanySPP2191
German Research Foundation (DFG)GermanyEXC 2067/1-390729940
European Research Council (ERC)GermanyCHROMATRANS 693023

Revision History  (Full details and data files)

  • Version 1.0: 2021-08-11
    Type: Initial release
  • Version 1.1: 2021-09-29
    Changes: Data collection, Database references