5OL8

Structure of human mitochondrial transcription elongation factor (TEFM) C-terminal domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Mechanism of Transcription Anti-termination in Human Mitochondria.

Hillen, H.S.Parshin, A.V.Agaronyan, K.Morozov, Y.I.Graber, J.J.Chernev, A.Schwinghammer, K.Urlaub, H.Anikin, M.Cramer, P.Temiakov, D.

(2017) Cell 171: 1082-1093.e13

  • DOI: https://doi.org/10.1016/j.cell.2017.09.035
  • Primary Citation of Related Structures:  
    5OL8, 5OL9, 5OLA

  • PubMed Abstract: 

    In human mitochondria, transcription termination events at a G-quadruplex region near the replication origin are thought to drive replication of mtDNA by generation of an RNA primer. This process is suppressed by a key regulator of mtDNA-the transcription factor TEFM. We determined the structure of an anti-termination complex in which TEFM is bound to transcribing mtRNAP. The structure reveals interactions of the dimeric pseudonuclease core of TEFM with mobile structural elements in mtRNAP and the nucleic acid components of the elongation complex (EC). Binding of TEFM to the DNA forms a downstream "sliding clamp," providing high processivity to the EC. TEFM also binds near the RNA exit channel to prevent formation of the RNA G-quadruplex structure required for termination and thus synthesis of the replication primer. Our data provide insights into target specificity of TEFM and mechanisms by which it regulates the switch between transcription and replication of mtDNA.


  • Organizational Affiliation

    Department of Molecular Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transcription elongation factor, mitochondrial
A, B, C, D
319Homo sapiensMutation(s): 0 
Gene Names: TEFMC17orf42
UniProt & NIH Common Fund Data Resources
Find proteins for Q96QE5 (Homo sapiens)
Explore Q96QE5 
Go to UniProtKB:  Q96QE5
PHAROS:  Q96QE5
GTEx:  ENSG00000172171 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96QE5
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.48α = 90
b = 112.54β = 110.13
c = 88.84γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
AutoSolphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of HealthUnited StatesRO1 GM104231
German Research FoundationGermanySFB860
German Research FoundationGermanySPP1935
European Research CouncilGermany693023
Volkswagen FoundationGermany--

Revision History  (Full details and data files)

  • Version 1.0: 2017-10-18
    Type: Initial release
  • Version 1.1: 2017-10-25
    Changes: Database references
  • Version 1.2: 2017-11-29
    Changes: Database references
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references