5OLA

Structure of mitochondrial transcription elongation complex in complex with elongation factor TEFM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.904 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.243 

wwPDB Validation 3D Report Full Report


This is version 1.2 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: 10.1016/j.cell.2017.09.035
  • Primary Citation of Related Structures:  

  • 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 transcri ...

    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: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcription elongation factor, mitochondrial
A, B, C, D
234Homo sapiensMutation(s): 0 
Gene Names: TEFM (C17orf42)
Find proteins for Q96QE5 (Homo sapiens)
Go to Gene View: TEFM
Go to UniProtKB:  Q96QE5
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase, mitochondrial
E, F
1088Homo sapiensMutation(s): 0 
Gene Names: POLRMT
EC: 2.7.7.6
Find proteins for O00411 (Homo sapiens)
Go to Gene View: POLRMT
Go to UniProtKB:  O00411
Entity ID: 3
MoleculeChainsLengthOrganism
DNA (5'-D(P*AP*TP*GP*GP*TP*GP*TP*AP*AP*CP*GP*CP*CP*AP*GP*AP*CP*GP*AP*AP*C)-3')N,G34synthetic construct
Entity ID: 4
MoleculeChainsLengthOrganism
RNA (5'-R(P*GP*CP*GP*GP*CP*GP*CP*GP*C)-3')R,H14synthetic construct
Entity ID: 5
MoleculeChainsLengthOrganism
DNA (30-MER)T,I34synthetic construct
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.904 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.243 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 224.530α = 90.00
b = 155.550β = 113.58
c = 164.190γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



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 

  • Version 1.0: 2017-10-18
    Type: Initial release
  • Version 1.1: 2017-10-25
    Type: Database references
  • Version 1.2: 2017-11-29
    Type: Database references