5OLA

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.90 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.244 

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:  
    5OLA, 5OL9, 5OL8

  • 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 ...

    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 Cell Biology, Rowan University, School of Osteopathic Medicine, 2 Medical Center Drive, Stratford, NJ 08084, USA. Electronic address: temiakdm@rowan.edu.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription elongation factor, mitochondrialA, B, C, D234Homo 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
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase, mitochondrialE, I [auth F]1088Homo sapiensMutation(s): 0 
Gene Names: POLRMT
EC: 2.7.7.6
UniProt & NIH Common Fund Data Resources
Find proteins for O00411 (Homo sapiens)
Explore O00411 
Go to UniProtKB:  O00411
PHAROS:  O00411
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsLengthOrganismImage
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')J [auth G], F [auth N]34synthetic construct
Protein Feature View
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  • Reference Sequence
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  • Entity ID: 4
    MoleculeChainsLengthOrganismImage
    RNA (5'-R(P*GP*CP*GP*GP*CP*GP*CP*GP*C)-3')K [auth H], G [auth R]14synthetic construct
    Protein Feature View
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    • Reference Sequence
    Find similar nucleic acids by:  (by identity cutoff)  |  Structure
    Entity ID: 5
    MoleculeChainsLengthOrganismImage
    DNA (30-MER)L [auth I], H [auth T]34synthetic construct
    Protein Feature View
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    • Reference Sequence
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 3.90 Å
    • R-Value Free: 0.276 
    • R-Value Work: 0.243 
    • R-Value Observed: 0.244 
    • Space Group: C 1 2 1
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 224.53α = 90
    b = 155.55β = 113.58
    c = 164.19γ = 90
    Software Package:
    Software NamePurpose
    PHENIXrefinement
    XDSdata reduction
    XSCALEdata scaling
    PHASERphasing

    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