3M66

Crystal structure of human Mitochondrial Transcription Termination Factor 3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of mitochondrial transcription termination factor 3 reveals a novel nucleic acid-binding domain.

Spahr, H.Samuelsson, T.Hallberg, B.M.Gustafsson, C.M.

(2010) Biochem.Biophys.Res.Commun. 397: 386-390

  • DOI: 10.1016/j.bbrc.2010.04.130

  • PubMed Abstract: 
  • In mammalian cells, a family of mitochondrial transcription termination factors (MTERFs) regulates mitochondrial gene expression. MTERF family members share a approximately 270 residues long MTERF-domain required for DNA binding and transcription reg ...

    In mammalian cells, a family of mitochondrial transcription termination factors (MTERFs) regulates mitochondrial gene expression. MTERF family members share a approximately 270 residues long MTERF-domain required for DNA binding and transcription regulation. However, the structure of this widely conserved domain is unknown. Here, we show that the MTERF-domain of human MTERF3 forms a half-doughnut-shaped right-handed superhelix. The superhelix is built from alpha-helical tandem repeats that display a novel triangular three-helix motif. This repeat motif, which we denote the MTERF-motif, is a conserved structural element present in proteins from metazoans, plants, and protozoans. Furthermore, a narrow, strongly positively charged nucleic acid-binding path is found in the middle of the concave side of the half-doughnut. This arrangement suggests a half clamp nucleic acid-binding mode for MTERF-domains.


    Organizational Affiliation

    Dept. of Laboratory Medicine, Division of Metabolic Diseases, Karolinska Institutet, Stockholm, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
mTERF domain-containing protein 1, mitochondrial
A
270Homo sapiensMutation(s): 0 
Gene Names: MTERF3 (MTERFD1)
Find proteins for Q96E29 (Homo sapiens)
Go to Gene View: MTERF3
Go to UniProtKB:  Q96E29
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.173 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 139.230α = 90.00
b = 32.240β = 106.59
c = 70.220γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXphasing
PHENIXmodel building
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-05-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance