Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 31.56 kDa 
• Atom Count: 2485 
• Modelled Residue Count: 270 
• Deposited Residue Count: 270 
• Unique protein chains: 1

3M66

Crystal structure of human Mitochondrial Transcription Termination Factor 3

• PDB DOI: 10.2210/pdb3M66/pdb

• Classification: TRANSCRIPTION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-03-15 Released: 2010-05-05 
• Deposition Author(s): Spahr, H., Samuelsson, T., Hallberg, B.M., Gustafsson, C.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.199 
• R-Value Work: 0.173 
• R-Value Observed: 0.175 

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

• PubMed: 20430012 
• DOI: 10.1016/j.bbrc.2010.04.130
• Primary Citation of Related Structures:  
  3M66


• 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 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
mTERF domain-containing protein 1, mitochondrial	A	270	Homo sapiens	Mutation(s): 0  Gene Names: CGI-12, MTERFD1, MTERF3
UniProt & NIH Common Fund Data Resources
Find proteins for Q96E29 (Homo sapiens) Explore Q96E29  Go to UniProtKB:  Q96E29
PHAROS:  Q96E29

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.199 
• R-Value Work: 0.173 
• R-Value Observed: 0.175 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 139.23	α = 90
b = 32.24	β = 106.59
c = 70.22	γ = 90

Software Package:

Software Name	Purpose
PHENIX	model building
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-03-15 
• Released Date: 2010-05-05 
Deposition Author(s): Spahr, H., Samuelsson, T., Hallberg, B.M., Gustafsson, C.M.

Revision History  

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