1OTC

THE O. NOVA TELOMERE END BINDING PROTEIN COMPLEXED WITH SINGLE STRAND DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the Oxytricha nova telomere end binding protein complexed with single strand DNA.

Horvath, M.P.Schweiker, V.L.Bevilacqua, J.M.Ruggles, J.A.Schultz, S.C.

(1998) Cell 95: 963-974


  • PubMed Abstract: 
  • Telomeres are specialized protein-DNA complexes that compose the ends of eukaryotic chromosomes. Telomeres protect chromosome termini from degradation and recombination and act together with telomerase to ensure complete genome replication. We have d ...

    Telomeres are specialized protein-DNA complexes that compose the ends of eukaryotic chromosomes. Telomeres protect chromosome termini from degradation and recombination and act together with telomerase to ensure complete genome replication. We have determined the crystal structure of the two-subunit Oxytricha nova telomere end binding protein (OnTEBP) complexed with single strand telomeric DNA at 2.8 A resolution. The structure reveals four oligonucleotide/oligosaccharide-binding folds, three of which form a deep cleft that binds the ssDNA, and a fourth that forms an unusual protein-protein interaction between the alpha and beta subunits. This structure provides a molecular description of how the two subunits of OnTEBP recognize and bind ssDNA to form a sequence-specific, telomeric nucleoprotein complex that caps the very 3' ends of chromosomes.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Colorado, Boulder 80309-0215, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (TELOMERE-BINDING PROTEIN ALPHA SUBUNIT)
A
495Sterkiella novaGene Names: MAC-56A, MAC-56K, MAC-56S
Find proteins for P29549 (Sterkiella nova)
Go to UniProtKB:  P29549
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (TELOMERE-BINDING PROTEIN BETA SUBUNIT)
B
260Sterkiella novaGene Names: MAC-41A, MAC-41S
Find proteins for P16458 (Sterkiella nova)
Go to UniProtKB:  P16458
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*GP*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*G)-3')D12N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.251 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 94.500α = 90.00
b = 94.500β = 90.00
c = 426.200γ = 120.00
Software Package:
Software NamePurpose
MLPHAREphasing
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-04-12
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance