1OTC

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.251 
  • R-Value Observed: 0.251 

wwPDB Validation   3D Report Full Report


This is version 1.3 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

  • DOI: 10.1016/s0092-8674(00)81720-1
  • Primary Citation of Related Structures:  
    1OTC

  • 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 determined the crystal structure of the two-subunit Oxytricha nova telomere end binding protein (OnTEBP) complexed with single strand telomeric DNA at 2 ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (TELOMERE-BINDING PROTEIN ALPHA SUBUNIT)B [auth A]495Sterkiella novaMutation(s): 0 
Gene Names: MAC-56AMAC-56KMAC-56S
Find proteins for P29549 (Sterkiella nova)
Explore P29549 
Go to UniProtKB:  P29549
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (TELOMERE-BINDING PROTEIN BETA SUBUNIT)C [auth B]260Sterkiella novaMutation(s): 0 
Gene Names: MAC-41AMAC-41S
Find proteins for P16458 (Sterkiella nova)
Explore P16458 
Go to UniProtKB:  P16458
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*GP*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*G)-3')A [auth D]12N/A
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.80 Å
    • R-Value Free: 0.292 
    • R-Value Work: 0.251 
    • R-Value Observed: 0.251 
    • Space Group: P 61 2 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 94.5α = 90
    b = 94.5β = 90
    c = 426.2γ = 120
    Software Package:
    Software NamePurpose
    MLPHAREphasing
    CNSrefinement
    DENZOdata reduction
    SCALEPACKdata scaling

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History  (Full details and data files)

    • Version 1.0: 1999-04-12
      Type: Initial release
    • Version 1.1: 2008-04-26
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance
    • Version 1.3: 2018-04-04
      Changes: Data collection