103D

THE UNUSUAL STRUCTURE OF THE HUMAN CENTROMERE (GGA)2 MOTIF: UNPAIRED GUANOSINE RESIDUES STACKED BETWEEN SHEARED G(DOT)A PAIRS


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

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This is version 1.3 of the entry. See complete history


Literature

The unusual structure of the human centromere (GGA)2 motif. Unpaired guanosine residues stacked between sheared G.A pairs.

Chou, S.H.Zhu, L.Reid, B.R.

(1994) J Mol Biol 244: 259-268

  • DOI: 10.1006/jmbi.1994.1727
  • Primary Citation of Related Structures:  
    103D

  • PubMed Abstract: 
  • The centromere of human chromosomes contains multiple repeats of the DNA sequence d(TGGAA)n. This sequence has the interesting property of pairing with itself to form stable duplexes. We have determined the solution structure of the unusual DNA duplex 5'-TGGAATGGAA:TGGAATGGAA-3' at atomic resolution ...

    The centromere of human chromosomes contains multiple repeats of the DNA sequence d(TGGAA)n. This sequence has the interesting property of pairing with itself to form stable duplexes. We have determined the solution structure of the unusual DNA duplex 5'-TGGAATGGAA:TGGAATGGAA-3' at atomic resolution. The duplex contains unpaired staggered guanosine residues, which co-stack by intercalation between sheared G.A and A.G base-pairs to form an interesting new structural motif, the GA-bracketed G-stack. The TGGAA repeat unit contains six "steps", four of which are not Watson-Crick base-pairs.


    Organizational Affiliation

    Howard Hughes Medical Institute, University of Washington, Seattle 98195.



Macromolecules

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Entity ID: 1
MoleculeChainsLengthOrganismImage
DNA (5'-D(*GP*TP*GP*GP*AP*AP*TP*GP*GP*AP*AP*C)-3')A, B12N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-03-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-16
    Changes: Data collection, Database references, Derived calculations, Other