1QBJ

CRYSTAL STRUCTURE OF THE ZALPHA Z-DNA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal structure of the Zalpha domain of the human editing enzyme ADAR1 bound to left-handed Z-DNA.

Schwartz, T.Rould, M.A.Lowenhaupt, K.Herbert, A.Rich, A.

(1999) Science 284: 1841-1845

  • DOI: 10.1126/science.284.5421.1841
  • Primary Citation of Related Structures:  
    1QBJ

  • PubMed Abstract: 
  • The editing enzyme double-stranded RNA adenosine deaminase includes a DNA binding domain, Zalpha, which is specific for left-handed Z-DNA. The 2.1 angstrom crystal structure of Zalpha complexed to DNA reveals that the substrate is in the left-handed ...

    The editing enzyme double-stranded RNA adenosine deaminase includes a DNA binding domain, Zalpha, which is specific for left-handed Z-DNA. The 2.1 angstrom crystal structure of Zalpha complexed to DNA reveals that the substrate is in the left-handed Z conformation. The contacts between Zalpha and Z-DNA are made primarily with the "zigzag" sugar-phosphate backbone, which provides a basis for the specificity for the Z conformation. A single base contact is observed to guanine in the syn conformation, characteristic of Z-DNA. Intriguingly, the helix-turn-helix motif, frequently used to recognize B-DNA, is used by Zalpha to contact Z-DNA.


    Organizational Affiliation

    Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (DOUBLE-STRANDED RNA SPECIFIC ADENOSINE DEAMINASE (ADAR1))ABC81Homo sapiensMutation(s): 0 
Gene Names: ADARADAR1DSRADG1P1IFI4
EC: 3.5.4.37
Find proteins for P55265 (Homo sapiens)
Explore P55265 
Go to UniProtKB:  P55265
NIH Common Fund Data Resources
PHAROS  P55265
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*TP*CP*GP*CP*GP*CP*G)-3')D, E, F7N/A
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.10 Å
    • R-Value Free: 0.265 
    • R-Value Work: 0.227 
    • R-Value Observed: 0.227 
    • Space Group: P 4 21 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 85.9α = 90
    b = 85.9β = 90
    c = 71.3γ = 90
    Software Package:
    Software NamePurpose
    SOLVEphasing
    X-PLORrefinement
    DENZOdata reduction
    SCALEPACKdata scaling

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History 

    • Version 1.0: 1999-07-02
      Type: Initial release
    • Version 1.1: 2008-04-27
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance
    • Version 1.3: 2011-11-16
      Changes: Atomic model