1QBJ

CRYSTAL STRUCTURE OF THE ZALPHA Z-DNA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.265 
  • R-Value Work: 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

  • Also Cited By: 1XMK

  • 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: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (DOUBLE-STRANDED RNA SPECIFIC ADENOSINE DEAMINASE (ADAR1))
A, B, C
81Homo sapiensMutation(s): 0 
Gene Names: ADAR (ADAR1, DSRAD, G1P1, IFI4)
EC: 3.5.4.37
Find proteins for P55265 (Homo sapiens)
Go to Gene View: ADAR
Go to UniProtKB:  P55265
Entity ID: 1
MoleculeChainsLengthOrganism
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: 2.1 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.227 
  • Space Group: P 4 21 2
Unit Cell:
Length (Å)Angle (°)
a = 85.900α = 90.00
b = 85.900β = 90.00
c = 71.300γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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