3UGM

Structure of TAL effector PthXo1 bound to its DNA target


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.266 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Crystal Structure of TAL Effector PthXo1 Bound to Its DNA Target.

Mak, A.N.Bradley, P.Cernadas, R.A.Bogdanove, A.J.Stoddard, B.L.

(2012) Science 335: 716-719

  • DOI: 10.1126/science.1216211

  • PubMed Abstract: 
  • DNA recognition by TAL effectors is mediated by tandem repeats, each 33 to 35 residues in length, that specify nucleotides via unique repeat-variable diresidues (RVDs). The crystal structure of PthXo1 bound to its DNA target was determined by high-th ...

    DNA recognition by TAL effectors is mediated by tandem repeats, each 33 to 35 residues in length, that specify nucleotides via unique repeat-variable diresidues (RVDs). The crystal structure of PthXo1 bound to its DNA target was determined by high-throughput computational structure prediction and validated by heavy-atom derivatization. Each repeat forms a left-handed, two-helix bundle that presents an RVD-containing loop to the DNA. The repeats self-associate to form a right-handed superhelix wrapped around the DNA major groove. The first RVD residue forms a stabilizing contact with the protein backbone, while the second makes a base-specific contact to the DNA sense strand. Two degenerate amino-terminal repeats also interact with the DNA. Containing several RVDs and noncanonical associations, the structure illustrates the basis of TAL effector-DNA recognition.


    Organizational Affiliation

    Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, A3-025 Seattle, WA 98019, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TAL effector AvrBs3/PthA
A
1047Xanthomonas oryzae pv. oryzae (strain PXO99A)Gene Names: pthXo1 (tal2b)
Find proteins for B2SU53 (Xanthomonas oryzae pv. oryzae (strain PXO99A))
Go to UniProtKB:  B2SU53
Entity ID: 2
MoleculeChainsLengthOrganism
DNA-1B38N/A
Entity ID: 3
MoleculeChainsLengthOrganism
DNA-2C38N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.266 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 95.578α = 90.00
b = 248.481β = 90.00
c = 54.646γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
CNSrefinement
SCALEPACKdata scaling
PHASESphasing
PDB_EXTRACTdata extraction
REFMACrefinement
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-01-04
    Type: Initial release
  • Version 1.1: 2012-01-25
    Type: Database references
  • Version 1.2: 2012-02-22
    Type: Database references