1AF5

GROUP I MOBILE INTRON ENDONUCLEASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.373 
  • R-Value Work: 0.248 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structure of I-Crel, a group I intron-encoded homing endonuclease.

Heath, P.J.Stephens, K.M.Monnat Jr., R.J.Stoddard, B.L.

(1997) Nat.Struct.Mol.Biol. 4: 468-476


  • PubMed Abstract: 
  • The structure of I-Crel provides the first view of a protein encoded by a gene within an intron. This endonuclease recognizes a long DNA site approximately 20 base pairs in length and facilitates the lateral transfer of that intron. The protein exhib ...

    The structure of I-Crel provides the first view of a protein encoded by a gene within an intron. This endonuclease recognizes a long DNA site approximately 20 base pairs in length and facilitates the lateral transfer of that intron. The protein exhibits a DNA-binding surface consisting of four antiparallel beta-strands that form a 20 A wide groove which is over 70 A long. The architecture of this fold is different from that of the TATA binding protein, TBP, which also contains an antiparallel beta-saddle. The conserved LAGLIDADG motif, which is found in many mobile intron endonucleases, maturases and inteins, forms a novel helical interface and contributes essential residues to the active site.


    Organizational Affiliation

    Fred Hutchinson Cancer Research Center, Division of Basic Sciences, Seattle, Washington 98104, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
I-CREI
A
135Chlamydomonas reinhardtiiEC: 3.1.-.-
Find proteins for P05725 (Chlamydomonas reinhardtii)
Go to UniProtKB:  P05725
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.373 
  • R-Value Work: 0.248 
  • Space Group: P 3 2 1
Unit Cell:
Length (Å)Angle (°)
a = 78.200α = 90.00
b = 78.200β = 90.00
c = 67.400γ = 120.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-07-23
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance