1MOW image
Deposition Date 2002-09-10
Release Date 2002-11-29
Last Version Date 2024-02-14
Entry Detail
PDB ID:
1MOW
Keywords:
Title:
E-DreI
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.40 Å
R-Value Free:
0.25
R-Value Work:
0.23
Space Group:
P 31
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:chimera of homing endonuclease I-DmoI and DNA endonuclease I-CreI
Chain IDs:I (auth: A), J (auth: D), K (auth: G), L (auth: J)
Chain Length:260
Number of Molecules:4
Biological Source:Desulfurococcus mobilis, Chlamydomonas reinhardtii
Primary Citation
Design, Activity and Structure of a Highly Specific Artificial Endonuclease
Mol.Cell 10 895 905 (2002)
PMID: 12419232 DOI: 10.1016/S1097-2765(02)00690-1

Abstact

We have generated an artificial highly specific endonuclease by fusing domains of homing endonucleases I-DmoI and I-CreI and creating a new 1400 A(2) protein interface between these domains. Protein engineering was accomplished by combining computational redesign and an in vivo protein-folding screen. The resulting enzyme, E-DreI (Engineered I-DmoI/I-CreI), binds a long chimeric DNA target site with nanomolar affinity, cleaving it precisely at a rate equivalent to its natural parents. The structure of an E-DreI/DNA complex demonstrates the accuracy of the protein interface redesign algorithm and reveals how catalytic function is maintained during the creation of the new endonuclease. These results indicate that it may be possible to generate novel highly specific DNA binding proteins from homing endonucleases.

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