1IAW image
Deposition Date 2001-03-23
Release Date 2001-08-03
Last Version Date 2024-04-03
Entry Detail
PDB ID:
1IAW
Keywords:
HYDROLASE/DNA
Title:
CRYSTAL STRUCTURE OF NAEI COMPLEXED WITH 17MER DNA
Biological Source:
Source Organism:
Lechevalieria aerocolonigenes (Taxon ID: 68170)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.40 Å
R-Value Free:
0.29
R-Value Work:
0.24
Space Group:
P 21 21 21
1IAW validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:TYPE II RESTRICTION ENZYME NAEI
Gene (Uniprot):naeIR
Chain IDs:E (auth: A), F (auth: B)
Chain Length:317
Number of Molecules:2
Biological Source:Lechevalieria aerocolonigenes
UniProt ID:P50187 Pfam ID:PF09126
Primary Citation
Structure of NaeI-DNA complex reveals dual-mode DNA recognition and complete dimer rearrangement.
Nat.Struct.Biol. 8 665 669 (2001)
PMID: 11473254 DOI: 10.1038/90366

Abstact

NaeI, a novel DNA endonuclease, shows topoisomerase and recombinase activities when a Lys residue is substituted for Leu 43. The NaeI-DNA structure demonstrates that each of the two domains of NaeI recognizes one molecule of DNA duplex. DNA recognition induces dramatic rearrangements: narrowing the binding site of the Topo domain 16 A to grip DNA, widening that of the Endo domain 8 A to encircle and bend DNA 45 degrees for cleavage, and completely rebuilding the homodimer interface. The NaeI-DNA structure presents the first example of novel recognition of two copies of one DNA sequence by two different amino acid sequences and two different structural motifs in one polypeptide.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
1EV7
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