1ZR4 image
Deposition Date 2005-05-19
Release Date 2005-08-30
Last Version Date 2024-11-20
Entry Detail
PDB ID:
1ZR4
Keywords:
RECOMBINATION/DNA
Title:
Structure of a Synaptic gamma-delta Resolvase Tetramer Covalently linked to two Cleaved DNAs
Biological Source:
Source Organism:
Escherichia coli (Taxon ID: 562)
(Taxon ID: )
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.40 Å
R-Value Free:
0.29
R-Value Work:
0.26
R-Value Observed:
0.26
Space Group:
P 21 21 21
1ZR4 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Transposon gamma-delta resolvase
Gene (Uniprot):tnpR
Mutations:G101S, E102Y, M103I, E124Q, R2A, E56K
Chain IDs:M (auth: A), N (auth: B), O (auth: E), P (auth: D)
Chain Length:183
Number of Molecules:4
Biological Source:Escherichia coli
UniProt ID:P03012 Pfam ID:PF00239, PF02796
Polymer Type:polydeoxyribonucleotide
Molecule:TCAGTGTCCGATAATTTAT
Chain IDs:A (auth: X), D (auth: J), G (auth: U), J (auth: M)
Chain Length:19
Number of Molecules:4
Biological Source:
Polymer Type:polydeoxyribonucleotide
Molecule:TTATCGGACACTG
Chain IDs:C (auth: Y), F (auth: K), I (auth: V), L (auth: N)
Chain Length:13
Number of Molecules:4
Biological Source:
Polymer Type:polydeoxyribonucleotide
Molecule:AAA
Chain IDs:B (auth: Z), E (auth: I), H (auth: W), K (auth: O)
Chain Length:3
Number of Molecules:4
Biological Source:
Ligand Molecules
NA
Primary Citation
Structure of a synaptic gamma delta resolvase tetramer covalently linked to two cleaved DNAs.
Science 309 1210 1215 (2005)
PMID: 15994378 DOI: 10.1126/science.1112064

Abstact

The structure of a synaptic intermediate of the site-specific recombinase gammadelta resolvase covalently linked through Ser10 to two cleaved duplex DNAs has been determined at 3.4 angstrom resolution. This resolvase, activated for recombination by mutations, forms a tetramer whose structure is substantially changed from that of a presynaptic complex between dimeric resolvase and the cleavage site DNA. Because the two cleaved DNA duplexes that are to be recombined lie on opposite sides of the core tetramer, large movements of both protein and DNA are required to achieve strand exchange. The two dimers linked to the DNAs that are to be recombined are held together by a flat interface. This may allow a 180 degrees rotation of one dimer relative to the other in order to reposition the DNA duplexes for strand exchange.

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Disease

Primary Citation of related structures
1ZR2
1GDT
2RSL
1GDR