5TVP image
Deposition Date 2016-11-09
Release Date 2017-10-11
Last Version Date 2023-10-04
Entry Detail
PDB ID:
5TVP
Keywords:
hydrolase/dna
Title:
SUMO2 bound to Mouse Tdp2 catalytic domain with a 5'-phosphorylated DNA ternary complex
Biological Source:
Source Organism:
Mus musculus (Taxon ID: 10090)
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.40 Å
R-Value Free:
0.23
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 1 21 1
5TVP validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Tyrosyl-DNA phosphodiesterase 2
Gene (Uniprot):Tdp2
Chain IDs:A (auth: I), C (auth: O), F (auth: E), H (auth: G), J (auth: B), L (auth: A), N (auth: K), P (auth: M)
Chain Length:256
Number of Molecules:8
Biological Source:Mus musculus
UniProt ID:Q9JJX7 Pfam ID:PF03372
Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(P*CP*CP*GP*AP*AP*TP*TP*CP*G)-3')
Chain IDs:B (auth: J), D (auth: P), G (auth: F), I (auth: H), K (auth: C), M (auth: D), O (auth: L), Q (auth: N)
Chain Length:9
Number of Molecules:8
Biological Source:Homo sapiens
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Small ubiquitin-related modifier 2
Gene (Uniprot):Sumo2
Chain IDs:E (auth: Q)
Chain Length:81
Number of Molecules:1
Biological Source:Mus musculus
UniProt ID:P61957 Pfam ID:PF11976
Ligand Molecules
CL
EDO
PO4
Primary Citation
ZATT (ZNF451)-mediated resolution of topoisomerase 2 DNA-protein cross-links.
Science 357 1412 1416 (2017)
PMID: 28912134 DOI: 10.1126/science.aam6468

Abstact

Topoisomerase 2 (TOP2) DNA transactions proceed via formation of the TOP2 cleavage complex (TOP2cc), a covalent enzyme-DNA reaction intermediate that is vulnerable to trapping by potent anticancer TOP2 drugs. How genotoxic TOP2 DNA-protein cross-links are resolved is unclear. We found that the SUMO (small ubiquitin-related modifier) ligase ZATT (ZNF451) is a multifunctional DNA repair factor that controls cellular responses to TOP2 damage. ZATT binding to TOP2cc facilitates a proteasome-independent tyrosyl-DNA phosphodiesterase 2 (TDP2) hydrolase activity on stalled TOP2cc. The ZATT SUMO ligase activity further promotes TDP2 interactions with SUMOylated TOP2, regulating efficient TDP2 recruitment through a "split-SIM" SUMO2 engagement platform. These findings uncover a ZATT-TDP2-catalyzed and SUMO2-modulated pathway for direct resolution of TOP2cc.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
4GZ1
1WM2
5TVQ