ISDA: 1AU6

Deposition Date 1997-09-11

Release Date 1998-02-25

Last Version Date 2024-05-22

Entry Detail

PDB ID:

1AU6

Keywords:

DNA

Title:

SOLUTION STRUCTURE OF DNA D(CATGCATG) INTERSTRAND-CROSSLINKED BY BISPLATIN COMPOUND (1,1/T,T), NMR, MINIMIZED AVERAGE STRUCTURE

Biological Source:

Source Organism:

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

Conformers Submitted:

Download Validation Report

Macromolecular Entities

Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(*CP*AP*TP*GP*CP*AP*TP*G)-3')
Chain IDs:A, B
Chain Length:8
Number of Molecules:2
Biological Source:

Ligand Molecules

BPT

Primary Citation

A novel DNA structure induced by the anticancer bisplatinum compound crosslinked to a GpC site in DNA.

Yang, D, van Boom, S.S, Reedijk, J, van Boom, J.H, Farrell, N, Wang, A.H, Yang, D, Yang, D, Wang, A.H.Show

Nat.Struct.Biol. 2 577 586 (1995)

PMID: 7664126 DOI: 10.1038/nsb0795-577

Abstact

The bifunctional platinum compound, [(trans-PtCI(NH)3)2)2(H2N(CH2)4NH2)]2+, forms a stable adduct with the self-complementary DNA oligomer CATGCATG, with the two platinum atoms coordinated at the N7 positions of the two symmetrical G4 nucleotides. The NMR-derived structure shows that the DNA octamer forms a novel hairpin structure with the platinated G4 residue adopting a syn conformation and the guanine base in the minor groove. Two such hairpins stack end-over-end and are linked together by the butanediamine tether to form a dumbbell structure. Such unusual structural distortion is different from that of the anticancer drug cisplatin-DNA adduct and may provide clues to explain the distinct biological activities of the two compounds.

Legend

Protein

Chemical

Disease

Primary Citation of related structures