1JUX image
Deposition Date 2001-08-28
Release Date 2004-01-27
Last Version Date 2024-02-07
Entry Detail
PDB ID:
1JUX
Keywords:
DNA
Title:
1.6A Resolution Crystal Structures of the DNA Octamers d(IUATATAC) and d(ITITACAC):Binding of Two Distamycin Drugs Side-by-Side
Biological Source:
Source Organism:
(Taxon ID: ) (Taxon ID: )
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.60 Å
R-Value Free:
0.17
R-Value Work:
0.14
Space Group:
C 1 2 1
1JUX validation report
Macromolecular Entities
Polymer Type:polydeoxyribonucleotide
Molecule:5'-D(*IP*TP*IP*TP*AP*CP*AP*C)-3'
Chain IDs:A
Chain Length:8
Number of Molecules:1
Biological Source:
Ligand Molecules
DMY
Primary Citation
Structure of d(ITITACAC) complexed with distamycin at 1.6 A resolution.
Acta Crystallogr.,Sect.D 59 2342 2344 (2003)
PMID: 14646114 DOI: 10.1107/S0907444903020730

Abstact

The crystal structure of the DNA octamer d(ITITACAC)(2) complexed with distamycin has been determined at 1.6 A resolution and refined to a final R(work) and R(free) of 17.0 and 20.7%, respectively. Two molecules of distamycin bind to the DNA duplex in an antiparallel side-by-side fashion. Each drug molecule covers five base pairs of the DNA duplex, with its amide groups hydrogen-bonding to bases in the proximal DNA strand. These two antiparallel drug molecules are stacked together with the pyrrole rings of one molecule stacking against the amide groups of the other. The present structure emphasizes the features of alternating DNA octamers in interaction with distamycin.

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Primary Citation of related structures
1JUZ