1DNM image
Deposition Date 1990-06-22
Release Date 1991-07-15
Last Version Date 2024-02-07
Entry Detail
PDB ID:
1DNM
Keywords:
DNA
Title:
CRYSTAL STRUCTURE AND SEQUENCE-DEPENDENT CONFORMATION OF THE A.G MIS-PAIRED OLIGONUCLEOTIDE D(CGCAAGCTGGCG)
Biological Source:
Source Organism:
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.50 Å
R-Value Observed:
0.19
Space Group:
P 21 21 21
1DNM validation report
Macromolecular Entities
Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(*CP*GP*CP*AP*AP*GP*CP*TP*GP*GP*CP*G)-3')
Chain IDs:A, B
Chain Length:12
Number of Molecules:2
Biological Source:
Primary Citation
Crystal structure and sequence-dependent conformation of the A.G mispaired oligonucleotide d(CGCAAGCTGGCG).
Proc.Natl.Acad.Sci.USA 87 6693 6697 (1990)
PMID: 2395870 DOI: 10.1073/pnas.87.17.6693

Abstact

The crystal structure of the dodecanucleotide d(CGCAAGCTGGCG) has been determined to a resolution of 2.5 A and refined to an R factor of 19.3% for 1710 reflections. The sequence crystallizes as a B-type double helix, with two G(anti).A(syn) base pairs. These are stabilized by three-center hydrogen bonds to pyrimidines that induce perturbations in base-pair geometry. The central AGCT region of the helix has a wide (greater than 6 A) minor groove.

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Primary Citation of related structures
1DNM