1NGT image
Deposition Date 2002-12-17
Release Date 2003-03-04
Last Version Date 2024-02-14
Entry Detail
PDB ID:
1NGT
Keywords:
DNA
Title:
The Role of Minor Groove Functional Groups in DNA Hydration
Biological Source:
Source Organism:
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.04 Å
R-Value Free:
0.28
R-Value Work:
0.20
R-Value Observed:
0.22
Space Group:
P 21 21 21
1NGT validation report
Macromolecular Entities
Polymer Type:polydeoxyribonucleotide
Molecule:5'-D(*CP*GP*CP*GP*AP*AP*(MTR)P*TP*CP*GP*CP*G)-3'
Chain IDs:A, B
Chain Length:12
Number of Molecules:2
Biological Source:
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MTR A DT ?
Ligand Molecules
MG
Primary Citation
The Role of Minor Groove Functional Groups in DNA Hydration
Nucleic Acids Res. 31 1536 1540 (2003)
PMID: 12595562 DOI: 10.1093/nar/gkg240

Abstact

Here we describe the crystal structure of modified [d(CGCGAATTCGCG)]2 refined to 2.04 A. The modification, which affects only the two thymines at the central ApT step, involves isosteric removal of the 2-keto oxygen atoms and substitution of the N1 nitrogen with carbon. The crystal structure reveals the ability of this modified thymine to effectively base pair with adenine in [d(CGCGAAtTCGCG)]2. The structure also suggests that the minor groove 'spine of hydration' is destabilized but essentially intact.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
1NGT