ISDA: 1NGT

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

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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

Primary Citation

The Role of Minor Groove Functional Groups in DNA Hydration

Woods, K.K, Lan, T, McLaughlin, L.W, Williams, L.D.Show

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.

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Protein

Chemical

Disease

Primary Citation of related structures

Abstact

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