1DK9

SOLUTION STRUCTURE ANALYSIS OF THE DNA DUPLEX D(CATGAGTAC)D(GTACTCATG)

1DK9 の概要

• エントリーDOI: 10.2210/pdb1dk9/pdb
• 関連するPDBエントリー: 1DK6
• 分子名称: 5'-D(CP*AP*TP*GP*AP*GP*TP*AP*CP*)-3', 5'-D(GP*TP*AP*CP*TP*CP*AP*TP*GP*)-3' (2 entities in total)
• 機能のキーワード: dna, duplex
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 5470.63

構造登録者

Klewer, D.A.,Hoskins, A.,Davisson, V.J.,Bergstrom, D.E.,LiWang, A.C. (登録日: 1999-12-06, 公開日: 1999-12-16, 最終更新日: 2024-05-22)

主引用文献

Klewer, D.A.,Hoskins, A.,Zhang, P.,Davisson, V.J.,Bergstrom, D.E.,LiWang, A.C.
NMR structure of a DNA duplex containing nucleoside analog 1-(2'-deoxy-beta-D-ribofuranosyl)-3-nitropyrrole and the structure of the unmodified control.
Nucleic Acids Res., 28:4514-4522, 2000

PubMed Abstract: The three-dimensional structures of two DNA duplexes d(CATGAGTAC). d(GTACXCATG) (1) and d(CATGAGTAC).d(GTACTCATG) (2), where X represents 1-(2'-deoxy-beta-D-ribofuranosyl)-3-nitropyrrole, were solved using high resolution nuclear magnetic resonance spectroscopy and restrained molecular dynamics. Good convergence was observed between final structures derived from A- and B-form starting geometries for both 1 and 2. Structures of 1 and 2 are right-handed duplexes within the B-form conformational regime. Furthermore, the structures of 1 and 2 are highly similar, with differences in the structures localized to the vicinity of residue 14 (X versus T). The pyrrole group of 1 is in the syn conformation and it is displaced towards the major groove. Furthermore, unlike T14 in 2, the base of X14 has reduced pi-pi stacking interactions with C13 and C15 and the nitro group of X14 is pointing out of the major groove. The structures presented here establish the basis of the thermal data of DNA duplexes containing X and should be informative during the design of improved wild card nucleobase analogs.

PubMed: 11071940
DOI: 10.1093/nar/28.22.4514

実験手法

SOLUTION NMR