2JXQ

NMR structure of RNA duplex

2JXQ の概要

• エントリーDOI: 10.2210/pdb2jxq/pdb
• NMR情報: BMRB: 15571
• 分子名称: RNA (5'-R(*GP*CP*AP*GP*AP*GP*AP*GP*CP*G)-3'), RNA (5'-R(*CP*GP*CP*UP*CP*UP*CP*UP*GP*C)-3') (2 entities in total)
• 機能のキーワード: rna, duplex, a-type
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 6368.91

構造登録者

Popenda, L.,Adamiak, R.W.,Gdaniec, Z. (登録日: 2007-11-28, 公開日: 2008-05-20, 最終更新日: 2024-05-01)

主引用文献

Popenda, L.,Adamiak, R.W.,Gdaniec, Z.
Bulged adenosine influence on the RNA duplex conformation in solution.
Biochemistry, 47:5059-5067, 2008

PubMed Abstract: The RNA single bulge motif is an unpaired residue within a strand of several complementary base pairs. To gain insight into structural changes induced by the presence of the adenosine bulge on RNA duplex, the solution structures of RNA duplex containing a single adenine bulge (5'-GCAGAAGAGCG-3'/5'-CGCUCUCUGC-3') and a reference duplex with all Watson-Crick base pairs (5'-GCAGAGAGCG-3'/5'-CGCUCUCUGC-3') have been determined by NMR spectroscopy. The reference duplex structure is a regular right-handed helix with all of the attributes of an A-type helix. In the bulged duplex, single adenine bulge stacks into the helix, and the bulge region forms a well-defined structure. Both structures were analyzed by the use of calculated helical parameters. Distortions induced by the accommodation of unpaired residue into the helical structure propagate over the entire structure and are manifested as the reduced base pairs inclination and x-displacement. Intrahelical position of bulged adenine A5 is stabilized by efficient stacking with 5'-neighboring residues G4.

PubMed: 18399645
DOI: 10.1021/bi7024904

実験手法

SOLUTION NMR