8BU8

Double-motif Single-stranded Paranemic Crossover RNA Triangle (2PXT)

8BU8 の概要

• エントリーDOI: 10.2210/pdb8bu8/pdb
• EMDBエントリー: 16245
• 分子名称: RNA (354-MER) (1 entity in total)
• 機能のキーワード: rna origami, nanostructure, self-assembly, rna
• 由来する生物種: synthetic construct
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 113647.59

構造登録者

Sampedro, N.,Andersen, E.S.,McRae, E.K.S. (登録日: 2022-11-30, 公開日: 2024-01-24)

主引用文献

Sampedro Vallina, N.,McRae, E.K.S.,Geary, C.,Andersen, E.S.
An RNA Paranemic Crossover Triangle as A 3D Module for Cotranscriptional Nanoassembly.
Small, 19:e2204651-e2204651, 2023

PubMed Abstract: RNA nanotechnology takes advantage of structural modularity to build self-assembling nano-architectures with applications in medicine and synthetic biology. The use of paranemic motifs, that form without unfolding existing secondary structure, allows for the creation of RNA nanostructures that are compatible with cotranscriptional folding in vitro and in vivo. In previous work, kissing-loop (KL) motifs have been widely used to design RNA nanostructures that fold cotranscriptionally. However, the paranemic crossover (PX) motif has not yet been explored for cotranscriptional RNA origami architectures and information about the structural geometry of the motif is unknown. Here, a six base pair-wide paranemic RNA interaction that arranges double helices in a perpendicular manner is introduced, allowing for the generation of a new and versatile building block: the paranemic-crossover triangle (PXT). The PXT is self-assembled by cotranscriptional folding and characterized by cryogenic electron microscopy, revealing for the first time an RNA PX interaction in high structural detail. The PXT is used as a building block for the construction of multimers that form filaments and rings and a duplicated PXT motif is used as a building block to self-assemble cubic structures, demonstrating the PXT as a rigid self-folding domain for the development of wireframe RNA origami architectures.

PubMed: 36526605
DOI: 10.1002/smll.202204651

実験手法

ELECTRON MICROSCOPY (6.56 Å)