2A2E

Crystal structure of the RNA subunit of Ribonuclease P. Bacterial A-type.

2A2E の概要

• エントリーDOI: 10.2210/pdb2a2e/pdb
• 関連するPDBエントリー: 1NBS 1U9S
• 分子名称: RNA subunit of RNase P, OSMIUM ION (2 entities in total)
• 機能のキーワード: rnase p, ribonuclease p rna, p rna, ribozyme, trna, pre-trna, thermotoga maritima, tetraloop-receptor, t-loop, coaxial helices, ribose zippers, rna
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 112901.94

構造登録者

Torres-Larios, A.,Swinger, K.K.,Krasilnikov, A.S.,Pan, T.,Mondragon, A. (登録日: 2005-06-22, 公開日: 2005-09-06, 最終更新日: 2023-08-23)

主引用文献

Torres-Larios, A.,Swinger, K.K.,Krasilnikov, A.S.,Pan, T.,Mondragon, A.
Crystal structure of the RNA component of bacterial ribonuclease P.
Nature, 437:584-587, 2005

PubMed Abstract: Transfer RNA (tRNA) is produced as a precursor molecule that needs to be processed at its 3' and 5' ends. Ribonuclease P is the sole endonuclease responsible for processing the 5' end of tRNA by cleaving the precursor and leading to tRNA maturation. It was one of the first catalytic RNA molecules identified and consists of a single RNA component in all organisms and only one protein component in bacteria. It is a true multi-turnover ribozyme and one of only two ribozymes (the other being the ribosome) that are conserved in all kingdoms of life. Here we show the crystal structure at 3.85 A resolution of the RNA component of Thermotoga maritima ribonuclease P. The entire RNA catalytic component is revealed, as well as the arrangement of the two structural domains. The structure shows the general architecture of the RNA molecule, the inter- and intra-domain interactions, the location of the universally conserved regions, the regions involved in pre-tRNA recognition and the location of the active site. A model with bound tRNA is in agreement with all existing data and suggests the general basis for RNA-RNA recognition by this ribozyme.

PubMed: 16113684
DOI: 10.1038/nature04074

実験手法

X-RAY DIFFRACTION (3.85 Å)