3A5E

Crystal structure of 5K RNase Sa

3A5E の概要

• エントリーDOI: 10.2210/pdb3a5e/pdb
• 分子名称: Guanyl-specific ribonuclease Sa (2 entities in total)
• 機能のキーワード: rnase sa, 5k, disulfide bond, endonuclease, hydrolase, nuclease, secreted
• 由来する生物種: Streptomyces aureofaciens
• 細胞内の位置: Secreted: P05798
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 10624.90

構造登録者

Takano, K. (登録日: 2009-08-06, 公開日: 2010-08-04, 最終更新日: 2024-11-20)

主引用文献

Nick Pace, C.,Huyghues-Despointes, B.M.,Fu, H.,Takano, K.,Scholtz, J.M.,Grimsley, G.R.
Urea denatured state ensembles contain extensive secondary structure that is increased in hydrophobic proteins
Protein Sci., 19:929-943, 2010

PubMed Abstract: The goal of this article is to gain a better understanding of the denatured state ensemble (DSE) of proteins through an experimental and computational study of their denaturation by urea. Proteins unfold to different extents in urea and the most hydrophobic proteins have the most compact DSE and contain almost as much secondary structure as folded proteins. Proteins that unfold to the greatest extent near pH 7 still contain substantial amounts of secondary structure. At low pH, the DSE expands due to charge-charge interactions and when the net charge per residue is high, most of the secondary structure is disrupted. The proteins in the DSE appear to contain substantial amounts of polyproline II conformation at high urea concentrations. In all cases considered, including staph nuclease, the extent of unfolding by urea can be accounted for using the data and approach developed in the laboratory of Wayne Bolen (Auton et al., Proc Natl Acad Sci 2007; 104:15317-15323).

PubMed: 20198681
DOI: 10.1002/pro.370

実験手法

X-RAY DIFFRACTION (1.6 Å)