Article
Local stability identification and the role of key acidic amino acid residues in staphylococcal nuclease unfolding.
The FEBS journal - 1 Aug 2005
Chen Hueih-Min, Chan Siu-Chiu, Leung King-Wong, Wu Jiun-Ming, Fang Huey-Jen, Tsong Tian Yow
Abstract excerpt
Staphylococcal nuclease is a single domain protein with 149 amino acids. It has no disulfide bonds, which makes it a simple model for the study of protein folding. In this study, 20 mutants of this protein were generated each with a single base substitution of glycine for negatively charged glutamic acid or aspartic acid. Using differential scanning microcalorimetry in thermal denaturation experiments, we...
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