A new look at an old view of denaturant induced protein unfolding.
Anal Biochem
; 542: 40-57, 2018 02 01.
Article
em En
| MEDLINE
| ID: mdl-29158130
ABSTRACT
We re-examine a site-binding approach independently proposed by Schellman (Schellman, J.A. (1958) Compt. rend. Lab. Carlsberg Ser. Chim. 30, 439-449) and Aune and Tanford (Aune, K.C. and Tanford, D. (1969) Biochemistry, 8, 4586-4590) for explicitly including the denaturant concentration within the protein unfolding equilibrium. We extend and formalize the approach through development of a multi-dimensional analytical model in which the folding reaction coordinate is defined by the number of denaturant molecules bound to sites located on either the initially folded, or unfolded, states of the protein. We use the developed method to re-examine the mechanistic determinants underlying the sigmoidal shape of the unfolding transition. A natural feature of our method is that it presents a landscape picture of the denaturant induced protein unfolding reaction.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Desnaturação Proteica
/
Proteínas
/
Desdobramento de Proteína
Idioma:
En
Revista:
Anal Biochem
Ano de publicação:
2018
Tipo de documento:
Article