Protein inhibitors that shift the thermodynamic equilibrium towards a denatured state escape, in general, the straightforward framework of competitive or allosteric inhibitors. The equilibrium properties of peptides which compete with the folding, or more precisely destabilize the native state, of the human immunodeficiency virus (HIV)-1 protease monomer are studied within a structure-based model. The effect of peptides that disrupt the hydrophobic core of the protein can still be summarized in terms of an inhibition constant, which depends on the thermal stability of the protein. The state of the protein denatured by such a peptide is more structured than its intrinsic denatured state, but displays the same degree of compactness. Peptides that target less buried regions of the protein are less efficient and display a more complex thermodynamics that cannot be captured in a simple way. © European Biophysical Societies' Association 2012.

Kimura, S., Broglia, R., Tiana, G. (2012). Thermodynamics of strongly allosteric inhibition: A model study of HIV-1 protease. EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS, 41(11), 991-1001 [10.1007/s00249-012-0862-0].

Thermodynamics of strongly allosteric inhibition: A model study of HIV-1 protease

Kimura S.
Primo
;
2012

Abstract

Protein inhibitors that shift the thermodynamic equilibrium towards a denatured state escape, in general, the straightforward framework of competitive or allosteric inhibitors. The equilibrium properties of peptides which compete with the folding, or more precisely destabilize the native state, of the human immunodeficiency virus (HIV)-1 protease monomer are studied within a structure-based model. The effect of peptides that disrupt the hydrophobic core of the protein can still be summarized in terms of an inhibition constant, which depends on the thermal stability of the protein. The state of the protein denatured by such a peptide is more structured than its intrinsic denatured state, but displays the same degree of compactness. Peptides that target less buried regions of the protein are less efficient and display a more complex thermodynamics that cannot be captured in a simple way. © European Biophysical Societies' Association 2012.
Articolo in rivista - Articolo scientifico
Computational models; Inhibition constant; Monte Carlo sampling; Allosteric Regulation; HIV Protease; Protease Inhibitors; Protein Folding; Protein folding inhibition; Protein Stability; Models, Chemical; Thermodynamics;
English
2012
41
11
991
1001
none
Kimura, S., Broglia, R., Tiana, G. (2012). Thermodynamics of strongly allosteric inhibition: A model study of HIV-1 protease. EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS, 41(11), 991-1001 [10.1007/s00249-012-0862-0].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/279558
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