A minimal protein folding model to measure hydrophobic and CH-π effects on interactions between nonpolar surfaces in water

被引:82
作者
Bhayana, Brijesh [1 ]
Wilcox, Craig S. [1 ]
机构
[1] Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA
关键词
conformation analysis; Gibbs energy hydrophobic; interactions; protein folding; solvent effects;
D O I
10.1002/anie.200700932
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
(Figure Presented) In the balance: A synthetic molecule that exhibits two-state folding behavior in water is described. Quantitative experiments reveal that the microscopic hydrophobic effect is similar in magnitude to the CH-π, interaction. These forces may therefore be equally important in the folding of aromatic-rich regions of proteins. The method allows a new approach to the direct measurement of excess surface energy associated with nonpolar surfaces. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:6833 / 6836
页数:4
相关论文
共 78 条
[1]   Molecular dynamics simulations of pentapeptides at interfaces:: Salt bridge and cation-π interactions [J].
Aliste, MP ;
MacCallum, JL ;
Tieleman, DP .
BIOCHEMISTRY, 2003, 42 (30) :8976-8987
[2]   HYDROPHOBIC CORE REPACKING AND AROMATIC AROMATIC INTERACTION IN THE THERMOSTABLE MUTANT OF T4 LYSOZYME SER 117-]PHE [J].
ANDERSON, DE ;
HURLEY, JH ;
NICHOLSON, H ;
BAASE, WA ;
MATTHEWS, BW .
PROTEIN SCIENCE, 1993, 2 (08) :1285-1290
[3]   PRINCIPLES THAT GOVERN FOLDING OF PROTEIN CHAINS [J].
ANFINSEN, CB .
SCIENCE, 1973, 181 (4096) :223-230
[4]  
[Anonymous], ANGEW CHEM
[5]   Cation-π interactions between ammonium ion and aromatic rings:: an energy decomposition study [J].
Aschi, M ;
Mazza, F ;
Di Nola, A .
JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM, 2002, 587 :177-188
[6]   Halogen bonds in biological molecules [J].
Auffinger, P ;
Hays, FA ;
Westhof, E ;
Ho, PS .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2004, 101 (48) :16789-16794
[7]   Additive transfer free energies of the peptide backbone unit that are independent of the model compound and the choice of concentration scale [J].
Auton, M ;
Bolen, DW .
BIOCHEMISTRY, 2004, 43 (05) :1329-1342
[8]   Binding of acetylcholine and tetramethylammonium to a cyclophane receptor:: Anion's contribution to the cation-π interaction [J].
Bartoli, S ;
Roelens, S .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (28) :8307-8315
[9]   AMINO-AROMATIC INTERACTIONS IN PROTEINS [J].
BURLEY, SK ;
PETSKO, GA .
FEBS LETTERS, 1986, 203 (02) :139-143
[10]   DIMERIZATION ENERGETICS OF BENZENE AND AROMATIC AMINO-ACID SIDE-CHAINS [J].
BURLEY, SK ;
PETSKO, GA .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (25) :7995-8001