and forming water− water hydrogen bonds is slower in the first solvation shell of a 16-
residue polypeptide than in bulk water. The correlation time of hydrogen bonds persists
significantly longer near hydrophobic groups than in bulk water. Hydrogen bonds are found
to be stronger in the solvation shell of nonpolar groups. We show that the difference in
hydrogen-bond kinetics in the different environments can be understood in terms of the …