Abstract
We have carried out a molecular dynamics simulation for the mixture of an ice nucleus, supercooled water and a model of amino-acid polypeptide. This nucleus has a hexagonal-shaped crystal. The model has a right-handed helical structure which represents a part of the antifreeze protein type I. It is found from our analysis that the hydroxyl group of one threonine residue is closest to the prism plane of the ice. This is due to the hydrogen bond between the water molecules in ice and the clustering water molecules in liquid phase near the threonine residue.
