Water is essential to all living cells. It serves as a medium for biological reactions, solute transport and interaction, and regulation of intracellular pH. It is also one of the reactants in many biochemical reactions, and contributes to the stabilization of various macromolecular structures. Any significant deviation on the accessibility of water due to dehydration, dessication and the alteration of its physical state from aqueous phase to ice crystal will pose a severe threat to the normal function and survival of organisms [1]. For many organisms, it is both desirable and important to have the ability to counteract or minimize these threats. The production of specific protein molecules to prevent the loss of water or to inhibit extracellular ice crystal growth are the better known examples.