This chapter describes the interaction of antifreeze glycopeptides and peptides with ice and water. All antifreezes affect the morphology or habit of ice crystals both at low and high concentrations. Crystal habit modification is observed with all glycopeptide antifreezes and with three different peptide antifreezes from three different species, which include the winter flounder, the shorthorn sculpin, and the sea raven. In the intact fish, antifreeze adsorption-inhibition of ice growth could occur at endogenous sites or at peripheral sites, such as the integument water interface. The composition and best available estimates of size for the antifreeze glycopeptides and peptides are given in a tabulated form in the chapter for several cold-water species. Fluids that lack antifreeze, such as urine and ocular fluids, appear to be protected in part from ice formation or the invasion of ice because the interstitial fluid within the tissues surrounding them contains antifreeze.
ASJC Scopus subject areas
- Molecular Biology