Sequences and structures of some repetitive ice‐binding proteins. Antifreeze proteins from A) Pseudopleuronectes americanus (type I AFP), B) T. molitor, and C) Rhagium inquisitor. Key repetitive amino acids are colored: Thr (red), Ala (cyan), Cys (yellow), Ser (green). The N and C termini are labeled on the structures by N and C, respectively.