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Evolution of the diverse antifreeze proteins
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Abstract
Different types of ice-growth-inhibiting antifreeze proteins, first recognized in
fish, have now been isolated from insects and plants, and the list continues to expand.
Their structures are amazingly diverse; how they attain the same function are subjects
of intense research. Evolutionary precursors of several members have been identified
- divergent proteins of apparently unrelated function. The hybridization of information
from structural and molecular evolution studies of these molecules provides a forum
in which issues of selection, gene genealogy, adaptive evolution, and invention of
a novel function can be coherently addressed.