Glycine-Rich Antifreeze Proteins from Snow Fleas
- 21 October 2005
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 310 (5747) , 461
- https://doi.org/10.1126/science.1115145
Abstract
We purified antifreeze proteins from winter-active snow fleas, Hypogastrura harveyi . These 6.5- and 15.7-kilodalton thermolabile proteins are glycine-rich (45% of the residues), and the short isoform is composed of the tripeptide repeat Gly-X-X. This makes them very different from other antifreeze proteins, including two from insects, suggesting independent adaptation to freezing environments.Keywords
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