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Science. 2005 Oct 21;310(5747):461.

Glycine-rich antifreeze proteins from snow fleas.

Author information

1
Department of Biochemistry, Queen's University, Kingston, ON K7L 3N6, Canada.

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.

PMID:
16239469
DOI:
10.1126/science.1115145
[Indexed for MEDLINE]
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