Isolation, characterization, and physical properties of protein antifreezes from the winter flounder, Pseudopleuronectes americanus

John G. Duman, Arthur L. DeVries

Research output: Contribution to journalArticlepeer-review

Abstract

1. 1. Three proteins with an unusual ability to depress the freezing point of water have been purified from the blood serum of the winter flounder, Pseudopleuronectes americanus. 2. 2. The amino acid compositions of these proteins are essentially the same and consist of large amounts of alanine, threonine and aspartic acid. 3. 3. The flounder protein antifreeze is quite different compositionally from the glycoprotein antifreeze previously isolated from antarctic nototheniid fishes. Therefore it seems that macromolecular antifreeze solutes have evolved independently in fishes at least twice.

Original languageEnglish (US)
Pages (from-to)375-380
Number of pages6
JournalComparative Biochemistry and Physiology -- Part B: Biochemistry and
Volume54
Issue number3
DOIs
StatePublished - 1976
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physiology
  • Molecular Biology

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