Ordered surface carbons distinguish antifreeze proteins and their ice-binding regions

Andrew C. Doxey, Mahmoud W. Yaish, Marilyn Griffith, Brendan J. McConkey

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Antifreeze proteins (AFPs) are found in cold-adapted organisms and have the unusual ability to bind to and inhibit the growth of ice crystals. However, the underlying molecular basis of their ice-binding activity is unclear because of the difficulty of studying the AFP-ice interaction directly and the lack of a common motif, domain or fold among different AFPs. We have formulated a generic ice-binding model and incorporated it into a physicochemical pattern-recognition algorithm. It successfully recognizes ice-binding surfaces for a diverse range of AFPs, and clearly discriminates AFPs from other structures in the Protein Data Bank. The algorithm was used to identify a novel AFP from winter rye, and the antifreeze activity of this protein was subsequently confirmed. The presence of a common and distinct physicochemical pattern provides a structural basis for unifying AFPs from fish, insects and plants.

Original languageEnglish
Pages (from-to)852-855
Number of pages4
JournalNature Biotechnology
Volume24
Issue number7
DOIs
Publication statusPublished - Jul 2006

ASJC Scopus subject areas

  • Microbiology

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