A leucine-rich repeat protein of carrot that exhibits antifreeze activity

Knut Meyer, Michael Keil, Michael J. Naldrett

Research output: Contribution to journalArticlepeer-review

104 Scopus citations


A gene encoding an antifreeze protein (AFP) was isolated from carrot (Daucus carota) using sequence information derived from the purified protein. The carrot AFP is highly similar to the polygalacturonase inhibitor protein (PGIP) family of apoplastic plant leucine-rich repeat (LRR) proteins. Expression of the AFP gene is rapidly induced by low temperatures. Furthermore, expression of the AFP gene in transgenic Arabidopsis thaliana plants leads to an accumulation of antifreeze activity. Our findings suggest that a new type of plant antifreeze protein has recently evolved from PGIPs. Copyright (C) 1999 Federation of European Biochemical Societies.

Original languageEnglish (US)
Pages (from-to)171-178
Number of pages8
JournalFEBS Letters
Issue number2-3
StatePublished - Mar 26 1999
Externally publishedYes


  • Antifreeze protein
  • Apoplast
  • Arabidopsis thaliana
  • Daucus carota
  • Leucine-rich repeat protein
  • Polygalacturonase inhibitor protein

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology


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