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Glycoprotein Nature of Lipolytic Acyl Hydrolases in Potato Tubers and Leaves

  • Robert A. Moreau
  • Gerald Nagahashi

Abstract

The leaves and tubers of potatoes contain high levels of lipolytic acyl hydrolase activities (1, 2, 3). These enzymes are capable of hydrolyzing all endogenous phospholipids and galactolipids. It was recently reported that all of the lipolytic acyl hydrolase activity in potato tubers is associated with a glycoprotein fraction called “patatin” which comprises about 30% of the soluble protein in tubers (4). This study was undertaken in order to verify whether this finding was valid for other varieties of potatoes (in ref 4 Kennebec was the only variety studied). In addition, experiments were also conducted to determine whether the lipolytic enzymes in potato leaves were also associated with patatin or other glycoproteins.

Keywords

Potato Tuber DEAE Cellulose Hydrolase Activity Lipolytic Enzyme Phospholipase Activity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    H. Matsuda and O. Hirayama, Purification and properties of a lipolytic acyl hydrolase form potato leaves, Biochem. Biophys. Acta. 573: 155 (1979).PubMedGoogle Scholar
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    R. A. Moreau, Regulation of phospholipase activity in potato leaves by protein phosphorylation-dephosphorylation, Plant Science (in press).Google Scholar
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    D. Racusen, Lipid acyl hydrolase of patatin, Can. J. Bot. 62: 1640 (1984).CrossRefGoogle Scholar
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Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • Robert A. Moreau
    • 1
  • Gerald Nagahashi
    • 1
  1. 1.Eastern Regional Research Center, Agriculture Research ServiceU.S. Department of AgriculturePhiladelphiaUSA

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