Patatin is a glycoprotein
found in potatoes
(Solanum tuberosum). These glycoproteins show lipid acyl hydrolase
activity. The main function of patatin is as a storage protein but it also has lipase activity and
can cleave fatty
acids from membrane lipids. The patatin protein makes up about 40% of the
soluble protein in potato tubers.
The patatin-associated lipolytic activity may be a means of
defence against plant parasites and has been shown to function in plant signal
transduction
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