Cutin, a polymeric structural component of plant cuticles, is a polymer of hydroxy fatty acids that are usually C16 or C18 and contain up to three hydroxy groups. The enzyme from several fungal sources also hydrolyses the p-nitrophenyl esters of hexadecanoic acid. It is however inactive towards several esters that are substrates for non-specific esterases.
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Purdy, R.E. and Kolattukudy, P.E. Hydrolysis of plant cuticle by plant pathogens. Properties of cutinase I, cutinase II, and a nonspecific esterase isolated from Fusarium solani pisi. Biochemistry14 (1975) 2832–2840. [PMID: 239740]