Catalyzes the hydrolysis of complex carboxylic polyesters found in the cell wall of plants (PubMed:17043825). Degrades cutin, a macromolecule that forms the structure of the plant cuticle (PubMed:17043825). Allows pathogenic fungi to penetrate through the cuticular barrier into the host plant during the initial stage of fungal infection (By similarity). cutin + H2O = cutin monomers. Inhibited by diisopropyl fluorophosphate (DFP). By contact with cutin. The 2 disulfide bonds play a critical role in holding the catalytic residues in juxta-position; reduction of the disulfide bridges results in the complete inactivation of the enzyme. The N-terminus is blocked. On the 2D-gel the determined MW is: 20.8 kDa. Belongs to the cutinase family.