The plant meanwhile secretes esterase, peroxidase, phosphatase and protease enzymes. JH esterase cleaves the methyl ester giving JH acid. These drugs inhibit dopamine and acetylcholine esterase enzyme and have a gastrokinetic effect. This process involves hydrolysis of the 4-carbon ester group via plasma esterase enzyme. The pancreas also secretes phospholipase A2, lysophospholipase, and cholesterol esterase. The ester makes it susceptible to the enzyme acetylcholine esterase. During this process, the receptor destroying enzyme acetyl esterase domain stayed unchanged. The structure of acetylcholine esterase includes 14 highly conserved aromatic residues. They are hydrolyzed by pancreatic enzymes, cholesterol esterase, to produce cholesterol and free fatty acids. Granzymes are part of the serine esterase family. Many laboratories also perform a butyrate esterase test and a beta-lactamase test. Dipivefrine penetrates the cornea and is then hydrolysed to epinephrine by esterase enzymes. Types C and D are the only influenza viruses to express the enzyme esterase. The link with C1 esterase inhibitor deficiency was proved in 1963. The three domains are&colon; membrane fusion, esterase, and receptor binding domains.