The optimum chain lengths for the acyl moiety is C6 for ester hydrolysis and C6 and C8 for triacylglycerol hydrolysis. a triacylglycerol + H2O = a diacylglycerol + a fatty acid + H(+) Optimum pH is 7.2. Optimum temperature is 37 degrees Celsius. Retains 90% of its activity after 30 minutes at 55 degrees Celsius. Monomer. Belongs to the AB hydrolase superfamily. Lipase family.