the localization of the previously postulated interface recognition site ( irs ) in porcine pancreatic phospholipase a2 , required for a specific interaction between the enzyme and organized lipid-water interfaces , was investigated by ultraviolet difference spectroscopy , by measurements of the intrinsic fluorescence of the unique trp residue , and by protection experiments against specific tryptic hydrolysis .
C1418617
pancreatic phospholipase a2
C0020291
hydrolysis