Normalized intrinsic fluorescence emission spectra of thermally inactivated BfAChE in reverse micelles and in aqueous solution. BfAChE (2 μM), either entrapped in reverse micelles, w0 = 10 (A), or in aqueous solution (B), was inactivated at 51°C for 15 min. —, native BfAChE; –––, thermally inactivated BfAChE.