Acylation is rate-limiting in glycosylasparaginase-catalyzed hydrolysis of N4-(4?-substituted phenyl)-l-asparaginesElectronic supplementary information (ESI) available: Supplementary Figures 1?5. See http://www.rsc.org/suppdata/ob/b3/b301513k/In memoriam. Dedicated to the memory of Dr. Terry L. Kruger, Professor of Chemistry, Ball State University (Muncie, Indiana), whose amazing undergraduate organic chemistry lectures changed a career direction, and who was an important mentor in learning to do research (J. M. R.).