Computational analysis of hydrolase mechanisms


We have studied an α-1,2-mannosidase, a cellulase, and a β-xylosidase by advanced modeling methods, using available tertiary structures as templates, with molecular mechanics, molecular dynamics, and quantum mechanics computat­ional methods. Studying complexes of carbohydrates in the active sites of these hydrolases yields various optimal and suboptimal protein-carbohydrate conformations, and this allows an advanced understanding of protein structure-function relationships and of pathways to and from the transition states of these complexes. We are now studying the mechanism of a thioesterase that catalyzes the hydrolysis of the thioester bond between fatty acids and Coenzyme A.

Peter Reilly’s other chemical engineering project