Human carboxylesterase I (hCES 1) plays an important role in the metabolism and activation of prodrugs, such
as, the hydrolysis of a variety of drugs of prodrugs featuring an ester, amide or carbamate function. The bindings of the
substrates of different lengths and cocaine to hCES1 at two different binding sites, catalytic site and Z-site, were studies
through MD simulations. For each case, the correlation analysis has been performed to explore the binding patterns of a
broad range of substrates binding to the hCES1.