摘要: Publisher Summary The chapter discusses three major groups of hydrolases, namely, proteases, nucleases and carbohydrases. Deoxyribonucleases can be inhibited by chelating agents if metal-dependent, moving the pH or ionic strength outside working range, low concentrations denaturants, gentle heating. Ribonucleases are renowned for their robustness very difficult to inhibit. Two commercially available inhibitors, vanadyl ribonucleosides rat placental ribonuclease inhibitor, generally effective but because they do not covalently modify protein, little use in denaturing systems. If reactive group at active site is known, then it may modification with a group-specific reagent, example, iodoacetamide thiol nucleases. Metal-dependent enzymes agents. A number chemical inhibitors ribonucleases many these bind nucleic acids prevent enzyme from acting simply steric effects against other acid metabolizing enzymes; used must carefully titrated.