wat is inhibitors

Compounds or agents that combine with an enzyme so as  to prevent the normal substrate-enzyme combination and the catalytic reaction or substance that slows down or prevents a particular chemical reaction. Since blocking an enzyme's activity can kill a pathogen or correct a metabolic imbalance. Many drugs are enzyme inhibitors. Inhibitor binding is either reversible or irreversible. Irreversible inhibitors usually react with the enzyme and change it chemically (e.g. via covalent bond formation). These inhibitors modify key amino acid residues needed for enzymatic activity. But in reversible inhibitors bind non-covalently and different types of inhibition are produced depending on whether these inhibitors bind to the enzyme, the enzyme-substrate complex, or both.