What is it: A Process Control Plan (PCP) is a summary of defect prevention and reactive detection techniques. The overall intent of the PCP is to control the product characteristics and the associated process variables to ensure capability (around the identified target or nominal) and stability of the product over time.
Various compounds can reduce the activity of enzymes. They may act in a variety of different ways, and indeed may be reversible or irreversible inhibitors of the enzyme. An irreversible inhibitor causes covalent modification of the enzyme, so that its activity is permanently reduced.
Enzyme inhibitors are molecules that interact in some way with the enzyme to prevent it from working in the normal manner. Poisons and drugs are examples of enzyme inhibitors. Inhibitors change the shape of the enzyme and make it nonuasable to a substrate. Inhibitors can also act as a substrate and bind to the enzyme.