Allosteric enzymes are those that have more activation center and to which other substances known as allosteric regulators bind.
Allosteric regulators can be allosteric inhibitors or allosteric activators. The interaction among an allosteric enzyme and the allosteric inhibitor disallows the binding of the substrate to the enzyme. The interaction among the allosteric enzyme and the allosteric activator permits the binding of the substrate to the enzyme and sometimes enhances the affinity of the enzyme for the substrate. This regulatory phenomenon of the enzyme activity is known as allosterism.
Enzyme Activity: allosteric enzymes