Allosteric regulation is a metabolic control mechanism wherein enzymes possessing multiple subunits and distinct binding sites undergo conformational changes induced by non-substrate molecules known as modulators. This theory defines the enzyme's active site for substrate conversion and an allosteric site, located elsewhere on the protein structure, where positive (activators) or negative (inhibitors) modulators bind to respectively stimulate or inhibit catalytic activity. The core principle operates within cellular metabolism by utilizing feedback inhibition loops—where end-product synthesis inhibits initial pathway enzymes—to dynamically regulate metabolic flux in response to cellular energy requirements without altering gene expression levels.
Allosteric control is a mechanism of enzyme regulation in which binding of a substrate or regulatory molecule at a site distinct from the catalytic site alters enzyme conformation, thereby producing …