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Allosteric enzymes are mostly polymeric in nature i.e. they are made up of several subunits. These enzymes exhibit cooperativity i.e. binding of a ligand to the active site alters (increase or decrease) the binding affinity of the ligand on other sites. Some monomeric enzymes also exhibit cooperativity. Those monomeric enzymes which exhibit cooperativity are called mnemonical enzymes. Hexokinase D (an isoenzyme of hexokinase) is one such example.

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12y ago

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