The small molecule causing the conformational change is an allosteric effector .

引起结构变化的小分子叫做变构效应场。

Allosteric site a part of an enzyme to which a specific effector or modulator can be attached .

别构部位：可以结合特定效应物或者调节物的酶的一个部分。

When the product accumulates beyond an optimal amount it binds to a site ( allosteric site ) on the enzyme , changing the shape so that it can no longer react with its substrate .

当产物积累超出最佳数量时，它将与酶的一个氨酰基位点（变构位点）结合改变其形状，使其不能长时间与底物发生作用。

Many oligomeric proteins are allosteric and known to be self-condensing and play an important role in metabolic control .

许多低聚物蛋白是变构的并且是能自我压缩的，在对于新陈代谢中起着重要的作用。