active centre

British  

noun

1. Also called: active site.  biochem the region in an enzyme molecule in which the reactive groups that participate in its action are juxtaposed

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Example Sentences

Olga Mayans and Jennifer Fleming created a three-dimensional model of its enzyme structure and active centre to understand the reaction pathway.

From Science Daily

"The work at Bombay absorbed the best years of my life and I need not explain how much I feel everything connected therewith. I wish the Institute prosperity as an active centre of work on behalf of the health organisation of the country, and I send blessings to the whole of its staff."

From BBC

In this regard, Destroyer makes an interesting companion piece to Steve McQueen and Gillian Flynn’s sharp, angry update of Lynda La Plante’s Widows – another bleak, hard-boiled genre piece to unusually place a fiftysomething woman at the active centre of its copious action.

From The Guardian

By 1700 Boston had already overtaken Oxford and Cambridge to become the second most active centre of publishing of English books after London.

From BBC

Under the Sassanian kings, Persia had become an active centre of intellectual life, reaching the climax of its Augustan age in the reign of Chosroes.

From Project Gutenberg