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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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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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 ● Nov. 10, 2023

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 ● Nov. 25, 2013

An active centre of origin appears to exist in South-eastern Europe, from which the species radiate out in all directions.

From The History of the European Fauna by Robert Francis Scharff

A great number of masons were trained in Italy, and came from Lombardy, which in the tenth century even was an active centre of civilisation.

From Illuminated Manuscripts by John William Bradley

During the Civil War, until its temporary occupation by Federal forces in 1863, and subsequent effective blockade, it was an active centre of operations of Confederate blockade runners.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

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