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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

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

The most active centre of development then gradually shifted eastward again, while the older centres were perhaps submerged during the physical changes in the distribution of land and water.

From The History of the European Fauna by Robert Francis Scharff

We know that Lisbon had long been an active centre of trade with the Hanse Towns, Flanders, and England.

From Prince Henry the Navigator, the Hero of Portugal and of Modern Discovery, 1394-1460 A.D. With an Account of Geographical Progress Throughout the Middle Ages As the Preparation for His Work. by C. Raymond Beazley

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