proenzyme, zymogen
(noun) any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active
Source: WordNet® 3.1
proenzyme (plural proenzymes)
(biochemistry) Any inactive precursor of an enzyme that is converted to an enzyme by proteolysis; a zymogen
Source: Wiktionary
19 June 2025
(noun) the condition of belonging to a particular place or group by virtue of social or ethnic or cultural lineage; “his roots in Texas go back a long way”; “he went back to Sweden to search for his roots”; “his music has African roots”
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.
