coenzyme
UK[ˌkəʊˈen.zaɪm]US[ˌkoʊˈen.zaɪm]
n
A non-protein organic compound that is necessary for the functioning of an enzyme.
n
A substance that enhances the action of an enzyme, often by acting as a carrier of electrons or specific functional groups.
Morpheme Breakdown
co
enzyme
co
together
enzyme
biological catalyst
Etymology
The word 'coenzyme' is a modern scientific compound formed in the early 20th century. It combines the Latin-derived prefix 'co-', meaning 'together with' or 'jointly', with the word 'enzyme', which itself originates from the Greek 'en' (in) and 'zyme' (leaven or ferment). The term was constructed to describe an organic molecule that works in partnership with an enzyme, a concept that logically extends from the prefix's sense of cooperation. Thus, the etymology transparently conveys the core function of a coenzyme: a substance that acts together with an enzyme to facilitate a biochemical reaction.
Analysis
Structure: co (together) + enzyme (biological catalyst)
- co: From Latin 'cum' (with, together). A prefix indicating joint action or association.
- enzyme: From modern Latin 'enzyma', from Greek 'en' (in) + 'zyme' (leaven). A noun referring to a protein that acts as a biological catalyst.
Examples
Vitamin B12 acts as a coenzyme in the metabolism of every cell in the human body.
The biochemist studied how the coenzyme NAD+ transfers energy within cells.
A deficiency in this essential coenzyme can lead to serious metabolic disorders.