re·​duc·​tase | \ ri-ˈdək-ˌtās How to pronounce reductase (audio) , -ˌtāz \

Definition of reductase

: an enzyme that catalyzes reduction

Examples of reductase in a Sentence

Recent Examples on the Web One such enzyme, methylenetetrahydrofolate reductase, encoded by the MTHFR gene, is critical for converting one type of folate (also known as folic acid or vitamin B9) into another type of folate commonly found in blood. Miriam Fauzia, USA TODAY, "Fact check: MTHFR gene is not linked to physical indicators or vaccine response," 19 Apr. 2018 One such protein was methyl-coenzyme M reductase, which is involved in transforming carbon dioxide into methane. Quanta Magazine, "Below Our Feet, a World of Hidden Life," 16 June 2015 Methylenetetrahydrofolate reductase helps process amino acids, which are the building blocks of protein. Tara C. Smith, SELF, "Why You Don't Actually Need to Test for MTHFR Gene Variants," 18 Mar. 2019 More specifically, methylenetetrahydrofolate reductase converts the amino acid homocysteine to another, methionine. Tara C. Smith, SELF, "Why You Don't Actually Need to Test for MTHFR Gene Variants," 18 Mar. 2019 Research has found PSO can inhibit the enzyme known as 5-alpha reductase enzyme, which has been shown to slow and stop hair growth by producing DHT from testosterone. Alexandra Tunell, Harper's BAZAAR, "Why You Need Pumpkin Seed Oil In Your Skin Care This Fall," 15 Sep. 2014

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reductase.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of reductase

1902, in the meaning defined above

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Time Traveler for reductase

Time Traveler

The first known use of reductase was in 1902

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Cite this Entry

“Reductase.” Dictionary, Merriam-Webster, Accessed 17 May. 2021.

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More Definitions for reductase


re·​duc·​tase | \ -ˌtās, -ˌtāz How to pronounce reductase (audio) \

Medical Definition of reductase

: an enzyme that catalyzes chemical reduction

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