Recent Examples on the WebOne 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, 19 Apr. 2018 One such protein was methyl-coenzyme M reductase, which is involved in transforming carbon dioxide into methane.Quanta Magazine, 16 June 2015 Methylenetetrahydrofolate reductase helps process amino acids, which are the building blocks of protein. Tara C. Smith, SELF, 18 Mar. 2019 More specifically, methylenetetrahydrofolate reductase converts the amino acid homocysteine to another, methionine. Tara C. Smith, SELF, 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, 15 Sep. 2014