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  2. Betaine—homocysteine S-methyltransferase - Wikipedia

    en.wikipedia.org/wiki/Betaine—homocysteine_S...

    In the field of enzymology, a betaine-homocysteine S-methyltransferase also known as betaine-homocysteine methyltransferase (BHMT) is a zinc metallo-enzyme that catalyzes the transfer of a methyl group from trimethylglycine and a hydrogen ion from homocysteine to produce dimethylglycine and methionine respectively: [2]

  3. Homocysteine S-methyltransferase - Wikipedia

    en.wikipedia.org/wiki/Homocysteine_S...

    In enzymology, a homocysteine S-methyltransferase (EC 2.1.1.10) is an enzyme that catalyzes the chemical reaction. S-methylmethionine + L-homocysteine 2 L-methionine. Thus, the two substrates of this enzyme are S-methylmethionine and L-homocysteine, and it produces 2 molecules of L-methionine.

  4. Methionine synthase - Wikipedia

    en.wikipedia.org/wiki/Methionine_synthase

    In humans it is encoded by the MTR gene (5-methyltetrahydrofolate-homocysteine methyltransferase). [5] [6] Methionine synthase forms part of the S-adenosylmethionine (SAMe) biosynthesis and regeneration cycle, [7] and is the enzyme responsible for linking the cycle to one-carbon metabolism via the folate cycle.

  5. Betaine-homocysteine methyltransferase - Wikipedia

    en.wikipedia.org/?title=Betaine-homocysteine...

    Pages for logged out editors learn more. Contributions; Talk; Betaine-homocysteine methyltransferase

  6. Methylated-DNA—(protein)-cysteine S-methyltransferase

    en.wikipedia.org/wiki/Methylated-DNA—(protein...

    The S-methyl-L-cysteine residue irreversibly inactivates the protein, allowing only one transfer for each protein. This enzyme belongs to the family of transferases, specifically those transferring one-carbon group methyltransferases. The systematic name of this enzyme class is DNA-6-O-methylguanine:[protein]-L-cysteine S-methyltransferase.

  7. Thetin-homocysteine S-methyltransferase - Wikipedia

    en.wikipedia.org/wiki/Thetin-homocysteine_S...

    In enzymology, a thetin-homocysteine S-methyltransferase (EC 2.1.1.3) is an enzyme that catalyzes the chemical reaction dimethylsulfonioacetate + L-homocysteine ⇌ {\displaystyle \rightleftharpoons } S-methylthioglycolate + L-methionine

  8. DNA methyltransferase - Wikipedia

    en.wikipedia.org/wiki/DNA_methyltransferase

    DNMT1 is the most abundant DNA methyltransferase in mammalian cells, and considered to be the key maintenance methyltransferase in mammals. It predominantly methylates hemimethylated CpG di-nucleotides in the mammalian genome. The recognition motif for the human enzyme involves only three of the bases in the CpG dinucleotide pair: a C on one ...

  9. Methylenetetrahydrofolate reductase - Wikipedia

    en.wikipedia.org/wiki/Methylenetetrahydrofolate...

    4524 17769 Ensembl ENSG00000177000 ENSMUSG00000029009 UniProt P42898 Q9WU20 RefSeq (mRNA) NM_005957 NM_001330358 NM_001161798 NM_010840 RefSeq (protein) NP_001317287 NP_005948 NP_001155270 NP_034970 Location (UCSC) Chr 1: 11.79 – 11.81 Mb Chr 4: 148.12 – 148.14 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Methylenetetrahydrofolate reductase (MTHFR) is the rate-limiting enzyme ...