Methylation
CBS & SUOX

CBS
Cystathionine-β-Synthase

SUOX
Sulfite Oxidase

L-Carnitine
L-Arginine
Glutamine

https://mthfrsupport.com/2013/05/other-gene-mutations-that-must-be-addressed-before-starting-an-mthfr-protocol/

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L-carnitine contributes to the β-oxidation of fatty acids by transporting acyl coenzyme A (CoA) from cytosol to the mitochondrial matrix.

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https://en.m.wikipedia.org/wiki/Molybdopterin

https://en.m.wikipedia.org/wiki/Nitrogenase

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From the Eukaryotic Molybdenum Cofactor Biosynthesis to the Moonlighting Enzyme mARC

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6321594/

All eukaryotes, except for some unicellular eukaryotes, such as parasites and some yeasts, utilize Mo. In eukaryotes, Mo is present in the active center of five enzymes that are responsible for important steps in nitrogen, sulphur, and carbon metabolism, such as nitrate reductase (NR), sulphite oxidase (SO), aldehyde oxidase (AO), xanthine oxidoreductase/ dehydrogenase (XOR/XD), and mitochondrial amidoxime reducing component (mARC).