Selenocystathionine + Water → 2-Ketobutyric acid + Ammonia + Selenocysteine
Adenosine triphosphate + Hydrogen selenide + Water ↔ Adenosine monophosphate + Phosphoric acid + Phosphoroselenoic acid
Selenocysteine → Hydrogen selenide + L-Alanine
Methionine adenosyltransferase 2 subunit beta
S-adenosylmethionine synthase isoform type-1
3'-phosphoadenosine 5'-phosphosulfate synthase 1
Selenohomocysteine → Selenomethionine
Se-Methylselenocysteine → γ-Glutamyl-Se-methylselenocysteine
Adenosine triphosphate + Adenylylselenate → 3-Phosphoadenylylselenate + Adenosine diphosphate
Adenosine triphosphate + Selenic acid → Adenylylselenate + Pyrophosphate
Adenosine triphosphate + Selenomethionine + tRNA(Met) → Adenosine monophosphate + Pyrophosphate + Selenomethionyl-tRNA(Met)
Adenosine triphosphate + Selenomethionine + Water → Phosphoric acid + Pyrophosphate + Se-Adenosylselenomethionine
R + Se-Adenosylselenomethionine → CH3-R + Se-Adenosylselenohomocysteine
Se-Adenosylselenohomocysteine + Water → Adenosine + Selenohomocysteine
L-Serine + Selenohomocysteine → Selenocystathionine + Water