SUOX (Sulfite Oxidase): SUOX encodes an enzyme vital for the metabolism of sulfur-containing amino acids. It catalyzes the final step in breaking down cysteine and methionine by converting sulfite into sulfate, which is then eliminated through urine. Proper SUOX function prevents sulfite accumulation, which can lead to neurological damage and physical abnormalities known as sulfite oxidase deficiency, highlighting the enzyme’s essential role in amino acid metabolism and preventing neurotoxicity.