homocysteine(redirected from Homosistine)
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ho·mo·cys·te·ine(hō′mə-sĭs′tə-ēn′, -ĭn, -tē-)
An amino acid, C4H9NO2S, not found in proteins, that is used by the body in cellular metabolism. Elevated concentrations in the blood are associated with an increased risk of heart disease.
(Chemistry) an amino acid occurring as an intermediate in the metabolism of methionine. Elevated levels in the blood may indicate increased risk of cardiovascular disease