Sensitive polarographic waves which relate to thiouracil, 6-mercaptopurine(in ethylenediamino medium) and homocystine(in sodium citric acid buffer solution) appeared in the presence of Cu(Ⅱ). 高胱氨酸、6-巯基嘌呤和硫尿嘧啶均能与铜离子作用而在汞电极上产生两个吸附波。
Homocysteine/ˌhoʊmoʊˈsɪstiːn/ is a non-protein α-amino acid. It is a homologue of the amino acid cysteine, differing by an additional methylene bridge (-CH2-). It is biosynthesized from methionine by the removal of its terminal C methyl group. Homocysteine can be recycled into methionine or converted into cysteine with the aid of certain B-vitamins.