毒理性
L-丝氨酸在细胞生长和发育(细胞增殖)中发挥作用。通过丝氨酸羟甲基转移酶将L-丝氨酸转化为甘氨酸,从而形成合成嘌呤碱基——腺嘌呤和鸟嘌呤所需的单碳单元。这些碱基与戊糖的磷酸酯键合是DNA和RNA的基本组成部分,也是能量产生代谢途径的最终产物,即ATP和GTP。此外,通过同一酶将L-丝氨酸转化为甘氨酸,还提供了合成嘧啶核苷酸——脱氧胸腺嘧啶单磷酸所需的单碳单元,它也是DNA的一个基本组成部分。
L-Serine plays a role in cell growth and development (cellular proliferation). The conversion of L-serine to glycine by serine hydroxymethyltransferase results in the formation of the one-carbon units necessary for the synthesis of the purine bases, adenine and guanine. These bases when linked to the phosphate ester of pentose sugars are essential components of DNA and RNA and the end products of energy producing metabolic pathways, ATP and GTP. In addition, L-serine conversion to glycine via this same enzyme provides the one-carbon units necessary for production of the pyrimidine nucleotide, deoxythymidine monophosphate, also an essential component of DNA.
来源:Toxin and Toxin Target Database (T3DB)