Cu2+-dependent hydrolysis of O-hexyl 2,5-dichlorophenyl phosphoramidate by reptile sera
作者:Laura Ramírez-González、Elizabeth Undiano、Iván Flores-Pérez、Luis Carrillo-D'Lacoste、Mónica Salmerón、Alejandra Verastegui、Gabriela Lara、Antonio Monroy-Noyola
DOI:10.1016/j.cbi.2023.110637
日期:2023.9
Cu2+-dependent hydrolysis of O-hexyl 2,5-dichlorophenyl phosphoramidate (HDCP) compound in reptiles sera determined by spectrophotometry UV/Vis and chiral chromatography. Samples of ten reptile species were incubated with aliquot of 100 or 400 μM HDCP in presence of 100 or 300 μM Cu2+, or 2.5 mM Ca2+ or 5 mM EDTA at 37 °C for 30–60 min. The results shown an activator effect of Cu2+ on HDCP hydrolysis in freshwater
本研究表明,通过紫外/可见分光光度法和手性色谱法测定了爬行动物血清中 O-己基 2,5-二氯苯基氨基磷酸酯 (HDCP) 化合物的EDTA 抗性、Ca 2+和 Cu 2+依赖性水解。将十种爬行动物的样品与等份的 100 或 400 μM HDCP 在 100 或 300 μM Cu 2+或 2.5 mM Ca 2+或 5 mM EDTA存在下在 37 °C 下孵育 30–60 分钟。结果表明,Cu 2+对淡水龟血清(Trachemys scripta、Chelydra serpentina和Macrochelys temminckii)中的 HDCP 水解具有激活作用,因为 2,5-二氯苯酚(DCP;产物水解)的水平相似(∼37 μM DCP)鸡血清(阳性对照组)。与淡水龟类的 HDCPase 活性相比,海龟(Chelonia mydas和Eretmochelys imbricata)和鳄鱼(Crocodylus