摘要:
(G:3-7)-dendri-PAMAM-(APO-Phe-Lys)(x) (2, APO = aminopropanol, Phe = phenylalanine, Lys = lysine) were prepared and used in a binding study with pyridoxal 5'-phosphate. The results revealed a positive dendritic effect, and binding ability was found to vary with the environment. (G:3-7)-dendri-PAMAM-(APO-Phe-Lys),, (2) demonstrated better binding ability at higher pH, and protonation of lysine was considered to affect binding. The strongest binding affinity was K-b = 254.3 mM(-1) at pH 9, which was shown by (G:7)-dendri-PAMAM-(APO-Phe-LYS)(490) (2e).