Collect. Czech. Chem. Commun. 1982, 47, 167-172

Eritadenines - Novel type of potent inhibitors of S-adenosyl-L-homocysteine hydrolase

Ivan Votruba and Antonín Holý

Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6


Rat liver SAH-hydrolase is strongly inhibited by four stereoisomeric 4-(adenin-9-yl)-2,3-dihydroxybutyric acids (eritadenines). D-Eritadenine, which is the most effective of the four, inactivates the catalytic activity of SAH-hydrolase at IC50 = 1.2 .10-8 mol l-1 in the hydrolytic reaction. The enzyme is irreversibly inhibited (τ/2 = 1.6 min). The inactivation activity decreases in the order D-erythro(2R, 3R) L-erythro(2S, 3S) threo(2S, 3R) threo(2R, 3S) configuration.