Regulation of cellular levels of ADP-ribose is important in preventing nonenzymatic ADP-ribosylation of proteins. The Escherichia coli ADP-ribose pyrophosphatase, a Nudix enzyme, catalyzes the ...

Purine nucleotides, such as ATP and GTP, serve as energy carriers and regulators of cellular functions. ATP is the primary energy currency in cells. It consists of an adenine base, a ribose sugar, and ...