Napper, S.; Delbaere, L.T.J.; Waygood, E.B.
The aspartyl replacement of the active site histidine in histidine-containing protein, HPr, of the Escherichia coli phosphoenolpyruvate:sugar phosphotransferase system can accept and donate a phosphoryl group. Spontaneous dephosphorylation of acyl-phosphate autocatalyzes an internal cyclization (1999), J. Biol. Chem., 274, 21776-21782.