THE AMINO ACID SEQUENCE OF A TETRADECAPEPTIDE CONTAINING THE REACTIVE SERINE IN E. COLI ALKALINE PHOSPHATASE

Abstract
The amino acid sequence, near the reactive serine residue in alkaline phosphatase from Escherichia coli , is similar to sequences found at the active centers of several esterases. There might be 2 identical subunits. Low pH causes dissociation of the enzyme. Two phosphate ions are bound by this enzyme. If there are 2 active sites in alkaline phosphatase, they may be identical; or they may differ, one being more difficult to label than the other.