Daniel L. Purich is the editor of Advances in Enzymology and Related Areas of Molecular Biology, Part B: Mechanism of Enzyme Action, Volume 74, published by Wiley.

• Heterotrophic Assimilation of Carbon Dioxide (C. Werkman & H. Wood). Phosphotriesterase: An Enzyme in Search of a Substrate (F. Raushel & H. Holden). Phosphoribulokinase: Current Perspectives on the Structure/Function Basis for Regulation and Catalysis (H. Miziorko). The Molecular Evolution of Pyridoxal-5'-Phosphate-Dependent Enzymes (P. Mehta & P. Christen). O-Acetylserine Sulfhydrylase (C.-H. Tai & P. Cook). The Aromatic Amino Acid Hydroxylases (P. Fitzpatrick). L-Aspartase: New Tricks from an Old Enzyme (R. Viola). Indexes.