Subsite-Specific Structures and Reactions in Native and Synthetic (4Fe-4S) Cubane-Type Clusters (R. Holm, et al.). Indoleamine 2,3-Dioxygenase: Properties and Functions of a Superoxide Utilizing Enzyme (O. Hayaishi, et al.). Dinuclear Iron- and Manganese-Oxo Sites in Biology (L. Que & A. True). Metal Ion Promoted Reactions of Phosphate Derivatives (P. Hendry & A. Sargeson). Long-Range Electron Transfer in Donor (Spacer) Acceptor Molecules and Proteins (B. Bowler, et al.). Mercury(II)-Thiolate Chemistry and the Mechanism of the Heavy Metal Biosensor MerR (J. Wright, et al.). Probing Nucleic Acids with Transition Metal Complexes (A. Pyle & J. Barton). Biological Processing of DNA Modified by Plantinum Compunds (S. Bruhn, et al.). Subject Index. Cumulative Index, Volumes 1-38.