Helmut Sigel

• Metal Ions in Biological Systems
• Cadmium
• Handbook on metals in clinical and analytical chemistry
• Interrelations among metal ions, enzymes, and gene expression
• Manganese and its role in biological processes
• Metal-carbon bonds in enzymes and cofactors
• Interactions of metal ions with nucleotides, nucleic acids, and their constituents
• Metallo-Drugs
• Aluminum and its role in biology
• Antibiotics and their complexes
• Biogeochemical cycles of elements
• Biogeochemistry, availability, and transport of metal in the environment