SEARCH Articles Figures Tables Binding groups Binding metallic Brief Overview of Ligand Groups that Bind to Metals in Biological Systems Carbonyl groups, metal binding Carboxylate groups metal binding Group 13 metals, transferrin binding Imidazole groups metal binding Peptide carbonyl groups, metal binding Sulfhydryl groups, metal binding Sulfhydryl groups, metal binding active site Transition metals, anion-binding group