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Natural selection: Peptide-based ligands for metal ions (see schematic representation) have a diverse range of applications that extends from stereoselective catalysis to the sensing of proteins. The possibility to screen large libraries of ligands for the selection of the best systems and their coexpression with proteins make peptide-based ligands powerful tools for bridging the gap between chemistry and biology.
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Licini et al. (2003) studied this question.
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