Development of Soft-Based Double-Stranded Peptide Chelators which Selectively Separate Europium and Lanthanum Ions Based on the Hardness Concept

Shigeki Kobayashi; Atuhiro Mizushima; Asako Sasuga; Makoto Watanabe

doi:10.1248/cpb.54.761

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Development of Soft-Based Double-Stranded Peptide Chelators which Selectively Separate Europium and Lanthanum Ions Based on the Hardness Concept

Shigeki Kobayashi, Atuhiro Mizushima, Asako Sasuga, Makoto Watanabe

Author information

Keywords: double-stranded peptide, soft-based chelator, hardness concept, lanthanide ion, binding constant

JOURNAL FREE ACCESS

2006 Volume 54 Issue 5 Pages 761-763

DOI https://doi.org/10.1248/cpb.54.761

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Abstract

New double-stranded peptide chelators (1) conjugated Cat (2,3-dihydroxybenzoic acid) were synthesized and formed a molecular complex 1-Eu³⁺ (or 1-Lu³⁺) with Eu³⁺ and Lu³⁺ but not La³⁺. The double-stranded peptide chelator may prove to be useful tools for studying the selective separation of lanthanide ions.

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