Selective binding of uranyl cation by a novel calmodulin peptide |
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Authors: | L Le Clainche C Vita |
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Institution: | (1) Commissariat à l’Energie Atomique, CEN Saclay, Direction des Sciences du Vivant, Département d’Ingénierie et d’Etude des Protéines, 91191 Gif sur Yvette, France |
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Abstract: | A 33-amino acid peptide corresponding to the helix-loop-helix motif of the calcium binding site I of the protein calmodulin
from Paramecium Tetraurelia has been synthesized its binding properties with heavy metal ions have been studied. Herein, we demonstrate that two mutations
of two aspartic acid residues in the peptide sequence gave access to a new peptide, which was selective for the uranyl ion
UO2
2+. This new peptide can be useful for the development of selective uranyl biosensors to monitor the presence of uranium in
contaminated environments. |
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Keywords: | Calmodulin Metal chelation Uranyl Biosensors Bioremediation Heavy metal U |
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