1
|
Daronnat L, Holfeltz V, Boubals N, Dumas T, Guilbaud P, Martinez DM, Moisy P, Sauge-Merle S, Lemaire D, Solari PL, Berthon L, Berthomieu C. Investigation of the Plutonium(IV) Interactions with Two Variants of the EF-Hand Ca-Binding Site I of Calmodulin. Inorg Chem 2023; 62:8334-8346. [PMID: 37184364 DOI: 10.1021/acs.inorgchem.3c00845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Due to its presence in the nuclear industry and its strong radiotoxicity, plutonium is an actinide of major interest in the event of internal contamination. To improve the understanding of its mechanisms of transport and accumulation in the body, the complexation of Pu(IV) to the most common protein calcium-binding motif found in cells, the EF-hand motif of calmodulin, was investigated. Visible and X-ray absorption spectroscopies (XAS) in solution made it possible to investigate the speciation of plutonium at physiological pH (pH 7.4) and pH 6 in two variants of the calmodulin Ca-binding site I and using Pu(IV) in different media: carbonate, chloride, or nitrate solutions. Three different species of Pu were identified in the samples, with formation of 1:1 Pu(IV):calmodulin peptide complexes, Pu(IV) reduction, and formation of peptide-mediated Pu(IV) hexanuclear cluster.
Collapse
Affiliation(s)
- Loïc Daronnat
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Vanessa Holfeltz
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Nathalie Boubals
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Philippe Guilbaud
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | | | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Sandrine Sauge-Merle
- Aix Marseille Université, CEA, CNRS, BIAM, UMR7265, IPM, Saint Paul-Lez-Durance 13108, France
| | - David Lemaire
- Aix Marseille Université, CEA, CNRS, BIAM, UMR7265, IPM, Saint Paul-Lez-Durance 13108, France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, L'Orme des Merisiers, Départementale 128, Saint Aubin 91190, France
| | - Laurence Berthon
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Catherine Berthomieu
- Aix Marseille Université, CEA, CNRS, BIAM, UMR7265, IPM, Saint Paul-Lez-Durance 13108, France
| |
Collapse
|
2
|
Kvashnina KO, Butorin SM, Wang S, Shi W. Foreword to the special virtual issue on Actinide physics and chemistry with synchrotron radiation. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:1131-1132. [PMID: 36073870 PMCID: PMC9455221 DOI: 10.1107/s1600577522007019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Foreword to the virtual special issue of Journal of Synchrotron Radiation on Actinide Physics and Chemistry with Synchrotron Radiation.
Collapse
Affiliation(s)
- Kristina O. Kvashnina
- The Rossendorf Beamline at ESRF, The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
- Institute of Resource Ecology, Helmholtz Zentrum Dresden-Rossendorf (HZDR), PO Box 510119, 01314 Dresden, Germany
| | - Sergei M. Butorin
- Condensed Matter Physics of Energy Materials, X-ray Photon Science, Department of Physics and Astronomy, Uppsala University, PO Box 516, SE-75120 Uppsala, Sweden
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, People’s Republic of China
| | - Weiqun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| |
Collapse
|