1
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Li B, Wang L, Kang Y, Cao H, Liu Y, He Q, Li Z, Tang X, Chen J, Wang L, Xu C. Amino Acid Decorated Phenanthroline Diimide as Sustainable Hydrophilic Am(III) Masking Agent with High Acid Resistance. JACS AU 2024; 4:3668-3678. [PMID: 39328760 PMCID: PMC11423330 DOI: 10.1021/jacsau.4c00659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Revised: 08/27/2024] [Accepted: 08/27/2024] [Indexed: 09/28/2024]
Abstract
Hydrophilic actinide masking agents are believed to be efficient alternatives to circumvent the extensive hazardous organic solvents/diluents typically employed in the liquid-liquid extraction for nuclear waste management. However, the practical application of hydrophilic ligands faces significant challenges in both synthetic/purification procedures and, more importantly, the acid resistance of the ligands themselves. Herein, we have demonstrated the combination of phenanthroline diimide framework with a biomotif of histidine flanking parts could achieve efficient separation of trivalent lanthanides/actinides (also actinides/actinides) under high acidity of over 1 M HNO3. This approach leverages the soft-hard coordination properties of N, O-hybrid ligands, as well as the energetically favored imides for metal coordination and the multiple protonation of histidine. These factors collectively contribute to the synthesis of an easily accessible, highly water-soluble, superior selective, and acid-resistant Am(III) masking agent. Thus, we have shown in this paper, by proper combination of synthetic N, O-hybrid ligand with amino acid, trivalent lanthanide and actinide separation could be efficiently fulfilled in a more sustainable manner.
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Affiliation(s)
- Bin Li
- Institute
of Nuclear and New Energy Technology, Tsinghua
University, Haidian District, Beijing, 100084, China
- Department
of Chemistry, Capital Normal University, Haidian District, Beijing, 100048 China
| | - Ludi Wang
- Department
of Chemistry, Capital Normal University, Haidian District, Beijing, 100048 China
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, Centre for Soft Matter
Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Haidian District, Beijing, 100871, China
| | - Yu Kang
- Department
of Chemistry, Capital Normal University, Haidian District, Beijing, 100048 China
| | - Hong Cao
- Institute
of Nuclear and New Energy Technology, Tsinghua
University, Haidian District, Beijing, 100084, China
| | - Yaoyang Liu
- Institute
of Nuclear and New Energy Technology, Tsinghua
University, Haidian District, Beijing, 100084, China
| | - Qiange He
- Institute
of Nuclear and New Energy Technology, Tsinghua
University, Haidian District, Beijing, 100084, China
| | - Zhongfeng Li
- Department
of Chemistry, Capital Normal University, Haidian District, Beijing, 100048 China
| | - Xiaoyan Tang
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Polymer
Chemistry and Physics of Ministry of Education, Centre for Soft Matter
Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Haidian District, Beijing, 100871, China
| | - Jing Chen
- Institute
of Nuclear and New Energy Technology, Tsinghua
University, Haidian District, Beijing, 100084, China
| | - Li Wang
- Department
of Chemistry, Capital Normal University, Haidian District, Beijing, 100048 China
| | - Chao Xu
- Institute
of Nuclear and New Energy Technology, Tsinghua
University, Haidian District, Beijing, 100084, China
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2
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Chae I, Shivkumar A, Doyle FM, Lee SW. Virus-Based Separation of Rare Earth Elements. NANO LETTERS 2024; 24:9946-9952. [PMID: 39101944 DOI: 10.1021/acs.nanolett.4c02510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
The utilization of biomaterials for the separation of rare earth elements (REEs) has attracted considerable interest due to their inherent advantages, including diverse molecular structures for selective binding and the use of eco-friendly materials for sustainable systems. We present a pioneering methodology for developing a safe virus to selectively bind REEs and facilitate their release through pH modulation. We engineered the major coat protein of M13 bacteriophage (phage) to incorporate a lanthanide-binding peptide. The engineered lanthanide-binding phage (LBPh), presenting ∼3300 copies of the peptide, serves as an effective biological template for REE separation. Our findings demonstrate the LBPh's preferential binding for heavy REEs over light REEs. Moreover, the LBPh exhibits remarkable robustness with excellent recyclability and stability across multiple cycles of separations. This study underscores the potential of genetically integrating virus templates with selective binding motifs for REE separation, offering a promising avenue for environmentally friendly and energy-efficient separation processes.
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Affiliation(s)
- Inseok Chae
- Department of Bioengineering, University of California, Berkeley, California 94720, United States
- Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Arjun Shivkumar
- Department of Bioengineering, University of California, Berkeley, California 94720, United States
| | - Fiona M Doyle
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
| | - Seung-Wuk Lee
- Department of Bioengineering, University of California, Berkeley, California 94720, United States
- Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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3
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Thompson PJ, Boggs DG, Wilson CA, Bruchs AT, Velidandla U, Bridwell-Rabb J, Olshansky L. Structure-driven development of a biomimetic rare earth artificial metalloprotein. Proc Natl Acad Sci U S A 2024; 121:e2405836121. [PMID: 39116128 PMCID: PMC11331073 DOI: 10.1073/pnas.2405836121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 07/05/2024] [Indexed: 08/10/2024] Open
Abstract
The 2011 discovery of the first rare earth-dependent enzyme in methylotrophic Methylobacterium extorquens AM1 prompted intensive research toward understanding the unique chemistry at play in these systems. This enzyme, an alcohol dehydrogenase (ADH), features a La3+ ion closely associated with redox-active coenzyme pyrroloquinoline quinone (PQQ) and is structurally homologous to the Ca2+-dependent ADH from the same organism. AM1 also produces a periplasmic PQQ-binding protein, PqqT, which we have now structurally characterized to 1.46-Å resolution by X-ray diffraction. This crystal structure reveals a Lys residue hydrogen-bonded to PQQ at the site analogously occupied by a Lewis acidic cation in ADH. Accordingly, we prepared K142A- and K142D-PqqT variants to assess the relevance of this site toward metal binding. Isothermal titration calorimetry experiments and titrations monitored by UV-Vis absorption and emission spectroscopies support that K142D-PqqT binds tightly (Kd = 0.6 ± 0.2 μM) to La3+ in the presence of bound PQQ and produces spectral signatures consistent with those of ADH enzymes. These spectral signatures are not observed for WT- or K142A-variants or upon addition of Ca2+ to PQQ ⸦ K142D-PqqT. Addition of benzyl alcohol to La3+-bound PQQ ⸦ K142D-PqqT (but not Ca2+-bound PQQ ⸦ K142D-PqqT, or La3+-bound PQQ ⸦ WT-PqqT) produces spectroscopic changes associated with PQQ reduction, and chemical trapping experiments reveal the production of benzaldehyde, supporting ADH activity. By creating a metal binding site that mimics native ADH enzymes, we present a rare earth-dependent artificial metalloenzyme primed for future mechanistic, biocatalytic, and biosensing applications.
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Affiliation(s)
- Peter J. Thompson
- Center for Biophysics and Quantitative Biology, University of Illinois, Urbana-Champaign, Urbana, IL61801
| | - David G. Boggs
- Department of Chemistry, University of Michigan, Ann Arbor, MI48109
| | - Charles A. Wilson
- Department of Chemistry, Materials Research Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL61801
| | - Austin T. Bruchs
- Department of Chemistry, University of Michigan, Ann Arbor, MI48109
| | - Uditha Velidandla
- Department of Chemistry, Materials Research Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL61801
| | | | - Lisa Olshansky
- Center for Biophysics and Quantitative Biology, University of Illinois, Urbana-Champaign, Urbana, IL61801
- Department of Chemistry, Materials Research Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL61801
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Shen L, Yu X, Zhou H, Wang J, Zhao H, Qiu G, Chen Z. Optimization and mechanism studies for the biosorption of rare earth ions by Yarrowia lipolytica. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:52118-52131. [PMID: 39136922 DOI: 10.1007/s11356-024-34660-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 08/04/2024] [Indexed: 09/06/2024]
Abstract
Research on the recovery of rare earth elements from wastewater has attracted increasing attention. Compared with other methods, biosorption is a simple, efficient, and environmentally friendly method for rare earth wastewater treatment, which has greater prospects for development. The objective of this study was to investigate the biosorption behavior and mechanism of Yarrowia lipolytica for five rare earth ions (La3⁺, Nd3⁺, Er3⁺, Y3⁺, and Sm3⁺) with a particular focus on biosorption behavior, biosorption kinetics, and biosorption isotherm. It was demonstrated that the biosorption capacity of Y. lipolytica at optimal conditions was 76.80 mg/g. It was discovered that the biosorption process complied with the pseudo-second-order kinetic model and the Langmuir biosorption isotherm, indicating that Y. lipolytica employed a monolayer chemical biosorption process to biosorb rare earth ions. Characterization analysis demonstrated that the primary functional groups involved in rare earth ion biosorption were amino, carboxyl, and hydroxyl groups. The cooperative biosorption of rare earth ions by Y. lipolytica was facilitated by means of surface complexation, ion exchange, and electrostatic interactions. These findings suggest that Y. lipolytica has the potential to be an effective biosorbent for the removal of rare earth elements from wastewater.
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Affiliation(s)
- Li Shen
- School of Minerals Processing & Bioengineering, Central South University, Changsha, 410083, Hunan, China
- Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, 410083, Hunan, China
| | - Xinyi Yu
- School of Minerals Processing & Bioengineering, Central South University, Changsha, 410083, Hunan, China
- Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, 410083, Hunan, China
| | - Hao Zhou
- School of Minerals Processing & Bioengineering, Central South University, Changsha, 410083, Hunan, China
- Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, 410083, Hunan, China
| | - Junjun Wang
- School of Minerals Processing & Bioengineering, Central South University, Changsha, 410083, Hunan, China
- Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, 410083, Hunan, China
| | - Hongbo Zhao
- School of Minerals Processing & Bioengineering, Central South University, Changsha, 410083, Hunan, China
- Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, 410083, Hunan, China
| | - Guanzhou Qiu
- School of Minerals Processing & Bioengineering, Central South University, Changsha, 410083, Hunan, China
- Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, 410083, Hunan, China
| | - Zhu Chen
- School of Minerals Processing & Bioengineering, Central South University, Changsha, 410083, Hunan, China.
- Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, 410083, Hunan, China.
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Cao H, Kang Y, Li B, Liu Y, Bao M, Li H, Zheng Y, Wang L, Weng C, Tang X, Wang L, Xu C. Amine-Terminated Phenanthroline Diimides as Aqueous Masking Agents for Am(III)/Eu(III) Separation: An Alternative Ligand Design Strategy for Water-Soluble Lanthanide/Actinide Chelating Ligands. Inorg Chem 2024; 63:10511-10518. [PMID: 38768636 DOI: 10.1021/acs.inorgchem.4c00710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Selective actinide coordination (from lanthanides) is critical for both nuclear waste management and sustainable development of nuclear power. Hydrophilic ligands used as masking agents to withhold actinides in the aqueous phase are currently highly pursued, while synthetic accessibility, water solubility, acid resistance, and extraction capability are the remaining problems. Most reported hydrophilic ligands are only effective at low acidity. We recently proved that the phenanthroline diimide skeleton was an efficient building block for the construction of highly efficient acid-resistant hydrophilic lanthanide/actinide separation agents, while the limited water solubility hindered the loading capability of the ligand. Herein, amine was introduced as the terminal solubilizing group onto the phenanthroline diimide backbone, which after protonation in acid showed high water solubility. The positively charged terminal amines enhanced the ligand water solubility to a large extent, which, on the other side, was believed to be detrimental for the coordination and complexation of the metal cations. We showed that by delicately adjusting the alkyl chain spacing, this intuitive disadvantage could be relieved and superior extraction performances could be achieved. This work holds significance for both hydrophilic lanthanide/actinide separation ligand design and, concurrently, offers insights into the development of water-soluble lanthanide/actinide complexes for biomedical and bioimaging applications.
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Affiliation(s)
- Hong Cao
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China
| | - Yu Kang
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Centre for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Haidian District, Beijing 100871, China
| | - Bin Li
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China
| | - Yaoyang Liu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China
| | - Mingjie Bao
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China
| | - Haoyu Li
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China
| | - Yuan Zheng
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China
| | - Ludi Wang
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China
| | - Chaoqun Weng
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Centre for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Haidian District, Beijing 100871, China
| | - Xiaoyan Tang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Centre for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Haidian District, Beijing 100871, China
| | - Li Wang
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China
| | - Chao Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China
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6
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Hussain Z, Dwivedi D, Kwon I. Recovery of rare earth elements from low-grade coal fly ash using a recyclable protein biosorbent. Front Bioeng Biotechnol 2024; 12:1385845. [PMID: 38817924 PMCID: PMC11137179 DOI: 10.3389/fbioe.2024.1385845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 04/24/2024] [Indexed: 06/01/2024] Open
Abstract
Rare earth elements (REEs), including those in the lanthanide series, are crucial components essential for clean energy transitions, but they originate from geographically limited regions. Exploiting new and diverse supply sources is vital to facilitating a clean energy future. Hence, we explored the recovery of REEs from coal fly ash (FA), a complex, low-grade industrial feedstock that is currently underutilized (leachate concentrations of REEs in FA are < 0.003 mol%). Herein, we demonstrated the thermo-responsive genetically encoded REE-selective elastin-like polypeptides (RELPs) as a recyclable bioengineered protein adsorbent for the selective retrieval of REEs from coal fly ash over multiple cycles. The results showed that RELPs could be efficiently separated using temperature cycling and reused with high stability, as they retained ∼95% of their initial REE binding capacity even after four cycles. Moreover, RELPs selectively recovered high-purity REEs from the simulated solution containing one representative REE in the range of 0.0001-0.005 mol%, resulting in up to a 100,000-fold increase in REE purity. This study offers a sustainable approach to diversifying REE supplies by recovering REEs from low-grade coal fly ash in industrial wastes and provides a scientific basis for the extraction of high-purity REEs for industrial purposes.
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Affiliation(s)
| | | | - Inchan Kwon
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
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7
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Ye Q, Wang D, Wei N. Engineering biomaterials for the recovery of rare earth elements. Trends Biotechnol 2024; 42:575-590. [PMID: 37985335 DOI: 10.1016/j.tibtech.2023.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 11/22/2023]
Abstract
The escalating global demand for rare earth elements (REEs) and the overabundance of REE-containing waste require innovative technologies for REE recovery from waste to achieve a sustainable supply of REEs while reducing the environmental burden. Biosorption mediated by peptides or proteins has emerged as a promising approach for selective REE recovery. To date, multiple peptides and proteins with high REE-binding affinity and selectivity have been discovered, and various strategies are being exploited to engineer robust and reusable biosorptive materials for selective REE recovery. This review highlights recent advances in discovering and engineering peptides and proteins for REE recovery. Future research prospects and challenges are also discussed.
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Affiliation(s)
- Quanhui Ye
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Dong Wang
- School of Information Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Na Wei
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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8
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Marlina D, Müllers Y, Glebe U, Kumke MU. Spectroscopic characterization of europium binding to a calmodulin-EF4 hand peptide-polymer conjugate. RSC Adv 2024; 14:14091-14099. [PMID: 38686292 PMCID: PMC11056824 DOI: 10.1039/d4ra01505c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 04/24/2024] [Indexed: 05/02/2024] Open
Abstract
The emergence of biological ligand as an alternative to chemical ligands enables a sustainable lanthanide extraction route. In this study, a peptide originating from the loop of domain 4 calmodulin (EF4) was synthesized and the interaction with europium ions was monitored using time resolved laser fluorescence spectroscopy (TRLFS). Despite being retracted from its full protein structure, the twelve amino acids of calmodulin-EF4 showed binding to europium. Europium-peptide complex formation was evident by an increase in decay time from 110 to 187 μs. The spectra of europium bound to peptide can be easily distinguished from the free europium ion as the 5D0 → 7F2 peak intensifies. When europium bound to the peptide-polymer conjugate, the decay time was further increased to 259 μs. This suggests that lanthanide binding can be enhanced by immobilizing the short peptide into a polymer matrix. The europium-peptide/conjugate bond was reversible, triggered by pH, promoting peptide reusability. Due to the fact that the study was conducted exclusively in water, it suggests minimal use of chemicals is possible while maintaining peptide affinity. This makes the calmodulin-EF4 peptide an ideal candidate as biological ligand. This study lays the groundwork for developing a peptide-based filter material for lanthanide separation.
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Affiliation(s)
- Dini Marlina
- University of Potsdam, Institute of Chemistry, Optical Sensing and Spectroscopy Karl-Liebknecht-Str. 24-25 14476 Potsdam-Golm Germany
| | - Yannic Müllers
- University of Potsdam, Institute of Chemistry, Polymer Materials and Polymer Technologies Karl-Liebknecht-Str. 24-25 14476 Potsdam-Golm Germany
- Fraunhofer Institute for Applied Polymer Research IAP Geiselbergstr. 69 14476 Potsdam-Golm Germany
| | - Ulrich Glebe
- University of Potsdam, Institute of Chemistry, Polymer Materials and Polymer Technologies Karl-Liebknecht-Str. 24-25 14476 Potsdam-Golm Germany
- Fraunhofer Institute for Applied Polymer Research IAP Geiselbergstr. 69 14476 Potsdam-Golm Germany
| | - Michael U Kumke
- University of Potsdam, Institute of Chemistry, Optical Sensing and Spectroscopy Karl-Liebknecht-Str. 24-25 14476 Potsdam-Golm Germany
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9
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Dykeman-Bermingham PA, Bogen MP, Chittari SS, Grizzard SF, Knight AS. Tailoring Hierarchical Structure and Rare Earth Affinity of Compositionally Identical Polymers via Sequence Control. J Am Chem Soc 2024; 146:8607-8617. [PMID: 38470430 DOI: 10.1021/jacs.4c00440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Macromolecule sequence, structure, and function are inherently intertwined. While well-established relationships exist in proteins, they are more challenging to define for synthetic polymer nanoparticles due to their molecular weight, sequence, and conformational dispersities. To explore the impact of sequence on nanoparticle structure, we synthesized a set of 16 compositionally identical, sequence-controlled polymers with distinct monomer patterning of dimethyl acrylamide and a bioinspired, structure-driving di(phenylalanine) acrylamide (FF). Sequence control was achieved through multiblock polymerizations, yielding unique ensembles of polymer sequences which were simulated by kinetic Monte Carlo simulations. Systematic analysis of the global (tertiary- and quaternary-like) structure in this amphiphilic copolymer series revealed the effect of multiple sequence descriptors: the number of domains, the hydropathy of terminal domains, and the patchiness (density) of FF within a domain, each of which impacted both chain collapse and the distribution of single- and multichain assemblies. Furthermore, both the conformational freedom of chain segments and local-scale, β-sheet-like interactions were sensitive to the patchiness of FF. To connect sequence, structure, and target function, we evaluated an additional series of nine sequence-controlled copolymers as sequestrants for rare earth elements (REEs) by incorporating a functional acrylic acid monomer into select polymer scaffolds. We identified key sequence variables that influence the binding affinity, capacity, and selectivity of the polymers for REEs. Collectively, these results highlight the potential of and boundaries of sequence control via multiblock polymerizations to drive primary sequence ensembles hierarchical structures, and ultimately the functionality of compositionally identical polymeric materials.
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Affiliation(s)
- Peter A Dykeman-Bermingham
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Matthew P Bogen
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Supraja S Chittari
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Savannah F Grizzard
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Abigail S Knight
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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10
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Kastenhofer J, Spadiut O, Papangelakis VG, Allen DG. Roles of pH and phosphate in rare earth element biosorption with living acidophilic microalgae. Appl Microbiol Biotechnol 2024; 108:262. [PMID: 38483568 PMCID: PMC10940408 DOI: 10.1007/s00253-024-13068-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 02/01/2024] [Accepted: 02/11/2024] [Indexed: 03/17/2024]
Abstract
The increasing demand for rare earth elements (REEs) has spurred interest in the development of recovery methods from aqueous waste streams. Acidophilic microalgae have gained attention for REE biosorption as they can withstand high concentrations of transition metals and do not require added organic carbon to grow, potentially allowing simultaneous sorption and self-replication of the sorbent. Here, we assessed the potential of Galdieria sulphuraria for REE biosorption under acidic, nutrient-replete conditions from solutions containing ≤ 15 ppm REEs. Sorption at pH 1.5-2.5 (the growth optimum of G. sulphuraria) was poor but improved up to 24-fold at pH 5.0 in phosphate-free conditions. Metabolic activity had a negative impact on REE sorption, additionally challenging the feasibility of REE biosorption under ideal growth conditions for acidophiles. We further examined the possibility of REE biosorption in the presence of phosphate for biomass growth at elevated pH (pH ≥ 2.5) by assessing aqueous La concentrations in various culture media. Three days after adding La into the media, dissolved La concentrations were up to three orders of magnitude higher than solubility predictions due to supersaturation, though LaPO4 precipitation occurred under all conditions when seed was added. We concluded that biosorption should occur separately from biomass growth to avoid REE phosphate precipitation. Furthermore, we demonstrated the importance of proper control experiments in biosorption studies to assess potential interactions between REEs and matrix ions such as phosphates. KEY POINTS: • REE biosorption with G. sulphuraria increases significantly when raising pH to 5 • Phosphate for biosorbent growth has to be supplied separately from biosorption • Biosorption studies have to assess potential matrix effects on REE behavior.
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Affiliation(s)
- Jens Kastenhofer
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada
| | - Oliver Spadiut
- Institute of Chemical, Environmental and Bioscience Engineering, Research Division Biochemical Engineering, Research Group Integrated Bioprocess Development, TU Vienna, Gumpendorfer Straße 1a, 1060, Vienna, Austria
| | - Vladimiros G Papangelakis
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada
| | - D Grant Allen
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada.
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11
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Behrsing T, Blair VL, Jaroschik F, Deacon GB, Junk PC. Rare Earths-The Answer to Everything. Molecules 2024; 29:688. [PMID: 38338432 PMCID: PMC10856286 DOI: 10.3390/molecules29030688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 01/24/2024] [Accepted: 01/27/2024] [Indexed: 02/12/2024] Open
Abstract
Rare earths, scandium, yttrium, and the fifteen lanthanoids from lanthanum to lutetium, are classified as critical metals because of their ubiquity in daily life. They are present in magnets in cars, especially electric cars; green electricity generating systems and computers; in steel manufacturing; in glass and light emission materials especially for safety lighting and lasers; in exhaust emission catalysts and supports; catalysts in artificial rubber production; in agriculture and animal husbandry; in health and especially cancer diagnosis and treatment; and in a variety of materials and electronic products essential to modern living. They have the potential to replace toxic chromates for corrosion inhibition, in magnetic refrigeration, a variety of new materials, and their role in agriculture may expand. This review examines their role in sustainability, the environment, recycling, corrosion inhibition, crop production, animal feedstocks, catalysis, health, and materials, as well as considering future uses.
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Affiliation(s)
- Thomas Behrsing
- School of Chemistry, Monash University, Melbourne, VIC 3800, Australia; (T.B.); (V.L.B.); (G.B.D.)
| | - Victoria L. Blair
- School of Chemistry, Monash University, Melbourne, VIC 3800, Australia; (T.B.); (V.L.B.); (G.B.D.)
| | | | - Glen B. Deacon
- School of Chemistry, Monash University, Melbourne, VIC 3800, Australia; (T.B.); (V.L.B.); (G.B.D.)
| | - Peter C. Junk
- College of Science & Engineering, James Cook University, Townsville, QLD 4811, Australia
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12
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Liu Y, Kang Y, Bao M, Cao H, Weng C, Dong X, Hao H, Tang X, Chen J, Wang L, Xu C. Hydroxyl-group functionalized phenanthroline diimides as efficient masking agents for Am(III)/Eu(III) separation under harsh conditions. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132756. [PMID: 37866146 DOI: 10.1016/j.jhazmat.2023.132756] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 10/04/2023] [Accepted: 10/09/2023] [Indexed: 10/24/2023]
Abstract
The separation of Lns(III) from radioactive Ans(III) in high-level liquid waste remains a formidable hydrometallurgical challenge. Water-soluble ligands are believed to be new frontiers in the search of efficient Lns/Ans separation ligands to close the nuclear fuel cycles and dealing with current existing nuclear waste. Currently, the development of hydrophilic ligands far lags behind their lipophilic counterparts due to their complicated synthetic procedures, inferior extraction performances, and acid tolerances. In this paper, we have showed a series of hydroxyl-group functionalized phenanthroline diimides were efficient masking agents for Am(III)/Eu(III) separation under high acidity (˃ 1 M HNO3). Record high SFEu(III)/Am(III) of 162 and 264 were observed for Phen-2DIC2OH and Phen-2DIC4OH in 1.25 M HNO3 which represents the best Eu(III)/Am(III) separation performance at this acidity. UV-vis absorption, NMR and TRLFS titrations were conducted to elucidate the predominant of 1:1 ligand/metal species under extraction conditions. X-ray data of both the ligand and Eu(III) complex together with DFT calculations revealed the superior extraction performances and selectivities. The current reported hydrophilic ligands were easy to prepare and readily to scale-up, acid tolerant and highly efficient, together with their CHON-compatible nature make them promising candidates in the development of advanced separation processes.
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Affiliation(s)
- Yaoyang Liu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China
| | - Yu Kang
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China
| | - Mingjie Bao
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China
| | - Hong Cao
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China
| | - Chaoqun Weng
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 China
| | - Xue Dong
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China
| | - Huaixin Hao
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China
| | - Xiaoyan Tang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 China
| | - Jing Chen
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China.
| | - Li Wang
- Department of Chemistry, Capital Normal University, Haidian District, Beijing 100048, China.
| | - Chao Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing 100084, China.
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13
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Cao M, Peng Q, Wang Y, Luo G, Feng L, Zhao S, Yuan Y, Wang N. High-efficiency uranium extraction from seawater by low-cost natural protein hydrogel. Int J Biol Macromol 2023; 242:124792. [PMID: 37169051 DOI: 10.1016/j.ijbiomac.2023.124792] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/26/2023] [Accepted: 05/05/2023] [Indexed: 05/13/2023]
Abstract
Utilization of uranium resource in seawater are highly possible to meet the growth demands for the sustainable development of nuclear energy industry. Bio-adsorbents exhibit high performance in terms of adsorption selectivity, equilibrium speed, and environmental friendliness, while the high fabrication cost hinders their practical application. In this study, a low-cost soy protein isolate (SPI) is used to fabricate adsorbent named SPI hydrogel for uranium extraction. This is the first report on applying bio-adsorbents derived from low-cost natural proteins for uranium extraction. The SPI hydrogel showed high uranium adsorption capacity of 53.94 mg g-1 in simulated nuclear wastewater and 5.29 mg g-1 is achieved in natural seawater, which is higher than all currently available adsorbents based on non-modified natural biomolecules. The amino and oxygen-containing groups are identified as the functional groups for uranyl binding by providing four oxygen and two nitrogen atoms to form equatorial coordination with uranyl, which guarantees the high binding selectivity and affinity to uranyl ions. The low cost for accessing the raw material together with the environmental friendliness, high salt tolerance, high uranium adsorption ability, and high selectivity to uranium, make SPI hydrogel a promising adsorbent for uranium extraction from seawater and nuclear wastewater.
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Affiliation(s)
- Meng Cao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Qin Peng
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Hainan Normal University, Haikou 571158, China.
| | - Yue Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Guangsheng Luo
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Lijuan Feng
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Shilei Zhao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Yihui Yuan
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China.
| | - Ning Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China.
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14
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Hasani Zadeh P, Fermoso FG, Collins G, Serrano A, Mills S, Abram F. Impacts of metal stress on extracellular microbial products, and potential for selective metal recovery. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 252:114604. [PMID: 36758509 DOI: 10.1016/j.ecoenv.2023.114604] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Harnessing microbial capabilities for metal recovery from secondary waste sources is an eco-friendly and sustainable approach for the management of metal-containing wastes. Soluble microbial products (SMP) and extracellular polymeric substances (EPS) are the two main groups of extracellular compounds produced by microorganisms in response to metal stress that are of great importance for remediation and recovery of metals. These include various high-, and low, molecular weight components, which serve various functional and structural roles. These compounds often contain functional groups with metal binding potential that can attenuate metal stress by sequestering metal ions, making them less bioavailable. Microorganisms can regulate the content and composition of EPS and SMP in response to metal stress in order to increase the compounds specificity and capacity for metal binding. Thus, EPS and SMP represent ideal candidates for developing technologies for selective metal recovery from complex wastes. To discover highly metal-sorptive compounds with specific metal binding affinity for metal recovery applications, it is necessary to investigate the metal binding affinity of these compounds, especially under metal stressed conditions. In this review we critically reviewed microbial EPS and SMP production as a response to metal stress with a particular emphasis on the metal binding properties of these compounds and their role in altering metal bioavailability. Furthermore, for the first time, we compiled the available data on potential application of these compounds for selective metal recovery from waste streams.
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Affiliation(s)
- Parvin Hasani Zadeh
- Bioprocesses for the Circular Economy Group, Instituto de la Grasa, Spanish National Research Council (CSIC), Seville, Spain; Microbiology, School of Biological and Chemical Sciences, National University of Ireland Galway, Galway, Ireland.
| | - Fernando G Fermoso
- Bioprocesses for the Circular Economy Group, Instituto de la Grasa, Spanish National Research Council (CSIC), Seville, Spain
| | - Gavin Collins
- Microbiology, School of Biological and Chemical Sciences, National University of Ireland Galway, Galway, Ireland
| | - Antonio Serrano
- Institute of Water Research, University of Granada, Granada 18071, Spain; Department of Microbiology, Pharmacy Faculty, University of Granada, Campus de Cartuja s/n, Granada 18071, Spain
| | - Simon Mills
- Microbiology, School of Biological and Chemical Sciences, National University of Ireland Galway, Galway, Ireland
| | - Florence Abram
- Microbiology, School of Biological and Chemical Sciences, National University of Ireland Galway, Galway, Ireland
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15
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Lee HD, Grady CJ, Krell K, Strebeck C, Good NM, Martinez-Gomez NC, Gilad AA. A Novel Protein for the Bioremediation of Gadolinium Waste. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.05.522788. [PMID: 36711778 PMCID: PMC9881998 DOI: 10.1101/2023.01.05.522788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Several hundreds of tons of gadolinium-based contrast agents (GBCAs) are being dumped into the environment every year. Although macrocyclic GBCAs exhibit superior stability compared to their linear counterparts, we have found that the structural integrity of chelates are susceptible to ultraviolet light, regardless of configuration. In this study, we present a synthetic protein termed GLamouR that binds and reports gadolinium in an intensiometric manner. We then explore the extraction of gadolinium from GBCA-spiked artificial urine samples and investigate if the low picomolar concentrations reported in gadolinium-contaminated water sources pose a barrier for bioremediation. Based on promising results, we anticipate GLamouR can be used for detecting and mining REEs beyond gadolinium as well and hope to expand the biological toolbox for such applications.
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Affiliation(s)
- Harvey D. Lee
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI, United States
| | - Connor J. Grady
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI, United States
| | - Katie Krell
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, United States
| | - Cooper Strebeck
- Department of Mechanical Engineering, Michigan State University, East Lansing, MI, United States
| | - Nathan M. Good
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, United States
| | - N. Cecilia Martinez-Gomez
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, United States
| | - Assaf A. Gilad
- Department of Radiology, Michigan State University, East Lansing, MI, United States
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI, United States
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16
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Song L, Wang X, Li L, Wang Z, He L, Li Q, Pan Q, Ding S. A Novel Type of Tetradentate Dipyridyl-Derived Bis(pyrazole) Ligands for Highly Efficient and Selective Extraction of Am 3+ Over Eu 3+ From HNO 3 Solution. SOLVENT EXTRACTION AND ION EXCHANGE 2023. [DOI: 10.1080/07366299.2023.2173014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- Lianjun Song
- College of Chemistry, Sichuan University, Chengdu, PR China
| | - Xueyu Wang
- College of Chemistry, Sichuan University, Chengdu, PR China
| | - Long Li
- College of Chemistry, Sichuan University, Chengdu, PR China
| | - Zhuang Wang
- College of Chemistry, Sichuan University, Chengdu, PR China
| | - Lanlan He
- College of Chemistry, Sichuan University, Chengdu, PR China
| | - Qiuju Li
- College of Chemistry, Sichuan University, Chengdu, PR China
| | - Qingjiang Pan
- School of Chemistry and Materials Science, Heilongjiang University, Harbin, PR China
| | - Songdong Ding
- College of Chemistry, Sichuan University, Chengdu, PR China
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17
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Abstract
Living systems are built from a small subset of the atomic elements, including the bulk macronutrients (C,H,N,O,P,S) and ions (Mg,K,Na,Ca) together with a small but variable set of trace elements (micronutrients). Here, we provide a global survey of how chemical elements contribute to life. We define five classes of elements: those that are (i) essential for all life, (ii) essential for many organisms in all three domains of life, (iii) essential or beneficial for many organisms in at least one domain, (iv) beneficial to at least some species, and (v) of no known beneficial use. The ability of cells to sustain life when individual elements are absent or limiting relies on complex physiological and evolutionary mechanisms (elemental economy). This survey of elemental use across the tree of life is encapsulated in a web-based, interactive periodic table that summarizes the roles chemical elements in biology and highlights corresponding mechanisms of elemental economy.
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Affiliation(s)
- Kaleigh A Remick
- Department of Microbiology, Cornell University, New York, NY, United States
| | - John D Helmann
- Department of Microbiology, Cornell University, New York, NY, United States.
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18
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Hemmann JL, Keller P, Hemmerle L, Vonderach T, Ochsner AM, Bortfeld-Miller M, Günther D, Vorholt JA. Lanpepsy is a novel lanthanide-binding protein involved in the lanthanide response of the obligate methylotroph Methylobacillus flagellatus. J Biol Chem 2023; 299:102940. [PMID: 36702252 PMCID: PMC9988556 DOI: 10.1016/j.jbc.2023.102940] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 01/24/2023] Open
Abstract
Lanthanides were recently discovered as metals required in the active site of certain methanol dehydrogenases. Since then, the characterization of the lanthanome, that is, proteins involved in sensing, uptake, and utilization of lanthanides, has become an active field of research. Initial exploration of the response to lanthanides in methylotrophs has revealed that the lanthanome is not conserved and that multiple mechanisms for lanthanide utilization must exist. Here, we investigated the lanthanome in the obligate model methylotroph Methylobacillus flagellatus. We used a proteomic approach to analyze differentially regulated proteins in the presence of lanthanum. While multiple known proteins showed induction upon growth in the presence of lanthanum (Xox proteins, TonB-dependent receptor), we also identified several novel proteins not previously associated with lanthanide utilization. Among these was Mfla_0908, a periplasmic 19 kDa protein without functional annotation. The protein comprises two characteristic PepSY domains, which is why we termed the protein lanpepsy (LanP). Based on bioinformatic analysis, we speculated that LanP could be involved in lanthanide binding. Using dye competition assays, quantification of protein-bound lanthanides by inductively coupled plasma mass spectrometry, as well as isothermal titration calorimetry, we demonstrated the presence of multiple lanthanide binding sites that showed selectivity over the chemically similar calcium ion. LanP thus represents the first member of the PepSY family that binds lanthanides. Although the physiological role of LanP is still unclear, its identification is of interest for applications toward the sustainable purification and separation of rare-earth elements.
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Affiliation(s)
- Jethro L Hemmann
- Institute of Microbiology, Department of Biology, ETH Zurich, Zurich, Switzerland.
| | - Philipp Keller
- Institute of Microbiology, Department of Biology, ETH Zurich, Zurich, Switzerland
| | - Lucas Hemmerle
- Institute of Microbiology, Department of Biology, ETH Zurich, Zurich, Switzerland
| | - Thomas Vonderach
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Andrea M Ochsner
- Institute of Microbiology, Department of Biology, ETH Zurich, Zurich, Switzerland
| | | | - Detlef Günther
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Julia A Vorholt
- Institute of Microbiology, Department of Biology, ETH Zurich, Zurich, Switzerland.
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19
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Kongasseri A, Madhesan T, Mitra S, Rao CVSB, Nagarajan S, Chinaraga PK, Deivasigamani P, Mohan AM. Fast and selective reversed-phase high performance liquid chromatographic separation of UO 2 2+ and Th 4+ ions using surface modified C 18 silica monolithic supports with target specific ionophoric ligands. RSC Adv 2023; 13:3317-3328. [PMID: 36756448 PMCID: PMC9869661 DOI: 10.1039/d2ra07495h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 01/12/2023] [Indexed: 01/25/2023] Open
Abstract
Reprocessing nuclear-spent fuels is highly demanded for enhanced resource efficacy and removal of the associated radiotoxicity. The present work elucidates the rapid separation of UO2 2+ and Th4+ ions using a reversed-phase high-performance liquid chromatographic (RP-HPLC) technique by dynamically modifying the surface of a C18 silica monolith column with target-specific ionophoric ligands. For the dynamic modification, four analogous aromatic amide ligands, N 1,N 1,N 3,N 3,N 5,N 5-hexa(alkyl)benzene-1,3,5-tricarboxamide (alkyl = butyl, hexyl, octyl, and decyl) as column modifiers were synthesized. The complexation properties and retention profiles of the amide-based column modifiers for the selective and sequential separation of UO2 2+ and Th4+ ions were investigated. In addition, the selective separation of UO2 2+ and Th4+ ions among the competitive ions of similar chemical properties were also studied. The ionophore immobilized C18 silica monolith columns demonstrated a varying degree of retention behavior for UO2 2+ and Th4+ ions (UO2 2+ is retained longer than Th4+ under all analytical conditions), eventually leading to rapid separations within a period of ≤5 min. A 0.1 M solution of 2-hydroxyisobutyric acid (HIBA, 1 mL min-1) served as the mobile phase, and the qualitative and quantitative assessment of the sequentially separated 5f metal ions was achieved through post-column derivatization reaction, using arsenazo(iii) as a post-column reagent (PCR; 1.5 mL min-1) prior to analysis using a UV-vis detector, at 665 nm (λ max). The developed technique was further evaluated by standardizing various analytical parameters, including modifier concentration, mobile phase pH, mobile phase flow rate, etc., to yield the best chromatographic separation. Also, the conceptual role of alkyl chain length (in the modifier) on the retention behavior of the studied metal ions was evaluated for cutting-edge future applications.
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Affiliation(s)
- Aswanidevi Kongasseri
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT) Vellore Tamil Nadu 632014 India +91-9600061952
| | - Thirumalai Madhesan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT) Vellore Tamil Nadu 632014 India +91-9600061952
| | - Suchashrita Mitra
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT) Vellore Tamil Nadu 632014 India +91-9600061952
| | - C. V. S. Brahmananda Rao
- Fuel Chemistry Division, Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research (IGCAR)KalpakkamTamil Nadu 603102India
| | - Sivaraman Nagarajan
- Fuel Chemistry Division, Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research (IGCAR)KalpakkamTamil Nadu 603102India
| | - Pitchaiah Kancharlapalli Chinaraga
- Fuel Chemistry Division, Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research (IGCAR)KalpakkamTamil Nadu 603102India
| | - Prabhakaran Deivasigamani
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT) Vellore Tamil Nadu 632014 India +91-9600061952
| | - Akhila Maheswari Mohan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT) Vellore Tamil Nadu 632014 India +91-9600061952
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20
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Paper M, Koch M, Jung P, Lakatos M, Nilges T, Brück TB. Rare earths stick to rare cyanobacteria: Future potential for bioremediation and recovery of rare earth elements. Front Bioeng Biotechnol 2023; 11:1130939. [PMID: 36926689 PMCID: PMC10011134 DOI: 10.3389/fbioe.2023.1130939] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/31/2023] [Indexed: 03/04/2023] Open
Abstract
Biosorption of metal ions by phototrophic microorganisms is regarded as a sustainable and alternative method for bioremediation and metal recovery. In this study, 12 cyanobacterial strains, including 7 terrestrial and 5 aquatic cyanobacteria, covering a broad phylogenetic diversity were investigated for their potential application in the enrichment of rare earth elements through biosorption. A screening for the maximum adsorption capacity of cerium, neodymium, terbium, and lanthanum was conducted in which Nostoc sp. 20.02 showed the highest adsorption capacity with 84.2-91.5 mg g-1. Additionally, Synechococcus elongatus UTEX 2973, Calothrix brevissima SAG 34.79, Desmonostoc muscorum 90.03, and Komarekiella sp. 89.12 were promising candidate strains, with maximum adsorption capacities of 69.5-83.4 mg g-1, 68.6-83.5 mg g-1, 44.7-70.6 mg g-1, and 47.2-67.1 mg g-1 respectively. Experiments with cerium on adsorption properties of the five highest metal adsorbing strains displayed fast adsorption kinetics and a strong influence of the pH value on metal uptake, with an optimum at pH 5 to 6. Studies on binding specificity with mixed-metal solutions strongly indicated an ion-exchange mechanism in which Na+, K+, Mg2+, and Ca2+ ions are replaced by other metal cations during the biosorption process. Depending on the cyanobacterial strain, FT-IR analysis indicated the involvement different functional groups like hydroxyl and carboxyl groups during the adsorption process. Overall, the application of cyanobacteria as biosorbent in bioremediation and recovery of rare earth elements is a promising method for the development of an industrial process and has to be further optimized and adjusted regarding metal-containing wastewater and adsorption efficiency by cyanobacterial biomass.
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Affiliation(s)
- Michael Paper
- Werner Siemens-Chair of Synthetic Biotechnology, School of Natural Sciences, Department of Chemistry, Technical University of Munich, Garching, Germany
| | - Max Koch
- Synthesis and Characterization of Innovative Materials, School of Natural Sciences, Department of Chemistry, Technical University of Munich, Garching, Germany
| | - Patrick Jung
- Integrative Biotechnology, University of Applied Sciences Kaiserslautern, Pirmasens, Germany
| | - Michael Lakatos
- Integrative Biotechnology, University of Applied Sciences Kaiserslautern, Pirmasens, Germany
| | - Tom Nilges
- Synthesis and Characterization of Innovative Materials, School of Natural Sciences, Department of Chemistry, Technical University of Munich, Garching, Germany
| | - Thomas B Brück
- Werner Siemens-Chair of Synthetic Biotechnology, School of Natural Sciences, Department of Chemistry, Technical University of Munich, Garching, Germany.,TUM AlgaeTec Center, Ludwig Bölkow Campus, Department of Aerospace and Geodesy, Taufkirchen, Germany
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21
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Luštinec J, Koubský T, Kalvoda L. Ab-initio evaluation of acid influence on chemical stability of hydrophilic diglycolamides. Front Mol Biosci 2022; 9:1063022. [PMID: 36567948 PMCID: PMC9769960 DOI: 10.3389/fmolb.2022.1063022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/18/2022] [Indexed: 12/12/2022] Open
Abstract
Diglycolamides (DGA) form one of the most promising groups of organic ligands used in bio-inspired solvent extraction processes of lanthanide and actinide ions. Continuous experimental and theoretical research is still performed in order to further improve their application properties including their chemical stability in the real extraction environment. This work provides results of our theoretical approach focused on inclusion of an acid influence on the DGAs chemical structure, treated in frame of the density functional theory. Three different models describing the acid action are proposed and investigated in attempt to increase the resulting accuracy of the chemical stability predictions based on verified theoretical descriptors. The procedure is applied and tested on the set of selected hydrophilic DGA representatives. Comparison of the model results obtained with and without acid action shows that two types of protection effects may occur: a 'direct' protection, accompanied by an explicit change of the ligand stability indicators, and an 'indirect' one consisting in reaction of acid molecules with radicals preceding the contact of latter with the extracting ligands. The possibility of the direct acid protection route is supported by the significant decrease of the Fukui charges found with the acid models included. On the other hand, there is in general no significant difference of trends in the calculated chemical stability descriptors suggesting that an indirect mechanism must be also considered in order to explain the experimentally observed protective role of acids on the chemical stability of investigated DGA derivatives.
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22
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Fan J, Duan L, Wang Y, Zhang X, Chen G, Liang J, Tian X, Li Z. Automated separation of Am from Sm by two-stage polymer-based HDEHP extraction chromatography. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Advances of magnetic nanohydrometallurgy using superparamagnetic nanomaterials as rare earth ions adsorbents: A grand opportunity for sustainable rare earth recovery. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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A novel and versatile precursor for the synthesis of highly preorganized tetradentate ligands based on phenanthroline and their binding properties towards lanthanides(III) ions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Kondoyanni M, Loukatos D, Maraveas C, Drosos C, Arvanitis KG. Bio-Inspired Robots and Structures toward Fostering the Modernization of Agriculture. Biomimetics (Basel) 2022; 7:69. [PMID: 35735585 PMCID: PMC9220914 DOI: 10.3390/biomimetics7020069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 11/28/2022] Open
Abstract
Biomimetics is the interdisciplinary cooperation of biology and technology that offers solutions to practical problems by analyzing biological systems and transferring their principles into applications. This review article focused on biomimetic innovations, including bio-inspired soft robots and swarm robots that could serve multiple functions, including the harvesting of fruits, pest control, and crop management. The research demonstrated commercially available biomimetic innovations, including robot bees by Arugga AI Farming and the Robotriks Traction Unit (RTU) precision farming equipment. Additionally, soft robotic systems have made it possible to mitigate the risk of surface bruises, rupture, the crushing destruction of plant tissue, and plastic deformation in the harvesting of fruits with a soft rind such as apples, cherries, pears, stone fruits, kiwifruit, mandarins, cucumbers, peaches, and pome. Even though the smart farming technologies, which were developed to mimic nature, could help prevent climate change and enhance the intensification of agriculture, there are concerns about long-term ecological impact, cost, and their inability to complement natural processes such as pollination. Despite the problems, the market for bio-inspired technologies with potential agricultural applications to modernize farming and solve the abovementioned challenges has increased exponentially. Future research and development should lead to low-cost FEA robotic grippers and FEA-tendon-driven grippers for crop harvesting. In brief, soft robots and swarm robotics have immense potential in agriculture.
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Affiliation(s)
- Maria Kondoyanni
- Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Str., Botanikos, 11855 Athens, Greece; (M.K.); (C.M.); (K.G.A.)
| | - Dimitrios Loukatos
- Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Str., Botanikos, 11855 Athens, Greece; (M.K.); (C.M.); (K.G.A.)
| | - Chrysanthos Maraveas
- Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Str., Botanikos, 11855 Athens, Greece; (M.K.); (C.M.); (K.G.A.)
| | - Christos Drosos
- Department of Industrial Design and Production Engineering, University of West Attica, 250 Thivon & P. Ralli Str., 12241 Egaleo, Greece;
| | - Konstantinos G. Arvanitis
- Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Str., Botanikos, 11855 Athens, Greece; (M.K.); (C.M.); (K.G.A.)
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26
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Das S, Das PP, Walton JW, Ghoshal K, Patra L, Bhattacharyya M. An excited state intramolecular proton transfer induced phosphate ion targeted ratiometric fluorescent switch to monitor phosphate ions in human peripheral blood mononuclear cells. Dalton Trans 2022; 51:10779-10786. [PMID: 35611756 DOI: 10.1039/d2dt00581f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Detection of biological phosphate is very important for environmental and health care applications. In this study, a new ratiometric fluorescent probe (E)-N'-(3-(benzo[d]thiazol-2-yl)-2-hydroxybenzylidene) picolinohydrazide (BTP) is developed and exhibits a prominent excited-state intramolecular proton-transfer (ESIPT) mechanism. The probe BTP undergoes a unique phosphate induced hydrolytic reaction in mixed aqueous solution which produces a colorimetric change associated with a huge red-shift of ∼130 nm in the UV-visible absorption spectrum. Initially, BTP exhibits a strong fluorescence emission as the ESIPT process is 'on' and the tautomeric hydrogen remains flexible and is free to give two tautomeric forms. Eventually, after the addition of PO43-, the two tautomeric forms break and thereby shift the equilibrium towards the 'enol' form. The phosphate ion binds with BTP which is associated with a ratiometric change and accounts for an enhancement in the fluorescence intensity with a large blue shift and the limit of detection value of 8.33 × 10-8 M in a mixed aqueous medium. The binding constant (1.92 × 105 M-1) proportionally reflects the stability of the complexation between the binding sites of BTP with the guest PO43- anion. The probable mechanism is supported by the NMR spectroscopy studies. The sensing phenomenon is found to be reversible towards Zn2+ and thus the sensor beautifully mimics the INHIBIT logic gate. Observations have been made in fluorescence imaging studies with human peripheral blood mononuclear cells (PBMCs) which indicates that BTP can be employed to successfully monitor the phosphate ion in human PBMCs.
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Affiliation(s)
- Sangita Das
- Durham University, Department of Chemistry, Durham, DH1 3LE, UK.
| | - Partha Pratim Das
- Center for Novel States of Complex Materials Research, Seoul National University, Seoul, 08826, Republic of Korea
| | - James W Walton
- Durham University, Department of Chemistry, Durham, DH1 3LE, UK.
| | - Kakali Ghoshal
- Department of Biochemistry, University of Calcutta, Kolkata 700019, India
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27
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Glasneck F, Roode‐Gutzmer QI, Stumpf T, Kersting B. Tetra-Substituted p-Tert-Butylcalix[4]Arene with Phosphoryl and Salicylamide Functional Groups: Synthesis, Complexation and Selective Extraction of f-Element Cations. Chemistry 2022; 28:e202104301. [PMID: 34957610 PMCID: PMC9306641 DOI: 10.1002/chem.202104301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Indexed: 11/08/2022]
Abstract
A new series of lanthanide (1-5) and uranyl (6) complexes with a tetra-substituted bifunctional calixarene ligand H2 L is described. The coordination environment for the Ln3+ and UO2 2+ ions is provided by phosphoryl and salicylamide functional groups appended to the lower rim of the p-tert-butylcalix[4]arene scaffold. Ligand interactions with lanthanide cations (light: La3+ , Pr3+ ; intermediate: Eu3+ and Gd3+ ; and heavy: Yb3+ ), as well as the uranyl cation (UO2 2+ ) is examined in the solution and solid state, respectively with spectrophotometric titration and single crystal X-ray diffractometry. The ligand is fully deprotonated in the complexation of trivalent lanthanide ions forming di-cationic complexes 2 : 2 M : L, [Ln2 (L)2 (H2 O)]2+ (1-5), in solution, whereas uranyl formed a 1 : 1 M : L complex [UO2 (L)(MeOH)]∞ (6) that demonstrated very limited solubility in 12 organic solvents. Solvent extraction behaviour is examined for cation selectivity and extraction efficiency. H2 L was found to be an effective extracting agent for UO2 2+ over La3+ and Yb3+ cations. The separation factors at pH 6.0 are: βUO2 2 + /La3 + =121.0 and βUO2 2 + /Yb3 + =70.0.
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Affiliation(s)
- Florian Glasneck
- Institute of Inorganic ChemistryLeipzig UniversityJohannisallee 2904103LeipzigGermany
| | - Quirina I. Roode‐Gutzmer
- Institute of Resource EcologyHelmholtz-Zentrum Dresden-RossendorfBautzner Landstrasse 40001328DresdenGermany
| | - Thorsten Stumpf
- Institute of Resource EcologyHelmholtz-Zentrum Dresden-RossendorfBautzner Landstrasse 40001328DresdenGermany
| | - Berthold Kersting
- Institute of Inorganic ChemistryLeipzig UniversityJohannisallee 2904103LeipzigGermany
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28
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Zhang G, Mei L, Ding J, Su K, Guo Q, Lv G, Liao L. Recent progress on lanthanide complexes/clay minerals hybrid luminescent materials. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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29
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Wu Q, Liu X, Chai Z, Cheng K, Xu G, Jiang L, Liu M, Li C. Lanmodulin Remains Unfold and Fails to Interact with Lanthanide Ions in Escherichia coli Cells. Chem Commun (Camb) 2022; 58:8230-8233. [DOI: 10.1039/d2cc02038f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the conformation of a newly discovered specific lanthanide ions (Ln3+) binding protein, Lanmodulin (LanM), and its inteaction with Ln3+ in Escherichia coli cells using In-cell NMR. We found...
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30
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Dong Z, Mattocks JA, Deblonde GJP, Hu D, Jiao Y, Cotruvo JA, Park DM. Bridging Hydrometallurgy and Biochemistry: A Protein-Based Process for Recovery and Separation of Rare Earth Elements. ACS CENTRAL SCIENCE 2021; 7:1798-1808. [PMID: 34841054 PMCID: PMC8614107 DOI: 10.1021/acscentsci.1c00724] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Indexed: 05/20/2023]
Abstract
The extraction and subsequent separation of individual rare earth elements (REEs) from REE-bearing feedstocks represent a challenging yet essential task for the growth and sustainability of renewable energy technologies. As an important step toward overcoming the technical and environmental limitations of current REE processing methods, we demonstrate a biobased, all-aqueous REE extraction and separation scheme using the REE-selective lanmodulin protein. Lanmodulin was conjugated onto porous support materials using thiol-maleimide chemistry to enable tandem REE purification and separation under flow-through conditions. Immobilized lanmodulin maintains the attractive properties of the soluble protein, including remarkable REE selectivity, the ability to bind REEs at low pH, and high stability over numerous low-pH adsorption/desorption cycles. We further demonstrate the ability of immobilized lanmodulin to achieve high-purity separation of the clean-energy-critical REE pair Nd/Dy and to transform a low-grade leachate (0.043 mol % REEs) into separate heavy and light REE fractions (88 mol % purity of total REEs) in a single column run while using ∼90% of the column capacity. This ability to achieve, for the first time, tandem extraction and grouped separation of REEs from very complex aqueous feedstock solutions without requiring organic solvents establishes this lanmodulin-based approach as an important advance for sustainable hydrometallurgy.
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Affiliation(s)
- Ziye Dong
- Critical
Materials Institute, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Joseph A. Mattocks
- Department
of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Gauthier J.-P. Deblonde
- Critical
Materials Institute, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
- Glenn
T. Seaborg Institute, Lawrence Livermore
National Laboratory, Livermore, California 94550, United States
| | - Dehong Hu
- Environmental
Molecular Sciences Laboratory, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
| | - Yongqin Jiao
- Critical
Materials Institute, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Joseph A. Cotruvo
- Department
of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- E-mail:
| | - Dan M. Park
- Critical
Materials Institute, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
- E-mail:
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31
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Leveraging slow DOTA f-element complexation kinetics to enable separations by kinetic design. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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32
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Featherston ER, Issertell EJ, Cotruvo JA. Probing Lanmodulin's Lanthanide Recognition via Sensitized Luminescence Yields a Platform for Quantification of Terbium in Acid Mine Drainage. J Am Chem Soc 2021; 143:14287-14299. [PMID: 34432449 DOI: 10.1021/jacs.1c06360] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Lanmodulin is the first natural, selective macrochelator for f elements-a protein that binds lanthanides with picomolar affinity at 3 EF hands, motifs that instead bind calcium in most other proteins. Here, we use sensitized terbium luminescence to probe the mechanism of lanthanide recognition by this protein as well as to develop a terbium-specific biosensor that can be applied directly in environmental samples. By incorporating tryptophan residues into specific EF hands, we infer the order of metal binding of these three sites. Despite lanmodulin's remarkable lanthanide binding properties, its coordination of approximately two solvent molecules per site (by luminescence lifetime) and metal dissociation kinetics (koff = 0.02-0.05 s-1, by stopped-flow fluorescence) are revealed to be rather ordinary among EF hands; what sets lanmodulin apart is that metal association is nearly diffusion limited (kon ≈ 109 M-1 s-1). Finally, we show that Trp-substituted lanmodulin can quantify 3 ppb (18 nM) terbium directly in acid mine drainage at pH 3.2 in the presence of a 100-fold excess of other rare earths and a 100 000-fold excess of other metals using a plate reader. These studies not only yield insight into lanmodulin's mechanism of lanthanide recognition and the structures of its metal binding sites but also show that this protein's unique combination of affinity and selectivity outperforms synthetic luminescence-based sensors, opening the door to rapid and inexpensive methods for selective sensing of individual lanthanides in the environment and in-line monitoring in industrial operations.
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Affiliation(s)
- Emily R Featherston
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Edward J Issertell
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Joseph A Cotruvo
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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33
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Pallares RM, An DD, Deblonde GJP, Kullgren B, Gauny SS, Jarvis EE, Abergel RJ. Efficient discrimination of transplutonium actinides by in vivo models. Chem Sci 2021; 12:5295-5301. [PMID: 34168780 PMCID: PMC8179619 DOI: 10.1039/d0sc06610a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/24/2021] [Indexed: 01/18/2023] Open
Abstract
Transplutonium actinides are among the heaviest elements whose macroscale chemical properties can be experimentally tested. Being scarce and hazardous, their chemistry is rather unexplored, and they have traditionally been considered a rather homogeneous group, with most of their characteristics extrapolated from lanthanide surrogates. Newly emerged applications for these elements, combined with their persistent presence in nuclear waste, however, call for a better understanding of their behavior in complex living systems. In this work, we explored the biodistribution and excretion profiles of four transplutonium actinides (248Cm, 249Bk, 249Cf and 253Es) in a small animal model, and evaluated their in vivo sequestration and decorporation by two therapeutic chelators, diethylenetriamine pentaacetic acid and 3,4,3-LI(1,2-HOPO). Notably, the organ deposition patterns of those transplutonium actinides were element-dependent, particularly in the liver and skeleton, where lower atomic number radionuclides showed up to 7-fold larger liver/skeleton accumulation ratios. Nevertheless, the metal content in multiple organs was significantly decreased for all tested actinides, particularly in the liver, after administering the therapeutic agent 3,4,3-LI(1,2-HOPO) post-contamination. Lastly, the systematic comparison of the radionuclide biodistributions showed discernibly element-dependent organ depositions, which may provide insights into design rules for new bio-inspired chelating systems with high sequestration and separation performance.
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Affiliation(s)
- Roger M Pallares
- Chemical Sciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Dahlia D An
- Chemical Sciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Gauthier J-P Deblonde
- Chemical Sciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Glenn T. Seaborg Institute, Physical and Life Sciences, Lawrence Livermore National Laboratory Livermore CA 94550 USA
| | - Birgitta Kullgren
- Chemical Sciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Stacey S Gauny
- Chemical Sciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Erin E Jarvis
- Chemical Sciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Rebecca J Abergel
- Chemical Sciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Department of Nuclear Engineering, University of California Berkeley CA 94720 USA
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34
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Mattocks JA, Tirsch JL, Cotruvo JA. Determination of affinities of lanthanide-binding proteins using chelator-buffered titrations. Methods Enzymol 2021; 651:23-61. [PMID: 33888205 DOI: 10.1016/bs.mie.2021.01.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The recent discoveries of the first proteins that bind lanthanides as part of their biological function not only are relevant to the emerging field of lanthanide-dependent biology, but also hold promise to revolutionize the technologically critical rare earths industry. Although protocols to assess the thermodynamics of metal-protein interactions are well established for "traditional" metal ions in biology, the characterization of lanthanide-binding proteins presents a challenge to biochemists due to the lanthanides' Lewis acidity, propensity for hydrolysis, and high-affinity complexes with biological ligands. These properties necessitate the preparation of metal stock solutions with very low buffered "free" metal concentrations (e.g., femtomolar to nanomolar) for such determinations. Herein we describe several protocols to overcome these challenges. First, we present standardization methods for the preparation of chelator-buffered solutions of lanthanide ions with easily calculated free metal concentrations. We also describe how these solutions can be used in concert with analytical methods including UV-visible spectrophotometry, circular dichroism spectroscopy, Förster resonance energy transfer (FRET), and sensitized terbium luminescence, in order to accurately determine dissociation constants (Kds) of lanthanide-protein complexes. Finally, we highlight how application of these methods to lanthanide-binding proteins, such as lanmodulin, has yielded insights into selective recognition of lanthanides in biology. We anticipate that these protocols will facilitate discovery and characterization of additional native lanthanide-binding proteins, will motivate the understanding of their biological context, and will prompt their applications in biotechnology.
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Affiliation(s)
- Joseph A Mattocks
- Department of Chemistry, The Pennsylvania State University, University Park, Philadelphia, PA, United States
| | - Jonathan L Tirsch
- Department of Chemistry, The Pennsylvania State University, University Park, Philadelphia, PA, United States
| | - Joseph A Cotruvo
- Department of Chemistry, The Pennsylvania State University, University Park, Philadelphia, PA, United States.
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