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Pallares RM, Charrier M, Tejedor-Sanz S, Li D, Ashby PD, Ajo-Franklin CM, Ralston CY, Abergel RJ. Precision Engineering of 2D Protein Layers as Chelating Biogenic Scaffolds for Selective Recovery of Rare-Earth Elements. J Am Chem Soc 2022; 144:854-861. [PMID: 34985894 DOI: 10.1021/jacs.1c10802] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rare-earth elements, which include the lanthanide series, are key components of many clean energy technologies, including wind turbines and photovoltaics. Because most of these 4f metals are at high risk of supply chain disruption, the development of new recovery technologies is necessary to avoid future shortages, which may impact renewable energy production. This paper reports the synthesis of a non-natural biogenic material as a potential platform for bioinspired lanthanide extraction. The biogenic material takes advantage of the atomically precise structure of a 2D crystalline protein lattice with the high lanthanide binding affinity of hydroxypyridinonate chelators. Luminescence titration data demonstrated that the engineered protein layers have affinities for all tested lanthanides in the micromolar-range (dissociation constants) and a higher binding affinity for the lanthanide ions with a smaller ionic radius. Furthermore, competitive titrations confirmed the higher selectivity (up to several orders of magnitude) of the biogenic material for lanthanides compared to other cations commonly found in f-element sources. Lastly, the functionalized protein layers could be reused in several cycles by desorbing the bound metal with citrate solutions. Taken together, these results highlight biogenic materials as promising bioadsorption platforms for the selective binding of lanthanides, with potential applications in the recovery of these critical elements from waste.
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Affiliation(s)
- Roger M Pallares
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Marimikel Charrier
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Sara Tejedor-Sanz
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Dong Li
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Paul D Ashby
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Caroline M Ajo-Franklin
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Department of BioSciences, Rice University, Houston, Texas 77005, United States
| | - Corie Y Ralston
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Rebecca J Abergel
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Department of Nuclear Engineering, University of California, Berkeley, California 94720, United States
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2
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Mann VR, Manea F, Borys NJ, Ajo-Franklin CM, Cohen BE. Controlled and Stable Patterning of Diverse Inorganic Nanocrystals on Crystalline Two-Dimensional Protein Arrays. Biochemistry 2021; 60:1063-1074. [PMID: 33691067 PMCID: PMC8162747 DOI: 10.1021/acs.biochem.1c00032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Controlled patterning of nanoparticles on bioassemblies enables synthesis of complex materials for applications in optics, nanoelectronics, and sensing. Biomolecular self-assembly offers molecular control for engineering patterned nanomaterials, but current approaches have been limited in their ability to combine high nanoparticle coverage with generality that enables incorporation of multiple nanoparticle types. Here, we synthesize photonic materials on crystalline two-dimensional (2D) protein sheets using orthogonal bioconjugation reactions, organizing quantum dots (QDs), gold nanoparticles (AuNPs), and upconverting nanoparticles along the surface-layer (S-layer) protein SbsB from the extremophile Geobacillus stearothermophilus. We use electron and optical microscopy to show that isopeptide bond-forming SpyCatcher and SnoopCatcher systems enable the simultaneous and controlled conjugation of multiple types of nanoparticles (NPs) at high densities along the SbsB sheets. These NP conjugation reactions are orthogonal to each other and to Au-thiol bond formation, allowing tailorable nanoparticle combinations at sufficient labeling efficiencies to permit optical interactions between nanoparticles. Fluorescence lifetime imaging of SbsB sheets conjugated to QDs and AuNPs at distinct attachment sites shows spatially heterogeneous QD emission, with shorter radiative decays and brighter fluorescence arising from plasmonic enhancement at short interparticle distances. This specific, stable, and efficient conjugation of NPs to 2D protein sheets enables the exploration of interactions between pairs of nanoparticles at defined distances for the engineering of protein-based photonic nanomaterials.
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Affiliation(s)
- Victor R. Mann
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
| | - Francesca Manea
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
- Current address: Perfect Day Foods, Berkeley, CA 94608
| | - Nicholas J. Borys
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
- Current address: Department of Physics, Montana State University, Bozeman, MT 59717
| | - Caroline M. Ajo-Franklin
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
- Division of Molecular Biophysics & Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
- Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
- Department of BioSciences, Rice University, Houston, TX 77005
| | - Bruce E. Cohen
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
- Division of Molecular Biophysics & Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
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Manea F, Garda VG, Rad B, Ajo-Franklin CM. Programmable assembly of 2D crystalline protein arrays into covalently stacked 3D bionanomaterials. Biotechnol Bioeng 2020; 117:912-923. [PMID: 31885073 DOI: 10.1002/bit.27261] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/20/2019] [Accepted: 12/22/2019] [Indexed: 12/31/2022]
Abstract
Rational embellishment of self-assembling two-dimensional (2D) proteins make it possible to build 3D nanomaterials with novel catalytic, optoelectronic and mechanical properties. However, introducing multiple sites of embellishment into 2D protein arrays without affecting the self-assembly is challenging, limiting the ability to program in additional functionality and new 3D configurations. Here we introduce two orthogonal covalent linkages at multiple sites in a 2D crystalline-forming protein without affecting its self-assembly. We first engineered the surface-layer protein SbsB from Geobacillus stearothermophilus pV72/p2 to display isopeptide bond-forming protein conjugation pairs, SpyTag or SnoopTag, at four positions spaced 5.7-10.5 nm apart laterally and 3 nm axially. The C-terminal and two newly-identified locations within SbsB monomer accommodated the short SpyTag or SnoopTag peptide tags without affecting the 2D lattice structure. Introducing tags at distinct locations enabled orthogonal and covalent binding of SpyCatcher- or SnoopCatcher-protein fusions to micron-sized 2D nanosheets. By introducing different types of bifunctional cross-linkers, the dual-functionalized nanosheets were programmed to self-assemble into different 3D stacks, all of which retain their nanoscale order. Thus, our work creates a modular protein platform that is easy to program to create dual-functionalized 2D and lamellar 3D nanomaterials with new catalytic, optoelectronic, and mechanical properties.
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Affiliation(s)
- Francesca Manea
- The Molecular Foundry, Molecular Biophysics and Integrated Bioimaging Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California
| | - Virginia G Garda
- The Molecular Foundry, Molecular Biophysics and Integrated Bioimaging Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California
| | - Behzad Rad
- The Molecular Foundry, Molecular Biophysics and Integrated Bioimaging Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California
| | - Caroline M Ajo-Franklin
- The Molecular Foundry, Molecular Biophysics and Integrated Bioimaging Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California
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Juhas M, Davenport PW, Brown JR, Yarkoni O, Ajioka JW. Meeting report: The Cambridge BioDesign TechEvent - Synthetic Biology, a new “Age of Wonder”? Biotechnol J 2013. [DOI: 10.1002/biot.201300042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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