1
|
Bolla PA, Huggias S, Serradell MA, Ruggera JF, Casella ML. Synthesis and Catalytic Application of Silver Nanoparticles Supported on Lactobacillus kefiri S-Layer Proteins. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2322. [PMID: 33238585 PMCID: PMC7700121 DOI: 10.3390/nano10112322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/14/2020] [Accepted: 11/18/2020] [Indexed: 12/14/2022]
Abstract
Research on nanoparticles obtained on biological supports is a topic of growing interest in nanoscience, especially regarding catalytic applications. Silver nanoparticles (AgNPs) have been studied due to their low toxicity, but they tend to aggregation, oxidation, and low stability. In this work, we synthesized and characterized AgNPs supported on S-layer proteins (SLPs) as bidimensional regularly arranged biotemplates. By different reduction strategies, six AgNPs of variable sizes were obtained on two different SLPs. Transmission electron microscopy (TEM) images showed that SLPs are mostly decorated by evenly distributed AgNPs; however, a drastic reduction by NaBH4 led to large AgNPs whereas a smooth reduction with H2 or H2/NaBH4 at low concentration leads to smaller AgNPs, regardless of the SLP used as support. All the nanosystems showed conversion values between 75-80% of p-nitrophenol to p-aminophenol, however, the increment in the AgNPs size led to a great decrease in Kapp showing the influence of reduction strategy in the performance of the catalysts. Density functional theory (DFT) calculations indicated that the adsorption of p-nitrophenolate species through the nitro group is the most favored mechanism, leading to p-aminophenol as the only feasible product of the reaction, which was corroborated experimentally.
Collapse
Affiliation(s)
- Patricia A. Bolla
- Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco”—CINDECA (CONICET CCT-La Plata—UNLP—CIC), Calle 47 N° 257, B1900AJK La Plata, Argentina; (P.A.B.); (S.H.); (J.F.R.)
| | - Sofía Huggias
- Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco”—CINDECA (CONICET CCT-La Plata—UNLP—CIC), Calle 47 N° 257, B1900AJK La Plata, Argentina; (P.A.B.); (S.H.); (J.F.R.)
| | - María A. Serradell
- Cátedra de Microbiología, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), 47 y 115 s/n, B1900AJK La Plata, Argentina;
| | - José F. Ruggera
- Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco”—CINDECA (CONICET CCT-La Plata—UNLP—CIC), Calle 47 N° 257, B1900AJK La Plata, Argentina; (P.A.B.); (S.H.); (J.F.R.)
| | - Mónica L. Casella
- Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco”—CINDECA (CONICET CCT-La Plata—UNLP—CIC), Calle 47 N° 257, B1900AJK La Plata, Argentina; (P.A.B.); (S.H.); (J.F.R.)
| |
Collapse
|
2
|
Freeman A. Protein-Mediated Biotemplating on the Nanoscale. Biomimetics (Basel) 2017; 2:E14. [PMID: 31105177 PMCID: PMC6352702 DOI: 10.3390/biomimetics2030014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 07/18/2017] [Accepted: 08/01/2017] [Indexed: 12/26/2022] Open
Abstract
Purified proteins offer a homogeneous population of biological nanoparticles, equipped in many cases with specific binding sites enabling the directed self-assembly of envisaged one-, two- or three-dimensional arrays. These arrays may serve as nanoscale biotemplates for the preparation of novel functional composite materials, which exhibit potential applications, especially in the fields of nanoelectronics and optical devices. This review provides an overview of the field of protein-mediated biotemplating, focussing on achievements made throughout the past decade. It is comprised of seven sections designed according to the size and configuration of the protein-made biotemplate. Each section describes the design and size of the biotemplate, the resulting hybrid structures, the fabrication methodology, the analytical tools employed for the structural analysis of the hybrids obtained, and, finally, their claimed/intended applications and a feasibility demonstration (whenever available). In conclusion, a short assessment of the overall status of the achievements already made vs. the future challenges of this field is provided.
Collapse
Affiliation(s)
- Amihay Freeman
- Department of Molecular Microbiology and Biotechnology, Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel.
| |
Collapse
|
3
|
Trivalent Cation Induced Bundle Formation of Filamentous fd Phages. Macromol Biosci 2015; 15:1262-73. [DOI: 10.1002/mabi.201500046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 04/02/2015] [Indexed: 11/07/2022]
|
4
|
Rad B, Haxton TK, Shon A, Shin SH, Whitelam S, Ajo-Franklin CM. Ion-specific control of the self-assembly dynamics of a nanostructured protein lattice. ACS NANO 2015; 9:180-90. [PMID: 25494454 PMCID: PMC4310639 DOI: 10.1021/nn502992x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 12/10/2014] [Indexed: 05/22/2023]
Abstract
Self-assembling proteins offer a potential means of creating nanostructures with complex structure and function. However, using self-assembly to create nanostructures with long-range order whose size is tunable is challenging, because the kinetics and thermodynamics of protein interactions depend sensitively on solution conditions. Here we systematically investigate the impact of varying solution conditions on the self-assembly of SbpA, a surface-layer protein from Lysinibacillus sphaericus that forms two-dimensional nanosheets. Using high-throughput light scattering measurements, we mapped out diagrams that reveal the relative yield of self-assembly of nanosheets over a wide range of concentrations of SbpA and Ca(2+). These diagrams revealed a localized region of optimum yield of nanosheets at intermediate Ca(2+) concentration. Replacement of Mg(2+) or Ba(2+) for Ca(2+) indicates that Ca(2+) acts both as a specific ion that is required to induce self-assembly and as a general divalent cation. In addition, we use competitive titration experiments to find that 5 Ca(2+) bind to SbpA with an affinity of 67.1 ± 0.3 μM. Finally, we show via modeling that nanosheet assembly occurs by growth from a negligibly small critical nucleus. We also chart the dynamics of nanosheet size over a variety of conditions. Our results demonstrate control of the dynamics and size of the self-assembly of a nanostructured lattice, the constituents of which are one of a class of building blocks able to form novel hybrid nanomaterials.
Collapse
Affiliation(s)
- Behzad Rad
- Materials Sciences Division, Physical Biosciences Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8075, United States
| | - Thomas K. Haxton
- Materials Sciences Division, Physical Biosciences Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8075, United States
| | - Albert Shon
- Materials Sciences Division, Physical Biosciences Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8075, United States
- Department of Chemical and Biomolecular Engineering, UC Berkeley, Berkeley, California 94720-1462, United States
| | - Seong-Ho Shin
- Materials Sciences Division, Physical Biosciences Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8075, United States
- Department of Chemistry, UC Berkeley, Berkeley, California 94720-1460, United States
| | - Stephen Whitelam
- Materials Sciences Division, Physical Biosciences Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8075, United States
| | - Caroline M. Ajo-Franklin
- Materials Sciences Division, Physical Biosciences Division, and Synthetic Biology Institute, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8075, United States
- Address correspondence to
| |
Collapse
|
5
|
Quantitative analysis of molecular-level DNA crystal growth on a 2D surface. Sci Rep 2013; 3:2115. [PMID: 23817625 PMCID: PMC3698493 DOI: 10.1038/srep02115] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 06/13/2013] [Indexed: 11/09/2022] Open
Abstract
Crystallization is an essential process for understanding a molecule's aggregation behavior. It provides basic information on crystals, including their nucleation and growth processes. Deoxyribonucleic acid (DNA) has become an interesting building material because of its remarkable properties for constructing various shapes of submicron-scale DNA crystals by self-assembly. The recently developed substrate-assisted growth (SAG) method produces fully covered DNA crystals on various substrates using electrostatic interactions and provides an opportunity to observe the overall crystallization process. In this study, we investigated quantitative analysis of molecular-level DNA crystallization using the SAG method. Coverage and crystal size distribution were studied by controlling the external parameters such as monomer concentration, annealing temperature, and annealing time. Rearrangement during crystallization was also discussed. We expect that our study will provide overall picture of the fabrication process of DNA crystals on the charged substrate and promote practical applications of DNA crystals in science and technology.
Collapse
|
6
|
Korkmaz N, Kim YJ, Nam CH. Bacteriophages as Templates for Manufacturing Supramolecular Structures. Macromol Biosci 2012; 13:376-87. [DOI: 10.1002/mabi.201200290] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 09/18/2012] [Indexed: 01/31/2023]
|
7
|
Bobeth M, Blecha A, Blüher A, Mertig M, Korkmaz N, Ostermann K, Rödel G, Pompe W. Formation of tubes during self-assembly of bacterial surface layers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:15102-15111. [PMID: 22029537 DOI: 10.1021/la203430q] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Based on experimental studies on tube formation during self-assembly of bacterial surface (S)-layers, a mechanistic model for describing the underlying basic mechanisms is proposed and the effect of process parameters on growth velocity and tube radius is investigated. The S-layer is modeled as a curved sheet with discrete binding sites for the association of monomers distributed along the S-layer edges. Reported changes of the tube radius owing to genetic protein modifications are explained within the framework of continuum mechanics. S-layer growth velocity and shape development are analyzed by Monte Carlo simulation in their dependence on the attachment and detachment frequencies of monomers at the S-layer. For curved S-layer patches, a criterion for the formation of S-layer tubes is derived. Accordingly, tubes can form only within a certain range of the initial monomer concentration. Furthermore, the effect of calcium ion concentration on tube formation is discussed, including recent experimental findings on the calcium effect.
Collapse
Affiliation(s)
- Manfred Bobeth
- Institut für Werkstoffwissenschaft and Max-Bergmann-Zentrum für Biomaterialien, Technische Universität Dresden, 01062 Dresden, Germany
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Korkmaz N, Börrnert F, Köhler D, Mendes RG, Bachmatiuk A, Rümmeli MH, Büchner B, Eng LM, Rödel G. Metallization and investigation of electrical properties of in vitro recrystallized mSbsC-eGFP assemblies. NANOTECHNOLOGY 2011; 22:375606. [PMID: 21857099 DOI: 10.1088/0957-4484/22/37/375606] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Surface layer (SL) proteins are self-assembling nanosized arrays which can be recrystallized in solution or on surfaces. In this paper, we investigate the metallization, contact potential difference and conductivity of in vitro recrystallized mSbsC-eGFP tube-like assemblies for possible applications in nanobiotechnology. Treatment of mSbsC-eGFP tube-like structures with 150 mM Pt salt solution resulted in the formation of metallized SL assemblies decorated with Pt nanoparticles (∅ > 3 nm) which were closely packed and aggregated into metal clusters. Kelvin probe force microscopy (KPFM) measurements revealed that metallized and unmetallized SL templates showed different surface potential behaviours, demonstrating that the metal coating changes the electrostatic surface characteristics of SL assemblies. In situ conductivity measurements showed that unmetallized SL assemblies were not conductive. Metallized samples showed linear I-V dependence between - 1 and + 1 V with a conductivity of ∼ 10(3) S m( - 1).
Collapse
Affiliation(s)
- Nuriye Korkmaz
- Institut für Genetik, Technische Universität Dresden, 01217 Dresden, Germany. nuriye
| | | | | | | | | | | | | | | | | |
Collapse
|