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Fenati RA, Chen Z, Yamagishi Y, Tsukakoshi K, Ikebukuor K, Manian A, Russo SP, Yamazaki T, Ellis AV. Enhancement of DNAzymatic activity using iterative in silico maturation. J Mater Chem B 2022; 10:8960-8969. [DOI: 10.1039/d2tb01638a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Enhancement of DNZymatic activity using a combined iterative in silico and in vitro method as a cheaper and more stable alternative to antibodies or enzymes.
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Affiliation(s)
- Renzo A. Fenati
- Flinders Centre for Nanoscale Science and Technology, Flinders University, Sturt Road, Bedford Park, Adelaide, South Australia, 5042, Australia
- School of Chemical and Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Grattan Street, Parkville, Victoria, 3010, Australia
- ARC Centre of Excellence in Exciton Science, School of Chemistry, Monash University, Clayton, 3800, Australia
| | - Zifei Chen
- ARC Centre of Excellence in Exciton Science, School of Chemistry, University of Melbourne, Parkville, 3010, Australia
| | - Yasuko Yamagishi
- Department of Biotechnology & Life sciences, Tokyo University of Agriculture and Technology, 2-24-21 Naka-Cho, Koganei, Tokyo, 184-8588, Japan
| | - Kaori Tsukakoshi
- Department of Biotechnology & Life sciences, Tokyo University of Agriculture and Technology, 2-24-21 Naka-Cho, Koganei, Tokyo, 184-8588, Japan
| | - Kazunori Ikebukuor
- Department of Biotechnology & Life sciences, Tokyo University of Agriculture and Technology, 2-24-21 Naka-Cho, Koganei, Tokyo, 184-8588, Japan
| | - Anjay Manian
- ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne, 3000, Australia
| | - Salvy P. Russo
- ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne, 3000, Australia
| | - Tomohiko Yamazaki
- Nanomedicine Group, Research Center for Functional Materials, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0047, Japan
- Division of Life Science, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, 060-0808, Japan
| | - Amanda V. Ellis
- School of Chemical and Biomedical Engineering, Faculty of Engineering and Information Technology, The University of Melbourne, Grattan Street, Parkville, Victoria, 3010, Australia
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Zhang H, An P, Zhou W, Guan BY, Zhang P, Dong J, Lou XW(D. Dynamic traction of lattice-confined platinum atoms into mesoporous carbon matrix for hydrogen evolution reaction. SCIENCE ADVANCES 2018; 4:eaao6657. [PMID: 29372181 PMCID: PMC5775028 DOI: 10.1126/sciadv.aao6657] [Citation(s) in RCA: 225] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 12/11/2017] [Indexed: 05/19/2023]
Abstract
Constructing atomically dispersed platinum (Pt) electrocatalysts is essential to build high-performance and cost-effective electrochemical water-splitting systems. We present a novel strategy to realize the traction and stabilization of isolated Pt atoms in the nitrogen-containing porous carbon matrix (Pt@PCM). In comparison with the commercial Pt/C catalyst (20 weight %), the as-prepared Pt@PCM catalyst exhibits significantly boosted mass activity (up to 25 times) for hydrogen evolution reaction. Results of extended x-ray absorption fine structure investigation and density functional theory calculation suggest that the active sites are associated with the lattice-confined Pt centers and the activated carbon (C)/nitrogen (N) atoms at the adjacency of the isolated Pt centers. This strategy may provide insights into constructing highly efficient single-atom catalysts for different energy-related applications.
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Affiliation(s)
- Huabin Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Pengfei An
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Zhou
- Department of Applied Physics, Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Bu Yuan Guan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Peng Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Juncai Dong
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xiong Wen (David) Lou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
- Corresponding author.
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Banerjee AL, Eiler D, Roy BC, Jia X, Haldar MK, Mallik S, Srivastava DK. Spacer-based selectivity in the binding of "two-prong" ligands to recombinant human carbonic anhydrase I. Biochemistry 2005; 44:3211-24. [PMID: 15736932 DOI: 10.1021/bi047737b] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Benzenesulfonamide and iminodiacetate (IDA)-conjugated Cu(2+) independently interact at the active site and a peripheral site of carbonic anhydrases, respectively [Banerjee, A. L., Swanson, M., Roy, B. C., Jia, X., Haldar, M. K., Mallik, S., and Srivastava, D. K. (2004) J. Am. Chem. Soc. 126, 10875-10883]. By attaching IDA-bound Cu(2+) to benzenesulfonamide via different chain length spacers, we synthesized two "two-prong" ligands, L1 and L2, in which the distances between Cu(2+) and NH(2) group of sulfonamide were 29 and 22 A, respectively. We compared the binding affinities of L1 and L2, vis-a-vis their parent compound, benzenesulfonamide, for recombinant human carbonic anhydrase I (hCA-I) by performing the fluorescence titration and steady-state kinetic experiments. The experimental data revealed that whereas the binding affinity of L1 for hCA-I was similar to that of benzenesulfonamide, the binding affinity of L2 was approximately 2 orders of magnitude higher, making L2 one of the most potent ligands or inhibitors of hCA-I. Since the enhanced binding or inhibitory potency of L2 is diminished (to the level of benzenesulfonamide) either in the presence of EDTA or upon treatment of the enzyme with diethyl pyrocarbonate, it is proposed that Cu(2+) of L2 interacts with one of the surface-exposed histidine residues of the enzyme. A cumulative account of the experimental data leads to the suggestion that the differential binding of L1 versus L2 to hCA-I is encoded in the chain length of the spacer moiety.
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Affiliation(s)
- Abir L Banerjee
- Department of Chemistry, Biochemistry and Molecular Biology, North Dakota State University, Fargo, North Dakota 58105, USA
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