1
|
Abstract
Regulatory processes in biology can be re-conceptualized in terms of logic gates, analogous to those in computer science. Frequently, biological systems need to respond to multiple, sometimes conflicting, inputs to provide the correct output. The language of logic gates can then be used to model complex signal transduction and metabolic processes. Advances in synthetic biology in turn can be used to construct new logic gates, which find a variety of biotechnology applications including in the production of high value chemicals, biosensing, and drug delivery. In this review, we focus on advances in the construction of logic gates that take advantage of biological catalysts, including both protein-based and nucleic acid-based enzymes. These catalyst-based biomolecular logic gates can read a variety of molecular inputs and provide chemical, optical, and electrical outputs, allowing them to interface with other types of biomolecular logic gates or even extend to inorganic systems. Continued advances in molecular modeling and engineering will facilitate the construction of new logic gates, further expanding the utility of biomolecular computing.
Collapse
|
2
|
Enhancement of Biosensors by Implementing Photoelectrochemical Processes. SENSORS 2020; 20:s20113281. [PMID: 32526947 PMCID: PMC7308923 DOI: 10.3390/s20113281] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 12/15/2022]
Abstract
Research on biosensors is growing in relevance, taking benefit from groundbreaking knowledge that allows for new biosensing strategies. Electrochemical biosensors can benefit from research on semiconducting materials for energy applications. This research seeks the optimization of the semiconductor-electrode interfaces including light-harvesting materials, among other improvements. Once that knowledge is acquired, it can be implemented with biological recognition elements, which are able to transfer a chemical signal to the photoelectrochemical system, yielding photo-biosensors. This has been a matter of research as it allows both a superior suppression of background electrochemical signals and the switching ON and OFF upon illumination. Effective electrode-semiconductor interfaces and their coupling with biorecognition units are reviewed in this work.
Collapse
|
3
|
Agrawal DK, Dolan EM, Hernandez NE, Blacklock KM, Khare SD, Sontag ED. Mathematical Models of Protease-Based Enzymatic Biosensors. ACS Synth Biol 2020; 9:198-208. [PMID: 32017536 DOI: 10.1021/acssynbio.9b00279] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An important goal of synthetic biology is to build biosensors and circuits with well-defined input-output relationships that operate at speeds found in natural biological systems. However, for molecular computation, most commonly used genetic circuit elements typically involve several steps from input detection to output signal production: transcription, translation, and post-translational modifications. These multiple steps together require up to several hours to respond to a single stimulus, and this limits the overall speed and complexity of genetic circuits. To address this gap, molecular frameworks that rely exclusively on post-translational steps to realize reaction networks that can process inputs at a time scale of seconds to minutes have been proposed. Here, we build mathematical models of fast biosensors capable of producing Boolean logic functionality. We employ protease-based chemical and light-induced switches, investigate their operation, and provide selection guidelines for their use as on-off switches. As a proof of concept, we implement a rapamycin-induced switch in vitro and demonstrate that its response qualitatively agrees with the predictions from our models. We then use these switches as elementary blocks, developing models for biosensors that can perform OR and XOR Boolean logic computation while using reaction conditions as tuning parameters. We use sensitivity analysis to determine the time-dependent sensitivity of the output to proteolytic and protein-protein binding reaction parameters. These fast protease-based biosensors can be used to implement complex molecular circuits with a capability of processing multiple inputs controllably and algorithmically. Our framework for evaluating and optimizing circuit performance can be applied to other molecular logic circuits.
Collapse
Affiliation(s)
- Deepak K. Agrawal
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02120, United States
- Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Elliott M. Dolan
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
| | - Nancy E. Hernandez
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
| | - Kristin M. Blacklock
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
| | - Sagar D. Khare
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
| | - Eduardo D. Sontag
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02120, United States
- Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, United States
- Laboratory of Systems Pharmacology, Program in Therapeutic Science, Harvard Medical School, Boston, Massachusetts 02115, United States
| |
Collapse
|
4
|
Manicka S, Levin M. Modeling somatic computation with non-neural bioelectric networks. Sci Rep 2019; 9:18612. [PMID: 31819119 PMCID: PMC6901451 DOI: 10.1038/s41598-019-54859-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 11/13/2019] [Indexed: 02/08/2023] Open
Abstract
The field of basal cognition seeks to understand how adaptive, context-specific behavior occurs in non-neural biological systems. Embryogenesis and regeneration require plasticity in many tissue types to achieve structural and functional goals in diverse circumstances. Thus, advances in both evolutionary cell biology and regenerative medicine require an understanding of how non-neural tissues could process information. Neurons evolved from ancient cell types that used bioelectric signaling to perform computation. However, it has not been shown whether or how non-neural bioelectric cell networks can support computation. We generalize connectionist methods to non-neural tissue architectures, showing that a minimal non-neural Bio-Electric Network (BEN) model that utilizes the general principles of bioelectricity (electrodiffusion and gating) can compute. We characterize BEN behaviors ranging from elementary logic gates to pattern detectors, using both fixed and transient inputs to recapitulate various biological scenarios. We characterize the mechanisms of such networks using dynamical-systems and information-theory tools, demonstrating that logic can manifest in bidirectional, continuous, and relatively slow bioelectrical systems, complementing conventional neural-centric architectures. Our results reveal a variety of non-neural decision-making processes as manifestations of general cellular biophysical mechanisms and suggest novel bioengineering approaches to construct functional tissues for regenerative medicine and synthetic biology as well as new machine learning architectures.
Collapse
Affiliation(s)
- Santosh Manicka
- Allen Discovery Center, 200 College Ave., Tufts University, Medford, MA, 02155, USA
| | - Michael Levin
- Allen Discovery Center, 200 College Ave., Tufts University, Medford, MA, 02155, USA.
| |
Collapse
|
5
|
Filipov Y, Gamella M, Katz E. Nano-species Release System Activated by Enzyme-based XOR Logic Gate. ELECTROANAL 2017. [DOI: 10.1002/elan.201700742] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yaroslav Filipov
- Department of Chemistry and Biomolecular Science
- Department of Physics; Clarkson University; Potsdam, NY 13699 USA
| | | | - Evgeny Katz
- Department of Chemistry and Biomolecular Science
| |
Collapse
|
6
|
Filipov Y, Domanskyi S, Wood ML, Gamella M, Privman V, Katz E. Experimental Realization of a High-Quality Biochemical XOR Gate. Chemphyschem 2017; 18:2908-2915. [PMID: 28745425 DOI: 10.1002/cphc.201700705] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/22/2017] [Indexed: 11/09/2022]
Abstract
We report an experimental realization of a biochemical XOR gate function that avoids many of the pitfalls of earlier realizations based on biocatalytic cascades. Inputs-represented by pairs of chemicals-cross-react to largely cancel out when both are nearly equal. The cross-reaction can be designed to also optimize gate functioning for noise handling. When not equal, the residual inputs are further processed to result in the output of the XOR type, by biocatalytic steps that allow for further gate-function optimization. The quality of the realized XOR gate is theoretically analyzed.
Collapse
Affiliation(s)
- Yaroslav Filipov
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699, USA.,Department of Physics, Clarkson University, Potsdam, NY, 13699, USA
| | - Sergii Domanskyi
- Department of Physics, Clarkson University, Potsdam, NY, 13699, USA
| | - Mackenna L Wood
- Department of Physics, Clarkson University, Potsdam, NY, 13699, USA
| | - Maria Gamella
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699, USA
| | - Vladimir Privman
- Department of Physics, Clarkson University, Potsdam, NY, 13699, USA
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699, USA
| |
Collapse
|
7
|
Agudelo J, Privman V, Halámek J. Promises and Challenges in Continuous Tracking Utilizing Amino Acids in Skin Secretions for Active Multi-Factor Biometric Authentication for Cybersecurity. Chemphyschem 2017; 18:1714-1720. [DOI: 10.1002/cphc.201700044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Indexed: 02/04/2023]
Affiliation(s)
- Juliana Agudelo
- Department of Chemistry, University at Albany; State University of New York; Albany NY 12222 USA
| | - Vladimir Privman
- Department of Physics; Clarkson University; Potsdam NY 13699 USA
| | - Jan Halámek
- Department of Chemistry, University at Albany; State University of New York; Albany NY 12222 USA
| |
Collapse
|
8
|
Enzyme‐Based Logic Gates and Networks with Output Signals Analyzed by Various Methods. Chemphyschem 2017; 18:1688-1713. [DOI: 10.1002/cphc.201601402] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Indexed: 01/16/2023]
|
9
|
Wood ML, Domanskyi S, Privman V. Design of High Quality Chemical XOR Gates with Noise Reduction. Chemphyschem 2017; 18:1773-1781. [DOI: 10.1002/cphc.201700018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Mackenna L. Wood
- Department of Physics; Clarkson University; Potsdam NY 13676 USA
| | - Sergii Domanskyi
- Department of Physics; Clarkson University; Potsdam NY 13676 USA
| | - Vladimir Privman
- Department of Physics; Clarkson University; Potsdam NY 13676 USA
| |
Collapse
|
10
|
Baroncini M, Semeraro M, Credi A. Unconventional Nonlinear Input-Output Response in a Luminescent Molecular Switch by Inner Filtering Effects. Chemphyschem 2017; 18:1755-1759. [DOI: 10.1002/cphc.201700046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Massimo Baroncini
- Dipartimento di Scienze e Tecnologie Agro-alimentari; Alma Mater Studiorum; Università di Bologna; Viale Fanin 50 40127 Bologna Italy
| | - Monica Semeraro
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum; Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Alberto Credi
- Dipartimento di Scienze e Tecnologie Agro-alimentari; Alma Mater Studiorum; Università di Bologna; Viale Fanin 50 40127 Bologna Italy
- Istituto ISOF-CNR; Via Gobetti 101 40129 Bologna Italy
| |
Collapse
|
11
|
Domanskyi S, Privman V. Modeling and Modifying Response of Biochemical Processes for Biocomputing and Biosensing Signal Processing. EMERGENCE, COMPLEXITY AND COMPUTATION 2017. [DOI: 10.1007/978-3-319-33921-4_3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
12
|
Katz E, Minko S. Enzyme-based logic systems interfaced with signal-responsive materials and electrodes. Chem Commun (Camb) 2015; 51:3493-500. [PMID: 25578785 DOI: 10.1039/c4cc09851j] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Enzyme-based biocomputing systems were interfaced with signal-responsive membranes and electrodes resulting in bioelectronic devices switchable by logically processed biomolecular signals. "Smart" membranes, electrodes, biofuel cells, memristors and substance-releasing systems were activated by various combinations of biomolecular signals in the pre-programmed way implemented in biocatalytic cascades mimicking logic networks.
Collapse
Affiliation(s)
- Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA.
| | | |
Collapse
|
13
|
Biocomputing — tools, aims, perspectives. Curr Opin Biotechnol 2015; 34:202-8. [DOI: 10.1016/j.copbio.2015.02.011] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 02/13/2015] [Accepted: 02/18/2015] [Indexed: 12/20/2022]
|
14
|
Moseley F, Halámek J, Kramer F, Poghossian A, Schöning MJ, Katz E. An enzyme-based reversible CNOT logic gate realized in a flow system. Analyst 2015; 139:1839-42. [PMID: 24603754 DOI: 10.1039/c4an00133h] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enzyme system organized in a flow device was used to mimic a reversible Controlled NOT (CNOT) gate with two input and two output signals. Reversible conversion of NAD(+) and NADH cofactors was used to perform a XOR logic operation, while biocatalytic hydrolysis of p-nitrophenyl phosphate resulted in an Identity operation working in parallel. The first biomolecular realization of a CNOT gate is promising for integration into complex biomolecular networks and future biosensor/biomedical applications.
Collapse
Affiliation(s)
- Fiona Moseley
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13676, USA.
| | | | | | | | | | | |
Collapse
|
15
|
Mailloux S, Gerasimova YV, Guz N, Kolpashchikov DM, Katz E. Bridging the Two Worlds: A Universal Interface between Enzymatic and DNA Computing Systems. Angew Chem Int Ed Engl 2015; 54:6562-6. [PMID: 25864379 PMCID: PMC4495919 DOI: 10.1002/anie.201411148] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 02/06/2015] [Indexed: 11/09/2022]
Abstract
Molecular computing based on enzymes or nucleic acids has attracted a great deal of attention due to the perspectives of controlling living systems in the way we control electronic computers. Enzyme-based computational systems can respond to a great variety of small molecule inputs. They have the advantage of signal amplification and highly specific recognition. DNA computing systems are most often controlled by oligonucleotide inputs/outputs and are capable of sophisticated computing as well as controlling gene expressions. Here, we developed an interface that enables communication of otherwise incompatible nucleic-acid and enzyme-computational systems. The enzymatic system processes small molecules as inputs and produces NADH as an output. The NADH output triggers electrochemical release of an oligonucleotide, which is accepted by a DNA computational system as an input. This interface is universal because the enzymatic and DNA computing systems are independent of each other in composition and complexity.
Collapse
Affiliation(s)
- Shay Mailloux
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810 (USA)
| | - Yulia V Gerasimova
- Chemistry Department, University of Central Florida, 4000 Central Florida Boulevard, Orlando, FL 32816-2366 (USA)
| | - Nataliia Guz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810 (USA)
| | - Dmitry M Kolpashchikov
- Chemistry Department, University of Central Florida, 4000 Central Florida Boulevard, Orlando, FL 32816-2366 (USA).
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810 (USA).
| |
Collapse
|
16
|
Mailloux S, Gerasimova YV, Guz N, Kolpashchikov DM, Katz E. Bridging the Two Worlds: A Universal Interface between Enzymatic and DNA Computing Systems. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411148] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
17
|
Fratto BE, Katz E. Reversible Logic Gates Based on Enzyme-Biocatalyzed Reactions and Realized in Flow Cells: A Modular Approach. Chemphyschem 2015; 16:1405-15. [DOI: 10.1002/cphc.201500042] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Indexed: 01/06/2023]
|
18
|
Privman V, Domanskyi S, Mailloux S, Holade Y, Katz E. Kinetic Model for a Threshold Filter in an Enzymatic System for Bioanalytical and Biocomputing Applications. J Phys Chem B 2014; 118:12435-43. [DOI: 10.1021/jp508224y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
| | | | | | - Yaovi Holade
- Université de Poitiers, IC2MP, UMR-CNRS 7285, 4 rue Michel Brunet, B27 TSA 51106, 86073 Poitiers Cedex 9, France
| | | |
Collapse
|
19
|
Mailloux S, Guz N, Zakharchenko A, Minko S, Katz E. Majority and minority gates realized in enzyme-biocatalyzed systems integrated with logic networks and interfaced with bioelectronic systems. J Phys Chem B 2014; 118:6775-84. [PMID: 24873717 DOI: 10.1021/jp504057u] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Biocatalytic reactions operating in parallel and resulting in reduction of NAD(+) or oxidation of NADH were used to mimic 3-input majority and minority logic gates, respectively. The substrates corresponding to the enzyme reactions were used as the input signals. When the input signals were applied at their high concentrations, defined as logic 1 input values, the corresponding biocatalytic reactions were activated, resulting in changes of the NADH concentration defined as the output signal. The NADH concentration changes were dependent on the number of parallel reactions activated by the input signals. The absence of the substrates, meaning their logic 0 input values, kept the reactions mute with no changes in the NADH concentration. In the system mimicking the majority function, the enzyme-biocatalyzed reactions resulted in a higher production of NADH when more than one input signal was applied at the logic 1 value. Another system mimicking the minority function consumed more NADH, thus leaving a smaller residual output signal, when more than one input signal was applied at the logic 1 value. The performance of the majority gate was improved by processing the output signal through a filter system in which another biocatalytic reaction consumed a fraction of the output signal, thus reducing its physical value to zero when the logic 0 value was obtained. The majority gate was integrated with a preceding AND logic gate to illustrate the possibility of complex networks. The output signal, NADH, was also used to activate a process mimicking drug release, thus illustrating the use of the majority gate in decision-making biomedical systems. The 3-input majority gate was also used as a switchable AND/OR gate when one of the input signals was reserved as a command signal, switching the logic operation for processing of the other two inputs. Overall, the designed majority and minority logic gates demonstrate novel functions of biomolecular information processing systems.
Collapse
Affiliation(s)
- Shay Mailloux
- Department of Chemistry and Biomolecular Science, Clarkson University , Potsdam, New York 13699-5810, United States
| | | | | | | | | |
Collapse
|
20
|
Huang WT, Luo HQ, Li NB. Boolean Logic Tree of Graphene-Based Chemical System for Molecular Computation and Intelligent Molecular Search Query. Anal Chem 2014; 86:4494-500. [DOI: 10.1021/ac5004008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Wei Tao Huang
- Key Laboratory of Eco-environments
in Three Gorges Reservoir Region (Ministry of Education), School of
Chemistry and Chemical Engineering, Southwest University, Tiansheng
Road, BeiBei District, Chongqing 400715, PR China
| | - Hong Qun Luo
- Key Laboratory of Eco-environments
in Three Gorges Reservoir Region (Ministry of Education), School of
Chemistry and Chemical Engineering, Southwest University, Tiansheng
Road, BeiBei District, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Eco-environments
in Three Gorges Reservoir Region (Ministry of Education), School of
Chemistry and Chemical Engineering, Southwest University, Tiansheng
Road, BeiBei District, Chongqing 400715, PR China
| |
Collapse
|
21
|
Gdor E, Katz E, Mandler D. Biomolecular AND Logic Gate Based on Immobilized Enzymes with Precise Spatial Separation Controlled by Scanning Electrochemical Microscopy. J Phys Chem B 2013; 117:16058-65. [DOI: 10.1021/jp4095672] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Efrat Gdor
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Evgeny Katz
- Department
of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, United States
| | - Daniel Mandler
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| |
Collapse
|
22
|
Privman V, Zavalov O, Halámková L, Moseley F, Halámek J, Katz E. Networked Enzymatic Logic Gates with Filtering: New Theoretical Modeling Expressions and Their Experimental Application. J Phys Chem B 2013; 117:14928-39. [DOI: 10.1021/jp408973g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
| | | | - Lenka Halámková
- Department
of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | | | - Jan Halámek
- Department
of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | | |
Collapse
|
23
|
Bakshi S, Zavalov O, Halámek J, Privman V, Katz E. Modularity of Biochemical Filtering for Inducing Sigmoid Response in Both Inputs in an Enzymatic AND Gate. J Phys Chem B 2013; 117:9857-65. [DOI: 10.1021/jp4058675] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Saira Bakshi
- Department
of Chemistry and Biomolecular Science and ‡Department of Physics, Clarkson University, Potsdam, New York
13676, United States
| | - Oleksandr Zavalov
- Department
of Chemistry and Biomolecular Science and ‡Department of Physics, Clarkson University, Potsdam, New York
13676, United States
| | - Jan Halámek
- Department
of Chemistry and Biomolecular Science and ‡Department of Physics, Clarkson University, Potsdam, New York
13676, United States
| | - Vladimir Privman
- Department
of Chemistry and Biomolecular Science and ‡Department of Physics, Clarkson University, Potsdam, New York
13676, United States
| | - Evgeny Katz
- Department
of Chemistry and Biomolecular Science and ‡Department of Physics, Clarkson University, Potsdam, New York
13676, United States
| |
Collapse
|
24
|
Moe-Behrens GH. The biological microprocessor, or how to build a computer with biological parts. Comput Struct Biotechnol J 2013; 7:e201304003. [PMID: 24688733 PMCID: PMC3962179 DOI: 10.5936/csbj.201304003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 06/17/2013] [Accepted: 06/20/2013] [Indexed: 01/21/2023] Open
Abstract
Systemics, a revolutionary paradigm shift in scientific thinking, with applications in systems biology, and synthetic biology, have led to the idea of using silicon computers and their engineering principles as a blueprint for the engineering of a similar machine made from biological parts. Here we describe these building blocks and how they can be assembled to a general purpose computer system, a biological microprocessor. Such a system consists of biological parts building an input / output device, an arithmetic logic unit, a control unit, memory, and wires (busses) to interconnect these components. A biocomputer can be used to monitor and control a biological system.
Collapse
|
25
|
Privman V, Fratto BE, Zavalov O, Halámek J, Katz E. Enzymatic AND logic gate with sigmoid response induced by photochemically controlled oxidation of the output. J Phys Chem B 2013; 117:7559-68. [PMID: 23731012 DOI: 10.1021/jp404054f] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We report a study of a system which involves an enzymatic cascade realizing an AND logic gate, with an added photochemical processing of the output, allowing the gate's response to be made sigmoid in both inputs. New functional forms are developed for quantifying the kinetics of such systems, specifically designed to model their response in terms of signal and information processing. These theoretical expressions are tested for the studied system, which also allows us to consider aspects of biochemical information processing such as noise transmission properties and control of timing of the chemical and physical steps.
Collapse
Affiliation(s)
- Vladimir Privman
- Department of Physics, Clarkson University, Potsdam, New York 13676, USA
| | | | | | | | | |
Collapse
|
26
|
Abstract
One fascinating recent avenue of study in the field of synthetic biology is the creation of biomolecule-based computers. The main components of a computing device consist of an arithmetic logic unit, the control unit, memory, and the input and output devices. Boolean logic gates are at the core of the operational machinery of these parts, and hence to make biocomputers a reality, biomolecular logic gates become a necessity. Indeed, with the advent of more sophisticated biological tools, both nucleic acid- and protein-based logic systems have been generated. These devices function in the context of either test tubes or living cells and yield highly specific outputs given a set of inputs. In this review, we discuss various types of biomolecular logic gates that have been synthesized, with particular emphasis on recent developments that promise increased complexity of logic gate circuitry, improved computational speed, and potential clinical applications.
Collapse
Affiliation(s)
- Takafumi Miyamoto
- Department of Cell Biology, Center for Cell Dynamics, Johns Hopkins University, Baltimore, MD, 21205
| | - Shiva Razavi
- Department of Cell Biology, Center for Cell Dynamics, Johns Hopkins University, Baltimore, MD, 21205
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, 21205
| | - Robert DeRose
- Department of Cell Biology, Center for Cell Dynamics, Johns Hopkins University, Baltimore, MD, 21205
| | - Takanari Inoue
- Department of Cell Biology, Center for Cell Dynamics, Johns Hopkins University, Baltimore, MD, 21205
- PRESTO Investigator, JST, 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
27
|
MacVittie K, Halámek J, Privman V, Katz E. A bioinspired associative memory system based on enzymatic cascades. Chem Commun (Camb) 2013; 49:6962-4. [DOI: 10.1039/c3cc43272f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
28
|
Electrode interfaces switchable by physical and chemical signals for biosensing, biofuel, and biocomputing applications. Anal Bioanal Chem 2012; 405:3659-72. [DOI: 10.1007/s00216-012-6525-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 10/23/2012] [Accepted: 10/24/2012] [Indexed: 01/26/2023]
|
29
|
Domanskyi S, Privman V. Design of Digital Response in Enzyme-Based Bioanalytical Systems for Information Processing Applications. J Phys Chem B 2012; 116:13690-5. [DOI: 10.1021/jp309001j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Sergii Domanskyi
- Department of Physics, Clarkson University, Potsdam, New York 13699, United
States
| | - Vladimir Privman
- Department of Physics, Clarkson University, Potsdam, New York 13699, United
States
| |
Collapse
|
30
|
Abstract
The enzyme system was used to mimic the D-flip-flop memory unit. The reversible conversion of NAD(+) and NADH cofactors was used to encode the states of the memory unit, while a mixture of inhibitors was used as the Clock input and the substrates were used as the Data input.
Collapse
Affiliation(s)
- Kevin MacVittie
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA
| | | | | |
Collapse
|
31
|
Biocatalytic Enzyme Networks Designed for Binary-Logic Control of Smart Electroactive Nanobiointerfaces. Top Catal 2012. [DOI: 10.1007/s11244-012-9894-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
32
|
Bocharova V, MacVittie K, Chinnapareddy S, Halámek J, Privman V, Katz E. Realization of Associative Memory in an Enzymatic Process: Toward Biomolecular Networks with Learning and Unlearning Functionalities. J Phys Chem Lett 2012; 3:1234-1237. [PMID: 26286763 DOI: 10.1021/jz300098b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report a realization of an associative memory signal/information processing system based on simple enzyme-catalyzed biochemical reactions. Optically detected chemical output is always obtained in response to the triggering input, but the system can also "learn" by association, to later respond to the second input if it is initially applied in combination with the triggering input as the "training" step. This second chemical input is not self-reinforcing in the present system, which therefore can later "unlearn" to react to the second input if it is applied several times on its own. Such processing steps realized with (bio)chemical kinetics promise applications of bioinspired/memory-involving components in "networked" (concatenated) biomolecular processes for multisignal sensing and complex information processing.
Collapse
Affiliation(s)
- Vera Bocharova
- §Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6197, United States
| | | | | | | | | | | |
Collapse
|
33
|
Halámek J, Zavalov O, Halámková L, Korkmaz S, Privman V, Katz E. Enzyme-Based Logic Analysis of Biomarkers at Physiological Concentrations: AND Gate with Double-Sigmoid “Filter” Response. J Phys Chem B 2012; 116:4457-64. [DOI: 10.1021/jp300447w] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jan Halámek
- Department
of Chemistry and Biomolecular Science,
- Department
of Physics, and
- Department
of Biology, Clarkson University, Potsdam, New York 13699, United States
| | - Oleksandr Zavalov
- Department
of Chemistry and Biomolecular Science,
- Department
of Physics, and
- Department
of Biology, Clarkson University, Potsdam, New York 13699, United States
| | - Lenka Halámková
- Department
of Chemistry and Biomolecular Science,
- Department
of Physics, and
- Department
of Biology, Clarkson University, Potsdam, New York 13699, United States
| | - Sevim Korkmaz
- Department
of Chemistry and Biomolecular Science,
- Department
of Physics, and
- Department
of Biology, Clarkson University, Potsdam, New York 13699, United States
| | - Vladimir Privman
- Department
of Chemistry and Biomolecular Science,
- Department
of Physics, and
- Department
of Biology, Clarkson University, Potsdam, New York 13699, United States
| | - Evgeny Katz
- Department
of Chemistry and Biomolecular Science,
- Department
of Physics, and
- Department
of Biology, Clarkson University, Potsdam, New York 13699, United States
| |
Collapse
|
34
|
Katz E, Bocharova V, Privman M. Electronic interfaces switchable by logically processed multiple biochemical and physiological signals. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30172e] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
35
|
Bocharova V, Katz E. Switchable electrode interfaces controlled by physical, chemical and biological signals. CHEM REC 2011; 12:114-30. [DOI: 10.1002/tcr.201100025] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Indexed: 11/10/2022]
|
36
|
Katz E. Processing electrochemical signals at both sides of interface: electronic vs. chemical signal processing. J Solid State Electrochem 2011. [DOI: 10.1007/s10008-011-1300-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
37
|
|
38
|
|
39
|
|
40
|
|
41
|
Pita M, Privman V, Arugula MA, Melnikov D, Bocharova V, Katz E. Towards biochemical filters with a sigmoidal response to pH changes: buffered biocatalytic signal transduction. Phys Chem Chem Phys 2011; 13:4507-13. [DOI: 10.1039/c0cp02524k] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
42
|
Privman V, Halámek J, Arugula MA, Melnikov D, Bocharova V, Katz E. Biochemical Filter with Sigmoidal Response: Increasing the Complexity of Biomolecular Logic. J Phys Chem B 2010; 114:14103-9. [DOI: 10.1021/jp108693m] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Vladimir Privman
- Department of Chemistry and Biomolecular Science, and Department of Physics, Clarkson University, Potsdam, New York 13699, United States
| | - Jan Halámek
- Department of Chemistry and Biomolecular Science, and Department of Physics, Clarkson University, Potsdam, New York 13699, United States
| | - Mary A. Arugula
- Department of Chemistry and Biomolecular Science, and Department of Physics, Clarkson University, Potsdam, New York 13699, United States
| | - Dmitriy Melnikov
- Department of Chemistry and Biomolecular Science, and Department of Physics, Clarkson University, Potsdam, New York 13699, United States
| | - Vera Bocharova
- Department of Chemistry and Biomolecular Science, and Department of Physics, Clarkson University, Potsdam, New York 13699, United States
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, and Department of Physics, Clarkson University, Potsdam, New York 13699, United States
| |
Collapse
|
43
|
Privman V, Zhou J, Halámek J, Katz E. Realization and Properties of Biochemical-Computing Biocatalytic XOR Gate Based on Signal Change. J Phys Chem B 2010; 114:13601-8. [DOI: 10.1021/jp107562p] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vladimir Privman
- Department of Chemistry and Biomolecular Science and Department of Physics, Clarkson University, Potsdam, New York 13676, United States
| | - Jian Zhou
- Department of Chemistry and Biomolecular Science and Department of Physics, Clarkson University, Potsdam, New York 13676, United States
| | - Jan Halámek
- Department of Chemistry and Biomolecular Science and Department of Physics, Clarkson University, Potsdam, New York 13676, United States
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science and Department of Physics, Clarkson University, Potsdam, New York 13676, United States
| |
Collapse
|
44
|
Melnikov D, Strack G, Zhou J, Windmiller JR, Halámek J, Bocharova V, Chuang MC, Santhosh P, Privman V, Wang J, Katz E. Enzymatic AND Logic Gates Operated Under Conditions Characteristic of Biomedical Applications. J Phys Chem B 2010; 114:12166-74. [DOI: 10.1021/jp105912e] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dmitriy Melnikov
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Guinevere Strack
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Jian Zhou
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Joshua Ray Windmiller
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Jan Halámek
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Vera Bocharova
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Min-Chieh Chuang
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Padmanabhan Santhosh
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Vladimir Privman
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Joseph Wang
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| | - Evgeny Katz
- Department of Physics, Clarkson University, Potsdam, New York 13676, Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13676, and Department of NanoEngineering, University of California−San Diego, La Jolla, California 92093
| |
Collapse
|
45
|
Halámek J, Windmiller JR, Zhou J, Chuang MC, Santhosh P, Strack G, Arugula MA, Chinnapareddy S, Bocharova V, Wang J, Katz E. Multiplexing of injury codes for the parallel operation of enzyme logic gates. Analyst 2010; 135:2249-59. [PMID: 20617272 DOI: 10.1039/c0an00270d] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of a highly parallel enzyme logic sensing concept employing a novel encoding scheme for the determination of multiple pathophysiological conditions is reported. The new concept multiplexes a contingent of enzyme-based logic gates to yield a distinct 'injury code' corresponding to a unique pathophysiological state as prescribed by a truth table. The new concept is illustrated using an array of NAND and AND gates to assess the biomedical significance of numerous biomarker inputs including creatine kinase, lactate dehydrogenase, norepinephrine, glutamate, alanine transaminase, lactate, glucose, glutathione disulfide, and glutathione reductase to assess soft-tissue injury, traumatic brain injury, liver injury, abdominal trauma, hemorrhagic shock, and oxidative stress. Under the optimal conditions, physiological and pathological levels of these biomarkers were detected through either optical or electrochemical techniques by monitoring the level of the outputs generated by each of the six logic gates. By establishing a pathologically meaningful threshold for each logic gate, the absorbance and amperometric assays tendered the diagnosis in a digitally encoded 6-bit word, defined as an 'injury code'. This binary 'injury code' enabled the effective discrimination of 64 unique pathological conditions to offer a comprehensive high-fidelity diagnosis of multiple injury conditions. Such processing of relevant biomarker inputs and the subsequent multiplexing of the logic gate outputs to yield a comprehensive 'injury code' offer significant potential for the rapid and reliable assessment of varied and complex forms of injury in circumstances where access to a clinical laboratory is not viable. While the new concept of parallel and multiplexed enzyme logic gates is illustrated here in connection to multi-injury diagnosis, it could be readily extended to a wide range of practical medical, industrial, security and environmental applications.
Collapse
Affiliation(s)
- Jan Halámek
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY 13699-5810, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Arugula MA, Bocharova V, Halámek J, Pita M, Katz E. Enzyme-based multiplexer and demultiplexer. J Phys Chem B 2010; 114:5222-6. [PMID: 20350002 DOI: 10.1021/jp101101b] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A digital 2-to-1 multiplexer and a 1-to-2 demultiplexer were mimicked by biocatalytic reactions involving concerted operation of several enzymes. Using glucose oxidase (GOx) and laccase (Lac) as the data input signals and variable pH as the addressing signal, ferrocyanide oxidation in the output channel was selectively activated by one from two inputs, thus mimicking the multiplexer operation. A demultiplexer based on the enzyme system composed of GOx, glucose dehydrogenase (GDH) and horseradish peroxidase (HRP) allowed selective activation of different output channels (oxidation of ferrocyanide or reduction of NAD(+)) by the glucose input. The selection of the output channel was controlled by the addressing input of NAD(+). The designed systems represent important novel components of future branched enzyme networks processing biochemical signals for biosensing and bioactuating.
Collapse
Affiliation(s)
- Mary A Arugula
- Department of Chemistry and Biomolecular Science, and NanoBio Laboratory, Clarkson University, Potsdam New York 13699-5810, USA
| | | | | | | | | |
Collapse
|
47
|
Wang YJ, Xin BJ, Duan XR, Xing GW, Wang S. Assembly of Anionic Conjugated Polymer with 6-O-Modified PNP-β-Galactoside for Fluorescence Logic-signal-based Multiplex Detections of Enzymes. Macromol Rapid Commun 2010; 31:1473-8. [PMID: 21567554 DOI: 10.1002/marc.201000165] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Revised: 04/15/2010] [Indexed: 11/08/2022]
Abstract
Anionic conjugated polymer (PFP-SO 3-) was assembled with a novel enzymatic substrate 6-O-modified PNP-β-galactoside (1) for sensitive multiplex enzyme detections. The PFP-SO 3-/1/lipase/β-galactosidase system has two chemical input signals which are Input 1 (lipase) and Input 2 (β-galactosidase), and output optical signals such as fluorescence emission at 416 nm or 450 nm. Four types of logic gates, including YES, INH, NAND and AND, were successfully constructed and utilized for multiplex detections of lipase and β-galactosidase in one tube.
Collapse
Affiliation(s)
- Ya-Juan Wang
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China
| | | | | | | | | |
Collapse
|
48
|
Digital biosensors with built-in logic for biomedical applications—biosensors based on a biocomputing concept. Anal Bioanal Chem 2010; 398:1591-603. [DOI: 10.1007/s00216-010-3746-0] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Revised: 04/11/2010] [Accepted: 04/12/2010] [Indexed: 11/29/2022]
|
49
|
|
50
|
Halámek J, Kin Tam T, Strack G, Bocharova V, Pita M, Katz E. Self-powered biomolecular keypad lock security system based on a biofuel cell. Chem Commun (Camb) 2010; 46:2405-7. [DOI: 10.1039/b925484f] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|