A Review on Bacteriorhodopsin-Based Bioelectronic Devices

Li, Yutao; Tian, Ye; Tian, He; Tu, Tao; Gou, Guangyang; Wang, Qian; Qiao, Yancong; Yang, Yi; Ren, Tian‐Ling

doi:10.3390/s18051368

Cited by 57 publications

(48 citation statements)

References 100 publications

(132 reference statements)

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“…As one further varies secondary force, flux and efficiency fall to zero and entropy production falls to a finite, almost constant, low value. When oriented bacteriorhodopsins are incorporated in robust bioelectronic devices, a high efficiency can be reached [ 49 ], with an additional bonus of smaller entropy production, that is, considerably less heating with a very small decrease in produced proton current. Another bR-based bioelectronic application is in the field of volumetric optical memory [ 50 ].…”

Section: Light-activated Creation Of the Protonmotive Force Dissimentioning

confidence: 99%

Maximum Entropy Production Theorem for Transitions between Enzyme Functional States and Its Applications

Juretić

Simunić

Lošić

2019

Entropy

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Transitions between enzyme functional states are often connected to conformational changes involving electron or proton transport and directional movements of a group of atoms. These microscopic fluxes, resulting in entropy production, are driven by non-equilibrium concentrations of substrates and products. Maximal entropy production exists for any chosen transition, but such a maximal transitional entropy production (MTEP) requirement does not ensure an increase of total entropy production, nor an increase in catalytic performance. We examine when total entropy production increases, together with an increase in the performance of an enzyme or bioenergetic system. The applications of the MTEP theorem for transitions between functional states are described for the triosephosphate isomerase, ATP synthase, for β-lactamases, and for the photochemical cycle of bacteriorhodopsin. The rate-limiting steps can be easily identified as those which are the most efficient in dissipating free-energy gradients and in performing catalysis. The last step in the catalytic cycle is usually associated with the highest free-energy dissipation involving proton nanocurents. This recovery rate-limiting step can be optimized for higher efficiency by using corresponding MTEP requirements. We conclude that biological evolution, leading to increased optimal catalytic efficiency, also accelerated the thermodynamic evolution, the synergistic relationship we named the evolution-coupling hypothesis.

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Section: Light-activated Creation Of the Protonmotive Force Dissimentioning

confidence: 99%

Maximum Entropy Production Theorem for Transitions between Enzyme Functional States and Its Applications

Juretić

Simunić

Lošić

2019

Entropy

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“…bR is an integral membrane protein in the 2D crystalline patches (termed as purple membrane, PM), which endows it with excellent stability against chemical, light, and thermal degradations . These properties make bR a promising biomaterial for bioelectronic, optoelectronic, and nonlinear optical applications . For bR‐based photoelectric devices, both blue and green lights are indispensable to produce stationary photocurrent .…”

Section: Methodsmentioning

confidence: 99%

“…Up‐conversion nanoparticles with blue and green emissions, quantum dots that emitted 530 nm fluorescence under the illumination of 410 nm, and the surface plasmon resonance of Au nanoparticle that could enhance the intensity of blue light have been incorporated into bR‐based photoelectric devices to induce stationary photocurrent . At present, in the bR‐based photoelectric devices, the way to initiate bR photocycle is to directly use two monochromatic light with high intensity or to use laser light source that excites the fluorescent materials to emit fluorescence, which are high‐energy and limited to the external instruments . Moreover, embedded and wearable bioelectronic devices are a developing direction in the future.…”

Section: Methodsmentioning

confidence: 99%

Bacteriorhodopsin‐Based Biophotovoltaic Devices Driven by Chemiluminescence as Endogenous Light Source

Zhou

Liu

et al. 2019

Advanced Optical Materials

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As a light‐driven proton pump, bacteriorhodopsin (bR) captures light and transports protons directionally. Here, a new bR‐based bioelectronic device that employs the chemiluminescence from luminol as an endogenous light source to generate steady current is designed. Purple membrane embedded with bR is modified on indium tin oxide (ITO) electrode followed by electrostatically binding of cationic oligo (p‐phenylene vinylene) derivative (OPV). The device is fabricated by coupling bR/OPV electrode and bare ITO electrode. As a suitable luminescence acceptor of luminol, OPV emits green light through chemiluminescence resonance energy transfer (CRET), which is capable of exciting ground state bR (bR570) nearby to initiate photocycle. Simultaneously, luminol emits blue chemiluminescent light which can be absorbed by M410 intermediate in photocycle, accelerating its reconversion to bR570 by shortcuts. As a result, the photocycle is accelerated and stabilized to generate a stable photocurrent. Furthermore, this study achieves to use oxygen and glucose as the initial source of hydrogen peroxide and produce stable photocurrent by taking advantage of the cascade reaction of glucose oxidase and horseradish peroxide. This provides a proof‐of‐concept for successfully using the CRET system as endogenous light source and provides new ideas for energy utilization and conversion taking advantage of natural bR‐based photosynthetic systems.

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“…Photon absorption triggers the isomerization of all-trans-retinal (peak absorption at 570 nm) to the 13-cis form, inducing the conformational changes of the polypeptide chain and the transport of a proton. The photocycle of bacteriorhodopsin occurs through a series of spectrally different intermediates (Li et al, 2018b). The energy transfer from QD donor significantly increases the rate of light-driven proton-pumping by bacteriorhodopsin.…”

Section: Quantum Dots and Fluorescent Proteins Conjugates As Sensors mentioning

confidence: 99%

Nanoparticles as energy donors and acceptors in bionanohybrid systems

Sławski

Grzyb

2019

Acta Biochim Pol

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The bionanohybrids are the junctions of at least two objects of different origin: abiotic and biotic. The abiotic part is a nanoparticle (often a fluorescent quantum dot), the biotical one may be a protein (especially fluorescent one or redox-active one), nucleic acid, carbohydrate as well as a simple organic molecule. When such a junction undergoes illumination, the energy transfer between the partners is possible. The nanoparticles, depending on their characteristics, may be donors, acceptors or mediators of the energy transfer. In most cases, the mechanism of the transfer is the Förster resonance energy transfer (FRET) or the electron transfer (ET). Here, we reviewed the newest achievements in the field with special attention paid to those bionanohybrids which allow FRET or ET. Such nanohybrids are important not only for exploration of the mechanism of the partner interaction but mainly for working out nanobiodevices for biosensing and nanotools for modern therapies.

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A Review on Bacteriorhodopsin-Based Bioelectronic Devices

Cited by 57 publications

References 100 publications

Maximum Entropy Production Theorem for Transitions between Enzyme Functional States and Its Applications

Maximum Entropy Production Theorem for Transitions between Enzyme Functional States and Its Applications

Bacteriorhodopsin‐Based Biophotovoltaic Devices Driven by Chemiluminescence as Endogenous Light Source

Nanoparticles as energy donors and acceptors in bionanohybrid systems

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