Electron flow shift inClostridium acetobutylicum fermentation by electrochemically introduced reducing equivalent

1988 ◽  
Vol 10 (2) ◽  
pp. 123-128 ◽  
Author(s):  
Tae Sung Kim ◽  
Byung Hong Kim
Keyword(s):  
Electron Flow ◽  
Reducing Equivalent

Effects of DDT on photosynthetic electron flow in Secale species

1985 ◽  
Vol 23 (12) ◽  
pp. 2785-2789
Author(s):  
S Akbar
Keyword(s):  
Electron Flow ◽  
Photosynthetic Electron Flow

Bio-Inspired Submicron Electrodes

2003 ◽  
Vol 775 ◽  
Author(s):  
Ivan Stanish ◽  
Daniel A. Lowy ◽  
Alok Singh
Keyword(s):  
Electrode Surface ◽  
Structural Integrity ◽  
Electron Flow ◽  
Charge Storage ◽  
Electroactive Material ◽  
Electron Coupling ◽  
Strong Potential ◽  
Electrical Potentials ◽  
Submicron Scale ◽  
Potential Gradients

AbstractImmobilized polymerized electroactive vesicles (IPEVs) are submicron biocapsules capable of storing charge in confined environments and chemisorbing on surfaces. Methods to immobilize stable submicron sized electroactive vesicles and the means to measure electroactivity of IPEVs at nanolevels have been demonstrated. IPEVs can withstand steep potential gradients applied across their membrane, maintain their structural integrity against surfaces poised at high/low electrical potentials, retain electroactive material over several days, and reversibly mediate (within the membrane) electron flow between the electrode surface and vesicle interior. IPEVs have strong potential to be used for charge storage and electron coupling applications that operate on the submicron scale and smaller.

Physiological Role of Cyclic Electron Flow in Higher Plants

2012 ◽  
Vol 30 (1) ◽  
pp. 100
Author(s):  
Wei HUANG ◽  
Shi-Bao ZHANG ◽  
Kun-Fang CAO
Keyword(s):  
Higher Plants ◽  
Electron Flow ◽  
Physiological Role ◽  
Cyclic Electron Flow

scholarly journals Boundary conditions of viscous electron flow

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Egor I. Kiselev ◽  
Jörg Schmalian
Keyword(s):  
Boundary Conditions ◽  
Electron Flow

Reducing-equivalent transfer to the mitochondria during gluconeogenesis and ureogenesis in hepatocytes from rats of different thyroid status

1992 ◽  
Vol 1137 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Roland B. Gregory ◽  
John W. Phillips ◽  
Michael N. Berry
Keyword(s):  
Thyroid Status ◽  
Reducing Equivalent

scholarly journals Transcription Profile Analysis of Chlorophyll Biosynthesis in Leaves of Wild-Type and Chlorophyll b-Deficient Rice (Oryza sativa L.)

Agriculture ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 401
Author(s):  
Minh Khiem Nguyen ◽  
Tin-Han Shih ◽  
Szu-Hsien Lin ◽  
Jun-Wei Lin ◽  
Hoang Chinh Nguyen ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Core Protein ◽  
Profile Analysis ◽  
Oryza Sativa L ◽  
Electron Flow ◽  
Chlorophyll Biosynthesis ◽  
Wild Type ◽  
Transcription Analysis ◽  
Chl A ◽  
Chl Biosynthesis

Photosynthesis is an essential biological process and a key approach for raising crop yield. However, photosynthesis in rice is not fully investigated. This study reported the photosynthetic properties and transcriptomic profiles of chlorophyll (Chl) b-deficient mutant (ch11) and wild-type rice (Oryza sativa L.). Chl b-deficient rice revealed irregular chloroplast development (indistinct membranes, loss of starch granules, thinner grana, and numerous plastoglobuli). Next-generation sequencing approach application revealed that the differential expressed genes were related to photosynthesis machinery, Chl-biosynthesis, and degradation pathway in ch11. Two genes encoding PsbR (PSII core protein), FtsZ1, and PetH genes, were found to be down-regulated. The expression of the FtsZ1 and PetH genes resulted in disrupted chloroplast cell division and electron flow, respectively, consequently reducing Chl accumulation and the photosynthetic capacity of Chl b-deficient rice. Furthermore, this study found the up-regulated expression of the GluRS gene, whereas the POR gene was down-regulated in the Chl biosynthesis and degradation pathways. The results obtained from RT-qPCR analyses were generally consistent with those of transcription analysis, with the exception of the finding that MgCH genes were up-regulated which enhance the important intermediate products in the Mg branch of Chl biosynthesis. These results indicate a reduction in the accumulation of both Chl a and Chl b. This study suggested that a decline in Chl accumulation is caused by irregular chloroplast formation and down-regulation of POR genes; and Chl b might be degraded via the pheophorbide b pathway, which requires further elucidation.

Reduction of NAD+ by the reversed respiratory electron flow in Azotobacter vinelandii

1987 ◽  
Vol 892 (2) ◽  
pp. 213-223 ◽  
Author(s):  
K.-P. Häger ◽  
H. Bothe
Keyword(s):  
Azotobacter Vinelandii ◽  
Electron Flow

scholarly journals Over-expression of an electron transport protein OmcS provides sufficient NADH for d-lactate production in cyanobacterium

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Hengkai Meng ◽  
Wei Zhang ◽  
Huawei Zhu ◽  
Fan Yang ◽  
Yanping Zhang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Electron Transport ◽  
Lactate Production ◽  
Transport Protein ◽  
Dominant Form ◽  
Photosynthetic Production ◽  
Reducing Equivalent ◽  
Excess Electrons ◽  
Novel Strategy ◽  
Electron Transport Protein

Abstract Background An efficient supply of reducing equivalent is essential for chemicals production by engineered microbes. In phototrophic microbes, the NADPH generated from photosynthesis is the dominant form of reducing equivalent. However, most dehydrogenases prefer to utilize NADH as a cofactor. Thus, sufficient NADH supply is crucial to produce dehydrogenase-derived chemicals in cyanobacteria. Photosynthetic electron is the sole energy source and excess electrons are wasted in the light reactions of photosynthesis. Results Here we propose a novel strategy to direct the electrons to generate more ATP from light reactions to provide sufficient NADH for lactate production. To this end, we introduced an electron transport protein-encoding gene omcS into cyanobacterium Synechococcus elongatus UTEX 2973 and demonstrated that the introduced OmcS directs excess electrons from plastoquinone (PQ) to photosystem I (PSI) to stimulate cyclic electron transfer (CET). As a result, an approximately 30% increased intracellular ATP, 60% increased intracellular NADH concentrations and up to 60% increased biomass production with fourfold increased d-lactate production were achieved. Comparative transcriptome analysis showed upregulation of proteins involved in linear electron transfer (LET), CET, and downregulation of proteins involved in respiratory electron transfer (RET), giving hints to understand the increased levels of ATP and NADH. Conclusions This strategy provides a novel orthologous way to improve photosynthesis via enhancing CET and supply sufficient NADH for the photosynthetic production of chemicals.

scholarly journals 5-Methylphenazinium methylsulfate mediates cyclic electron flow and proton gradient dissipation in chromaffin-vesicle membranes.

1990 ◽  
Vol 265 (30) ◽  
pp. 18135-18141
Author(s):  
G J Harnadek ◽  
E A Ries ◽  
A Farhat ◽  
D Njus
Keyword(s):  
Electron Flow ◽  
Cyclic Electron Flow ◽  
Proton Gradient ◽  
Vesicle Membranes

Dependence of the Efficiency Electron Beam Assisted Synthesis of YAG:Ce Ceramics on the Power Density of the Electron Flow

2020 ◽  
Author(s):  
Zhakyp Karipbaeyev ◽  
Elena Polisadova ◽  
Aleksandr Ermolaev ◽  
Viktor Lisitsyn ◽  
Gulnur Alpyssova ◽  
...  
Keyword(s):  
Electron Beam ◽  
Power Density ◽  
Electron Flow
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