Hydrogen in metabolism of purple bacteria and prospects of practical application

Цыганков, А. А.; Khusnutdinova, Anna N.

doi:10.1134/s0026261715010154

Cited by 19 publications

(6 citation statements)

References 132 publications

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“…Taking into account the fact that that this hydrogenase is stable and can work even at 70°C, one can conclude that it is a very promising enzyme for use in enzymatic hydrogenase electrodes. Several schemes of HydSL hydrogenase participation in metabolism of T. bogorovii BBS exist [ 14 , 66 , 73 ]. All of them indicate that HydSL hydrogenase in purple bacteria is closely connected with sulfur metabolism but, unfortunately, none of them took into account all valid experimental data.…”

Section: Discussionmentioning

confidence: 99%

The Complete Genome of a Novel Typical Species Thiocapsa bogorovii and Analysis of Its Central Metabolic Pathways

Petushkova,

Khasimov,

Mayorova

et al. 2024

Microorganisms

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The purple sulfur bacterium Thiocapsa roseopersicina BBS is interesting from both fundamental and practical points of view. It possesses a thermostable HydSL hydrogenase, which is involved in the reaction of reversible hydrogen activation and a unique reaction of sulfur reduction to hydrogen sulfide. It is a very promising enzyme for enzymatic hydrogenase electrodes. There are speculations that HydSL hydrogenase of purple bacteria is closely related to sulfur metabolism, but confirmation is required. For that, the full genome sequence is necessary. Here, we sequenced and assembled the complete genome of this bacterium. The analysis of the obtained whole genome, through an integrative approach that comprised estimating the Average Nucleotide Identity (ANI) and digital DNA-DNA hybridization (DDH) parameters, allowed for validation of the systematic position of T. roseopersicina as T. bogorovii BBS. For the first time, we have assembled the whole genome of this typical strain of a new bacterial species and carried out its functional description against another purple sulfur bacterium: Allochromatium vinosum DSM 180T. We refined the automatic annotation of the whole genome of the bacteria T. bogorovii BBS and localized the genomic positions of several studied genes, including those involved in sulfur metabolism and genes encoding the enzymes required for the TCA and glyoxylate cycles and other central metabolic pathways. Eleven additional genes coding proteins involved in pigment biosynthesis was found.

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Section: Discussionmentioning

confidence: 99%

The Complete Genome of a Novel Typical Species Thiocapsa bogorovii and Analysis of Its Central Metabolic Pathways

Petushkova,

Khasimov,

Mayorova

et al. 2024

Microorganisms

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“…This enzyme can be arranged into four categories. The Group I H 2 ‐consuming membrane‐bound hupSL hydrogenase is found in both aerobic and anaerobic bacteria ( Aquefixaeolicus ) with an electron transport system via cytochromes 1, 101. This enzyme structure is recognized by a signal peptide linked at the N ‐terminus of a small subunit 29, 101.…”

Section: Enzymes Involved In Biohydrogen Productionmentioning

confidence: 99%

“…were identified. Later, studies demonstrated the presence of hydrogenase enzymes in these species as biohydrogen consumers to control their redox cellular status 1, 101. The enzyme structure consists of two metal irons including sulfur bridges [Fe‐S] in the active site while linked to CO and CN − groups (Fig.…”

Section: Enzymes Involved In Biohydrogen Productionmentioning

confidence: 99%

“…The bidirectional hydrogenase at the cytoplasmic site maintains the redox reaction of cells by reoxidizing cofactors like NAD or NADP, and they need NADPH as an electron donor [29]. Finally, the Group IV hydrogenase is comprised of multimeric ferredoxin-dependent enzymes formed of at least six or more subunits, it produces biohydrogen and commonly membraneassociated enzymes [1,101].…”

Section: [Ni-fe] Hydrogenasementioning

confidence: 99%

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Microorganism‐Assisted Biohydrogen Production and Bioreactors

2022

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Microorganism-assisted biohydrogen (BioH 2 ) is an encouraging replacement of fossil-based fuels as feasible preference for various chemical and mechanical processes. BioH 2 is capable to reduce greenhouse gas emissions and solve environmental issues, therefore, numerous studies addressed optimization of operation design, microbial actions, certain addition of chemicals or nanoparticles, pretreatment of algal biomass, diminishing sensibility of enzymes towards O 2 , integration with different processes for biorefinery approach, reducing costs, bioelectrochemical cell membranes, and others. The present review focuses on model organisms employed for the microorganism-assisted biohydrogen production. Metabolic pathways such as biophotolysis, photofermentation, and dark fermentation were discussed for providing deep insight of microorganism-aided biohydrogen production.

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“…Photobiological production of hydrogen (H 2 ) is considered to be one of the most promising technologies for replacing or complementing fossil fuel-derived energy. In contrast with electricity generated by solar panels and wind mills, H 2 is more easily stored and transported from overseas [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Plastic bags as simple photobioreactors for cyanobacterial hydrogen production outdoors in Moscow region

Shastik

Romanova

Laurinavichene

et al. 2019

Int J Energy Environ Eng

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The application of transparent plastic bags with a gas barrier layer as inexpensive photobioreactors for H 2 production by the cyanobacterium Anabaena sp. PCC 7120 ∆Hup mutant cells was explored outdoors in Moscow region for the first time. Two experiments were performed in July and August, the average daily temperature being 21.7 and 20.6 °C, the average daily light intensity being 290 and 340 µmol photon m −2 s −1 in experiment #1 and #2, respectively. The maximal H 2 production rate was 20.6 mL day −1 L −1 of culture, with accumulation of 33.2 mL L −1 during 5 days and a final H 2 content of 1.1% (v/v). Molecular nitrogen added to the Ar gas at 3.3% significantly affected neither the rate nor the duration of H 2 production. Low morning temperatures as well as high daytime light intensities (especially at low cell concentrations) seemed to reduce the H 2 production rate. The activities obtained were lower as compared to the previously reported data. It could be attributable to suboptimal weather conditions and simple device arrangement. However, results prove that H 2 production by cyanobacteria is still feasible outdoors in plastic bags, the cheapest photobioreactors.

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Hydrogen in metabolism of purple bacteria and prospects of practical application

Cited by 19 publications

References 132 publications

The Complete Genome of a Novel Typical Species Thiocapsa bogorovii and Analysis of Its Central Metabolic Pathways

The Complete Genome of a Novel Typical Species Thiocapsa bogorovii and Analysis of Its Central Metabolic Pathways

Microorganism‐Assisted Biohydrogen Production and Bioreactors

Plastic bags as simple photobioreactors for cyanobacterial hydrogen production outdoors in Moscow region

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