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Accumulation of 241Am by crucian carp from food and water / T. A. Zotina [et al.] // Doklady Biological Sciences. - 2011. - Vol. 439, Is. 1. - P248-252, DOI 10.1134/S001249661104017X . - ISSN 0012-4966
Кл.слова (ненормированные):
Carassius -- Cyprinidae -- americium -- water -- animal -- animal food -- article -- carp -- ecology -- metabolism -- physiology -- pollutant -- radioactive waste -- water pollutant -- Americium -- Animal Feed -- Animals -- Carps -- Ecology -- Environmental Pollutants -- Radioactive Waste -- Water -- Water Pollutants, Radioactive

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zotina, T.A.; Trofimova, E.A.; Dementiev, D.V.; Bolsunovsky, A.Y.

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Species-specific stimulation of cyanobacteria by silver carp Hypophthalmichthys molitrix (Val.) / V. I. Kolmakov [et al.] // Doklady Biological Sciences. - 2006. - Vol. 408, Is. 1. - P223-225, DOI 10.1134/S0012496606030069 . - ISSN 0012-4966
Кл.слова (ненормированные):
animal -- article -- carp -- Cyanobacterium -- growth, development and aging -- microbiology -- species difference -- Animals -- Carps -- Cyanobacteria -- Species Specificity -- Cyanobacteria -- Cyprinus carpio -- Hypophthalmichthys molitrix -- Hypophthalmichthys nobilis

Scopus
Держатели документа:
Krasnoyarsk State University, Krasnoyarsk, 660062, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Agricultural University, pr. Mira 88, Krasnoyarsk, 660049, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kolmakov, V.I.; Gladyshev, M.I.; Kravchuk, E.S.; Chuprov, S.M.; Anishchenko, O.V.; Ivanova, E.A.; Trusova, M.Yu.

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Bioaccumulation, inter-organ distribution, and retention of waterborne and dietary Am-241 in silver crucian carp [Text] / T. A. Zotina [et al.] // Toxicol Environ. Chem. - 2014. - Vol. 96, Is. 2. - P243-254, DOI 10.1080/02772248.2014.941368. - Cited References: 25 . - ISSN 0277-2248. - ISSN 1029-0486

РУБ Environmental Sciences + Toxicology
Рубрики:
YENISEI RIVER
   TELEOST FISH
   RADIONUCLIDES
   METALS
   AMERICIUM
   EXPOSURE
   ELEMENTS
   ASSIMILATION
   ELASMOBRANCH
   DEPURATION
Кл.слова (ненормированные):
Americium-241 -- assimilation -- Carassius auratus gibelio -- force-feeding
Аннотация: The bioaccumulation of actinide Am-241 from food and water in bodies of freshwater fish (Carassius auratus gibelio, silver crucian carp) has been investigated in laboratory experiments. Homogenized biomass of submerged macrophytes labeled with Am-241 was injected into the fish gullet. Internal organs and tissues of crucian carp could be ranked according to activity concentration of dietary Am-241 after depuration of the digestive tract as follows: liver > gonads > bones > muscles. Accumulation of waterborne Am-241 in internal organs and tissues of crucian carp mainly occurred via the digestive tract. While the concentration of Am-241 in liver of crucian carps decreased during depuration time, its concentration in bones increased indicating slower transfer of Am-241 to skeleton compared to muscles and liver. The retention of dietary Am-241 in the bodies of crucian carp reached 35%-46% of ingested Am-241: 20%-31% was retained in liver, 0.6%-0.8% in skeleton, and 1.4%-2.0% in muscles. The concentration factor of Am-241 from water was 0.4 for the whole body, 0.3 for liver, 0.01 for muscles, and 0.01 for skeleton. Trace amounts of Am-241 were recorded in viscera and muscles of a wild population of silver crucian carp inhabiting a radioactively contaminated part of the Yenisei River.

WOS,
Scopus
Держатели документа:
[Zotina, T. A.
Trofimova, E. A.
Dementyev, D. V.
Bolsunovsky, A. Y.] Inst Biophys SB RAS, Krasnoyarsk, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zotina, T.A.; Trofimova, E.A.; Dementyev, D.V.; Bolsunovsky, A.Y.

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H2O-Bridged Proton-Transfer Channel in Emitter Species Formation in Obelin Bioluminescence / S. -F. Chen, E. S. Vysotski, Y. -J. Liu // J Phys Chem B. - 2021, DOI 10.1021/acs.jpcb.1c03985 . - Article in press. - ISSN 1520-6106
Кл.слова (ненормированные):
Amino acids -- Excited states -- Hydrogen bonds -- Molecular dynamics -- Molecular modeling -- Molecules -- Phosphorescence -- Proton transfer -- Quantum theory -- Fast protons -- Marine organisms -- Photoproteins -- Primary products -- Proton transfer process -- Quantum mechanics/molecular mechanics -- Reaction substrates -- Singlet excited state -- Theoretical calculations -- Transfer channel -- Bioluminescence
Аннотация: Bioluminescence of a number of marine organisms is conditioned by Ca2+-regulated photoprotein (CaRP) with coelenterazine as the reaction substrate. The reaction product, coelenteramide, at the first singlet excited state (S1) is the emitter of CaRP. The S1-state coelenteramide is produced via the decomposition of coelenterazine dioxetanone. Experiments suggested that the neutral S1-coelenteramide is the primary emitter species. This supposition contradicts with theoretical calculations showing that the anionic S1-coelenteramide is a primary product of the decomposition of coelenterazine dioxetanone. In this study, applying molecular dynamic (MD) simulations and the hybrid quantum mechanics/molecular mechanics (QM/MM) method, we investigated a proton-transfer (PT) process taking place in CaRP obelin from Obelia longissima for emitter formation. Our calculations demonstrate a concerted PT process with a water molecule as a bridge between anionic S1-coelenteramide and the nearest histidine residue. The low activation barrier as well as the strong hydrogen-bond network between the proton donor and the proton acceptor suggests a fast PT process comparable with that of the lifetime of excited anionic S1-coelenteramide. The existence of the PT process eliminates the discrepancy between experimental and theoretical studies. The fast PT process at emitter formation can also take place in other CaRPs. © 2021 American Chemical Society.

Scopus
Держатели документа:
School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
Photobiology Laboratory, Institute of Biophysics SB RAS, Federal Research Center, Krasnoyarsk Science Center SB RAS, Krasnoyarsk, 660036, Russian Federation
Center for Advanced Materials Research, Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai, 519087, China
Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China

Доп.точки доступа:
Chen, S. -F.; Vysotski, E. S.; Liu, Y. -J.

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H2O-Bridged Proton-Transfer Channel in Emitter Species Formation in Obelin Bioluminescence / S. F. Chen, E. S. Vysotski, Y. J. Liu // J. Phys. Chem. B. - 2021. - Vol. 125, Is. 37. - P10452-10458, DOI 10.1021/acs.jpcb.1c03985. - Cited References:50. - This work was supported by the Program of Shanghai Institute of Technology (no. YJ2016-42), the National Natural Science Foundation of China (21973005 and 21911530094), and the Russian Foundation for Basic Research (20-04-00085 and 19-14-53004). . - ISSN 1520-6106. - ISSN 1520-5207

РУБ Chemistry, Physical
Рубрики:
CHEMILUMINESCENT DECOMPOSITION
   FLUORESCENCE-SPECTRA
   MECHANISM
   QM/MM
Аннотация: Bioluminescence of a number of marine organisms is conditioned by Ca2+-regulated photoprotein (CaRP) with coelenterazine as the reaction substrate. The reaction product, coelenteramide, at the first singlet excited state (S-1) is the emitter of CaRP. The S-1-state coelenteramide is produced via the decomposition of coelenterazine dioxetanone. Experiments suggested that the neutral S-1-coelenteramide is the primary emitter species. This supposition contradicts with theoretical calculations showing that the anionic S-1-coelenteramide is a primary product of the decomposition of coelenterazine dioxetanone. In this study, applying molecular dynamic (MD) simulations and the hybrid quantum mechanics/molecular mechanics (QM/MM) method, we investigated a proton-transfer (PT) process taking place in CaRP obelin from Obelia longissima for emitter formation. Our calculations demonstrate a concerted PT process with a water molecule as a bridge between anionic S-1-coelenteramide and the nearest histidine residue. The low activation barrier as well as the strong hydrogen-bond network between the proton donor and the proton acceptor suggests a fast PT process comparable with that of the lifetime of excited anionic S-1-coelenteramide. The existence of the PT process eliminates the discrepancy between experimental and theoretical studies. The fast PT process at emitter formation can also take place in other CaRPs.

WOS
Держатели документа:
Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China.
Fed Res Ctr Krasnoyarsk Sci Ctr SB RAS, Inst Biophys SB RAS, Photo Biol Lab, Krasnoyarsk 660036, Russia.
Beijing Normal Univ Zhuhai, Ctr Adv Mat Res, Adv Inst Nat Sci, Zhuhai 519087, Peoples R China.
Beijing Normal Univ, Coll Chem, Key Lab Theoret & Computat Photochem, Minist Educ, Beijing 100875, Peoples R China.

Доп.точки доступа:
Chen, Shu-Feng; Vysotski, Eugene S.; Liu, Ya-Jun; Vysotski, Eugene; Program of Shanghai Institute of Technology [YJ2016-42]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21973005, 21911530094]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-04-00085, 19-14-53004]

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