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Wyszukujesz frazę "violaxanthin" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Expression of three diadinoxanthin de-epoxidase genes of Phaeodacylum tricornutum in Escherichia coli Origami b and BL21 strain
Autorzy:
Bojko, Monika
Olchawa-Pajor, Monika
Tuleja, Urszula
Kuczyńska, Paulina
Strzałka, Wojciech
Latowski, Dariusz
Strzałka, Kazimierz
Powiązania:
https://bibliotekanauki.pl/articles/1039507.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
diadinoxanthin cycle
marine diatoms
violaxanthin
de-epoxidation
Opis:
In the diadinoxanthin cycle the epoxy group is removed from diadinoxanthin and diatoxanthin is created. This conversion takes place e.g. in diatoms with the involvement of the enzyme diadinoxanthin de-epoxidase. In one of the diatom species, Phaeodactylum tricornutum (CCAP 1055/1 strain with genome sequenced) three de-epoxidase genes (PtVDE, PtVDL1, PtVDL2) have been identified, but only one of them (PtVDE) corresponds to violaxanthin de-epoxidase, an enzyme which is commonly found in higher plants. In these studies, the expression of two de-epoxidase genes of another Phaeodactylum tricornutum strain (UTEX 646), which is commonly used in diatom studies, were obtained in Origami b and BL21 E. coli strains. The molecular masses of the mature proteins are about 49 kDa and 60 kDa, respectively, for VDE and VDL2. Both enzymes are active with violaxanthin as a substrate.
Źródło:
Acta Biochimica Polonica; 2013, 60, 4; 857-860
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of epoxides in Escherichia coli expressing recombinant zeaxanthin epoxidase
Autorzy:
Kuczynska, P.
Leskiewicz, S.
Strzalka, W.
Olchawa-Pajor, M.
Bojko, M.
Latowski, D.
Strzalka, K.
Powiązania:
https://bibliotekanauki.pl/articles/81277.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
zeaxanthin epoxidase
overexpression
violaxanthin
antheraxanthin
Escherichia coli
spectrofluorometry
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Content of carotenoids in needles of Pinus sylvestris L. growing in a polluted area
Autorzy:
Matysiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/41281.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
beta-carotene
violaxanthin
polluted area
carotenoid content
needle
neoxanthin
growing
Pinus sylvestris
environment pollution
lutein
thin-layer chromatography
heavy metal
Opis:
Carotenoids (neoxanthin, violaxanthin, lutein and β-carotene) present in plant cell play a role in photoprotection. Industrial pollution causes oxidative stress in plants, while carotenoids react with free radicals and dissipate the excess of excitation energy. In this way carotenoids prevent the negative influence of free radicals on metabolism and can even restore some of the damages. This is confirmed by results of our analysis of the level of xanthophylls in 16 and 17-year-old trees of Scots pine (Pinus sylvestris L.). Developed from seed collected in north-eastern, the trees grow in a relatively unpolluted control site, and in a polluted site located 2 km for away from the Phosphorus Fertilizer Works. In the polluted site the environment is contaminated with SO2, NOx and F, Al, F, Pb, Cu. The needles analysed in this study were visually undamaged. Material was collected in experimental plot from 6 trees in October'98 and April'99, between 12.00 and 13.00 hours, at full sunlight. The pigments were analysed quantitatively and qualitatively by thin-layer chromatography. The paper presents results of content and distribution of neoxanthin, violaxanthin, lutein and β-carotene of Scots pine needles from a healthy control tree and a stressed tree. Marked differences in pigment levels depended on the stage of needle development and level of pollution.
Źródło:
Dendrobiology; 2001, 46
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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