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Wyszukujesz frazę "Nitrogen Fixation" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
High-resolution structure of NodZ fucosyltransferase involved in the biosynthesis of the nodulation factor
Autorzy:
Brzezinski, Krzysztof
Stepkowski, Tomasz
Panjikar, Santosh
Bujacz, Grzegorz
Jaskolski, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/1040936.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
nitrogen fixation
glycosyltransferase
nodulation
NodZ
fucosyltransferase
Opis:
The fucosyltransferase NodZ is involved in the biosynthesis of the nodulation factor in nitrogen-fixing symbiotic bacteria. It catalyzes α1,6 transfer of l-fucose from GDP-fucose to the reducing residue of the synthesized Nod oligosaccharide. We present the structure of the NodZ protein from Bradyrhizobium expressed in Escherichia coli and crystallized in the presence of phosphate ions in two crystal forms. The enzyme is arranged into two domains of nearly equal size. Although NodZ falls in one broad class (GT-B) with other two-domain glycosyltransferases, the topology of its domains deviates from the canonical Rossmann fold, with particularly high distortions in the N-terminal domain. Mutational data combined with structural and sequence alignments indicate residues of potential importance in GDP-fucose binding or in the catalytic mechanism. They are all clustered in three conserved sequence motifs located in the C-terminal domain.
Źródło:
Acta Biochimica Polonica; 2007, 54, 3; 537-549
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Translational and structural analysis of the shortest legume ENOD40 gene in Lupinus luteus
Autorzy:
Podkowinski, Jan
Zmienko, Agnieszka
Florek, Blazena
Wojciechowski, Pawel
Rybarczyk, Agnieszka
Wrzesinski, Jan
Ciesiolka, Jerzy
Blazewicz, Jacek
Kondorosi, Adam
Crespi, Martin
Legocki, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1040638.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
nitrogen fixation
transcript structure
ENOD40
phylogeny
Opis:
Two early nodulin 40 (enod40) genes, ENOD40-1, the shortest legume ENOD40 gene, and ENOD40-2, were isolated from Lupinus luteus, a legume with indeterminate nodules. Both genes were expressed at similar levels during symbiosis with nitrogen-fixing bacteria. ENOD40 phylogeny clustered the L. luteus genes with legumes forming determinate nodules and revealed peptide similarities. The ENOD40-1 small ORF A fused to a reporter gene was efficiently expressed in plant cells, indicating that the start codon is recognized for translation. The ENOD40-1 RNA structure predicted based on Pb(II)-induced cleavage and modeling revealed four structurally conserved domains, an absence of domain 4 characteristic for legumes of indeterminate nodules, and interactions between the conserved region I and a region located upstream of domain 6. Domain 2 contains Mg(II) ion binding sites essential for organizing RNA secondary structure. The differences between L. luteus and Glycine max ENOD40 RNA models suggest the possibility of a switch between two structural states of ENOD40 transcript.
Źródło:
Acta Biochimica Polonica; 2009, 56, 1; 89-102
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Yellow lupine gene encoding stearoyl-ACP desaturase - organization, expression and potential application.
Autorzy:
Zaborowska, Żaneta
Starzycki, Michał
Femiak, Iwona
Świderski, Michał
Legocki, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1043803.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
nitrogen fixation
root nodules
stearoyl-ACP desaturase
fatty acids
yellow lupine
Opis:
A gene for the Δturase specific to stearoyl-ACP (acyl carrier protein) was identified from yellow lupine (Lupinus luteus) cDNA and genomic libraries through the differential display method. The desaturase transcript appears in plants infected with Bradyrhizobium sp. (Lupinus) as revealed by Northern hybridization, RT-PCR and expression of β-glucuronidase under the desaturase promoter. A small amount of desaturase transcript was also detected in uninfected plants, which suggests that the gene does not belong to the strict nodule-specific sequences. The desaturase provides unsaturated fatty acids for additional cell membrane synthesis. During nodule and symbiosome development a peribacteroid membrane is formed and the requirement for membrane surface increases, thus the level of desaturase expression is also higher. Transgenic plants of Nicotiana tabacum with overexpression of the full-length lupine stearoyl-ACP desaturase sequence were obtained. They revealed higher content of unsaturated fatty acids (especially oleic acid) in comparison with control plants.
Źródło:
Acta Biochimica Polonica; 2002, 49, 1; 29-42
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization and expression analysis of the yellow lupin (Lupinus luteus L.) gene coding for nodule specific proline-rich protein.
Autorzy:
Karłowski, Wojciech
Stróżycki, Paweł
Legocki, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1044363.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
symbiotic nitrogen fixation
plant gene expression
ENOD2
proline-rich proteins
early nodulins
mRNA degradation
Opis:
The LlPRP2 gene coding for a proline-rich protein shows a high level of similarity to, as well as significant differences from the family of ENOD2 nodule-specific genes. Several sequence motifs with putative regulatory function were identified in the 5' and 3' noncoding regions of the LlPRP2 gene. Northern blot analysis revealed that the expression of the LlPRP2 gene begins 9 days after inoculation of yellow lupin roots with Bradyrhizobium sp. (Lupinus); the expression is restricted to symbiotic nodules and is not detected in other tissues or organs. Detailed hybridization analysis showed that, when expression is activated, the LlPRP2 transcript is modified so as to produce at least three bands and a continuous distribution of decay intermediates. The modification of the LlPRP2 transcript probably involves degradation from the 5'- and/or 3'-ends of the RNA molecules. Southern blot analysis indicates that only one gene is present in the yellow lupin genome. The presence of genes homologous to the LlPRP2 gene was confirmed for three cultivars of yellow lupin and for Lupinus angustifolius. However, LlPRP2 homologues were not detected in Lupinus albus cv. Bac, indicating that this plant may lack the ENOD2 sequence.
Źródło:
Acta Biochimica Polonica; 2000, 47, 2; 371-383
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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