Nejvíce citovaný článek - PubMed ID 15114868
Effectiveness of Cyanothece spp. and Cyanospira capsulata exocellular polysaccharides as antiadhesive agents for blocking attachment of Helicobacter pylori to human gastric cells
This paper provides a comprehensive overview of metabolites, including lipids and lipid-like compounds, nitrogen metabolites, oligopeptides and amino acid derivatives, produced by cyanobacteria of the genera Anabaenopsis, Aphanizomenon, Aulosira, Cylindrospermopsis, Cylindrospermum, Nodularia, and Richelia of the family Nostocaceae.
- MeSH
- aminokyseliny metabolismus MeSH
- bakteriální polysacharidy metabolismus MeSH
- bakteriální toxiny metabolismus MeSH
- hydroxykyseliny metabolismus MeSH
- metabolismus lipidů MeSH
- Nostoc chemie klasifikace metabolismus MeSH
- oligopeptidy metabolismus MeSH
- sloučeniny dusíku metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- přehledy MeSH
- Názvy látek
- aminokyseliny MeSH
- bakteriální polysacharidy MeSH
- bakteriální toxiny MeSH
- hydroxykyseliny MeSH
- oligopeptidy MeSH
- sloučeniny dusíku MeSH
The influence of high light intensity on the growth and pigment accumulating ability of Anabaena azollae was investigated. A. azollae responded positively to high light intensity (6 klx) and was further evaluated at higher intensities (10 and 15 klx), in the presence of glucose, sucrose and jaggery +/- DCMU. Significant enhancement in phycobiliproteins and carotenoids was observed in the sugar supplemented cultures at high light intensities. SDS-PAGE profiles of whole cell proteins revealed the presence of unique bands in such treatments. Sucrose supplementation induced a 30-90 % increase in carotenoids, phycocyanin and phycoerythrin content at 10 klx. Molecular analysis of the stimulatory and interactive role of sugars on pigment enhancement at high light intensity may aid in better exploitation of cyanobacteria as a source of pigments.
- MeSH
- Anabaena chemie růst a vývoj metabolismus účinky záření MeSH
- bakteriální proteiny analýza izolace a purifikace MeSH
- biologické pigmenty analýza MeSH
- elektroforéza v polyakrylamidovém gelu MeSH
- fykocyanin analýza MeSH
- fykoerythrin analýza MeSH
- glukosa metabolismus MeSH
- karotenoidy analýza MeSH
- metabolismus sacharidů * MeSH
- proteom analýza MeSH
- rostlinné extrakty metabolismus MeSH
- Saccharum metabolismus MeSH
- sacharosa metabolismus MeSH
- světlo * MeSH
- světlosběrné proteinové komplexy analýza MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- bakteriální proteiny MeSH
- biologické pigmenty MeSH
- fykocyanin MeSH
- fykoerythrin MeSH
- glukosa MeSH
- Gur MeSH Prohlížeč
- karotenoidy MeSH
- proteom MeSH
- rostlinné extrakty MeSH
- sacharosa MeSH
- světlosběrné proteinové komplexy MeSH
Addition of nitrogen source (nitrate), carbon sources (acetate, citrate and fructose), depletion of nutrients (phosphate-free nitrate medium), dilution of medium (2, 4 and 8 times diluted nitrate medium) under unaerated conditions induced akinete differentiation in Anabaena torulosa. Aerated cultures under the same conditions did not differentiate akinetes. The amounts of reserve metabolites--glycogen and cyanophycin (multi-L-arginyl-poly-L-aspartic acid) granule polypeptide (CGP)--were determined in unaerated and aerated cultures, and at different stages of growth and akinete differentiation. The addition of nitrate, acetate, citrate and fructose under unaerated conditions resulted in the accumulation of glycogen and CGP in higher amounts after 4 d (akinete initiation); the CGP content further changed at mature free akinetes phase. Higher accumulation of reserve products was also observed under nutrient deficiency (phosphate-depleted or diluted media) after 4 d of cultivation. Under aerated conditions reserve product accumulation was considerably lower. Thus a low accumulation of reserve products in aerated cultures showed that aeration probably somehow relieves the organism from a nutritional stress.
- MeSH
- Anabaena růst a vývoj metabolismus MeSH
- bakteriální proteiny metabolismus MeSH
- dusík metabolismus MeSH
- glykogen metabolismus MeSH
- kultivační média MeSH
- rostlinné proteiny metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- bakteriální proteiny MeSH
- cyanophycin MeSH Prohlížeč
- dusík MeSH
- glykogen MeSH
- kultivační média MeSH
- rostlinné proteiny MeSH