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Induction of Cryptococcus laurentii α-galactosidase

  • Csilla Mészárosová EMAIL logo , Nadežda Kolarova , Renáta Vadkertiová and Eva Stratilová
Published/Copyright: June 22, 2012
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Chemical Papers
From the journal Chemical Papers Volume 66 Issue 9

Abstract

The surface activity of Cryptococcus laurentii α-galactosidase can be significantly (up to 80 times) influenced by a carbon source present in a cultivation medium. Induction of this enzyme is stimulated by the presence of saccharides containing bound galactose. The highest activity observed when the cells grew in a lactose medium was probably a consequence of the absence of cleavage products serving as repressors (glucose). This idea is supported by the poor growth of cells in the medium with lactose as the carbon source. The induction of surface α-galactosidase was accompanied by increased activities in cytosole. The membrane fraction also contained this enzyme, but the influence of the carbon source was not proportional. The induction of α-galactosidase may play an important role in galactose metabolism of the genus Cryptococcus with a direct influence on the virulence of these capsular yeasts.

Keywords: Cryptococcus laurentii; α-galactosidase; induction; capsular polysaccharides; capsule

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Published Online: 2012-6-22
Published in Print: 2012-9-1

© 2012 Institute of Chemistry, Slovak Academy of Sciences

Articles in the same Issue

  1. 5th Meeting on Chemistry & Life 2011
  2. Induction of Cryptococcus laurentii α-galactosidase
  3. Incorporation of β-(1,6)-linked glucooligosaccharides (pustulooligosaccharides) into plant cell wall structures
  4. Metal-metabolomics of microalga Chlorella sorokiniana growing in selenium- and iodine-enriched media
  5. Metabolomic approach to Alzheimer’s disease diagnosis based on mass spectrometry
  6. Seasonal changes of Rubisco content and activity in Fagus sylvatica and Picea abies affected by elevated CO2 concentration
  7. Identification and determination of relatedness of lactobacilli using different DNA amplification methods
  8. Production of Geotrichum candidum polygalacturonases via solid state fermentation on grape pomace
  9. Monitoring of yeast population isolated during spontaneous fermentation of Moravian wine
  10. Biodegradable polyhydroxybutyrate as a polyol for elastomeric polyurethanes
  11. Conformational changes in humic acids in aqueous solutions
  12. Preparation and properties of cementitious composites for geothermal applications
https://doi.org/10.2478/s11696-012-0170-2
Keywords for this article
Cryptococcus laurentii; α-galactosidase; induction; capsular polysaccharides; capsule

Articles in the same Issue

  1. 5th Meeting on Chemistry & Life 2011
  2. Induction of Cryptococcus laurentii α-galactosidase
  3. Incorporation of β-(1,6)-linked glucooligosaccharides (pustulooligosaccharides) into plant cell wall structures
  4. Metal-metabolomics of microalga Chlorella sorokiniana growing in selenium- and iodine-enriched media
  5. Metabolomic approach to Alzheimer’s disease diagnosis based on mass spectrometry
  6. Seasonal changes of Rubisco content and activity in Fagus sylvatica and Picea abies affected by elevated CO2 concentration
  7. Identification and determination of relatedness of lactobacilli using different DNA amplification methods
  8. Production of Geotrichum candidum polygalacturonases via solid state fermentation on grape pomace
  9. Monitoring of yeast population isolated during spontaneous fermentation of Moravian wine
  10. Biodegradable polyhydroxybutyrate as a polyol for elastomeric polyurethanes
  11. Conformational changes in humic acids in aqueous solutions
  12. Preparation and properties of cementitious composites for geothermal applications
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