Yeast species molecular

Jeyaram, K. W., Singh, M., Capece, A., Romano, P. (2008). Molecular identification of yeast species associated with Hamei —a traditional starter used for rice wine production in Manipur, India. International Journal of Food Microbiology, 124, 115-125. 

To overcome these difficulties, researchers have developed a molecular taxonomy over the last 15 years based on the following tests DNA recombination the similarity of DNA base composition the similarity of enzymes ultrastructure characteristics and cell wall composition. The DNA recombination tests have proven to be effective for delimiting yeast species. They measure the recombination percentages of denatured nuclear DNA (mono-stranded) of different strains. An elevated recombination rate between two strains (80-100%) indicates that they belong to the same species. A low recombination percentage (less than 20% of the sequences in common) signifies that the strains belong to different and very distant species. Combination rates between these extremes are more difficult to interpret. 

Candida yeast species. At the molecular level, amitrole stimulates the transcription of the arom gene in Saccharomyces cerevisiae, probably as a cross-pathway response to histidine starvation. ... 

Schneiter, R. Brugger, B. Sandhoff, R. Zellnig, G. Leber, A. Lampl, M. Athenstaedt, K. Hrastnik, C. Eder, S. Daum, G. Paltauf, F. Wieland, F. T. Kohlwein, S. D. Electrospray ionization tandem mass spectrometry (ESI-MS/MS) analysis of the lipid molecular species composition of yeast subcellular membranes reveals acyl chain-based sorting/remodeling of distinct molecular species en route to the plasma membrane. J. Cell Biol. 1999,146,741-754. 

Yeast flocculation mechanism can be described as a phenomenon of adhesion to certain surfaces. The ability to adhere to surfaces and to form biofilm is the basis of the pathogenicity of Candida species. Pathogens adhere to mucous membranes and wounds, they stick to medical instruments and prosthesis, and thus contaminate surfaces in food processing facilities. The high mortality rate in disseminated fungal infections caused an increase in the amount of research on the molecular basis of the adhesive phenomena in Candida. This research discovered a considerable overlap in the molecular regulation of all forms of adhesive behavior. ... 

Found in the chromatin of all eukaryotic cells, histones have molecular weights between 11,000 and 21,000 and are very rich in the basic amino acids arginine and lysine (together these make up about one-fourth of the amino acid residues). All eukaryotic cells have five major classes of histones, differing in molecular weight and amino acid composition (Table 24-3). The H3 histones are nearly identical in amino acid sequence in all eukaryotes, as are the H4 histones, suggesting strict conservation of their functions. For example, only 2 of 102 amino acid residues differ between the H4 histone molecules of peas and cows, and only 8 differ between the H4 histones of humans and yeast. Histones HI, H2A, and H2B show less sequence similarity among eukaryotic species. 

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