Index Catalog // ScholarsArchive@OSU

The role of methionine in the metabolism of Micrococcus radiodurans

Creator:: Deeney, Anne O'Connell
Resource Type:: Dissertation

Significance of pigments in radiation resistance of Micrococcus radiodurans

Creator:: Krabbenhoft, Kenneth Louis
Abstract:: An ecological study of a microorganism similar to that isolated in 1956 and designated as Micrococcus radiodurans indicated that the organism could be isolated from several different environments. By taking advantage of its radio-resistivity, high levels of gamma radiation were used in the isolation procedures to inactivate most of the...
Resource Type:: Dissertation

Genetic homology and exchange in lactic acid streptococci

Creator:: Knittel, Martin Dean
Abstract:: The dairy industry relies primarily on consistent acid production by the lactic streptococci for the manufacture of certain cheeses and fermented dairy products. Variation in these cultures due to genetic exchange has not been thoroughly investigated. This study was undertaken to determine if genetic homology exists within the lactic group,...
Resource Type:: Dissertation

The terminal reactions in the biosynthesis of methionine in Saccharomyces cerevisiae

Creator:: Pigg, C. JoAnne
Abstract:: The terminal reactions in the biosynthetic pathway of methionine in Saccharomyces cerevisiae were investigated in this study. Analyses of a number of methionine auxotrophs for biochemical deficiences established four mutant groups. It was observed from qualitative feeding experiments that some auxotrophs were able to utilize S-adenosylmethionine (AM) and S-adenosyl-homocysteine (AH)...
Resource Type:: Dissertation

The comparative role of molecular and nitrate-oxygen in the dissimilation of glucose

Creator:: Bhatt, Rajanikant Premshanker
Abstract:: When nitrate is used in a biological electron transport system as the final acceptor of hydrogen to form water, the system is characterized as "Nitrate Respiration." However, the quantitative expression of the over-all participation of NO₃⁻(0) in the oxidation of glucose by denitrifiers such as Pseudomonas stutzeri deserves clarification. In...
Resource Type:: Dissertation

Control of acid production and β-galactosidase synthesis in lactic streptococci

Creator:: Citti, James Edward
Abstract:: The public health and economic significance of rapid acid production by lactic streptococci in controlled dairy fermentations is well known. However, the fast acid-producing characteristic of these organisms is not stable, and cultures of fast organisms have been shown to contain slow cells. These studies were carried out to characterize...
Resource Type:: Dissertation

Host range and chemical composition of lactic streptococcal bacteriophages

Creator:: Henning, David Ralph
Abstract:: Comparisons were made of the abilities of Streptococcus lactis, Streptococcus cremoris and Streptococcus diacetilactis bacteriophages to endure various laboratory isolation and storage treatments. Neutralization of Cottage cheese whey containing phages offered no survival advantage over unneutralized samples, refrigeration of neutral and acid whey samples increased the survival of only the...
Resource Type:: Dissertation

The cysteine to homocysteine conversion in Saccharomyces cerevisiae

Creator:: Sorsoli, Wayne Aldo
Abstract:: The mechanism of transsulfuration and the role of cystathionine in the biosynthesis of methionine in yeast were investigated. Saccharomyces were shown to accumulate cystathionine by use of the ³⁵S labeled compound. Cell-free extracts of the wildtype clone as well as methionine auxotrophs were shown to cleave cystathionine. The enzymatically produced...
Resource Type:: Dissertation

The non-enzymatic formation of nitric oxide from soil and clay systems

Creator:: Wullstein, L. H. (Leroy H.)
Abstract:: Prevailing concepts relating to the non-enzymatic gaseous loss of nitrite from soil are thought to be inadequate as regards to the mechanisms involved. The conventional explanation for nitric oxide formation i.e., the acid decomposition of nitrite, is held to be insufficient in substrates of only mild or slight acidity. A...
Resource Type:: Dissertation

Regulation of the terminal reactions for methionine biosynthesis in yeast

Creator:: Spence, Kemet Dean
Abstract:: Studies were carried out to elucidate the mechanism of enzymatic control of methionine biosynthesis in Saccharomyces cerevisiae. Enzymatic studies demonstrated that, in addition to the methionine activating enzyme, the S-adenosylmethionine:homocysteine transmethylase enzyme was induced during cultivation in the presence of excess methionine. A similar, though reduced effect was observed when...
Resource Type:: Dissertation

ScholarsArchive@OSU

The role of methionine in the metabolism of Micrococcus radiodurans

Significance of pigments in radiation resistance of Micrococcus radiodurans

Genetic homology and exchange in lactic acid streptococci

The terminal reactions in the biosynthesis of methionine in Saccharomyces cerevisiae

The comparative role of molecular and nitrate-oxygen in the dissimilation of glucose

Control of acid production and β-galactosidase synthesis in lactic streptococci

Host range and chemical composition of lactic streptococcal bacteriophages

The cysteine to homocysteine conversion in Saccharomyces cerevisiae

The non-enzymatic formation of nitric oxide from soil and clay systems

Regulation of the terminal reactions for methionine biosynthesis in yeast

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