In this work new data were gathered for GTP cyclohydrolases II und 3,4 dihydroxy-2-butanon 4-phosphat synthases from several organisms. After the creation of expression-constructs the recombinant proteins were expressed in different strains of E. coli. The research on the purified enzymes included Michaelis-Menten kinetics, the determination of zinc-atoms in the active sites, NMR-spectroscopy, several methods of determination of the quaternary structures and thermodynamic research. In a mutagenesis study the influences of several amino acids on the reaction mechanism of GTP cyclohydrolase II were examined.
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In this work new data were gathered for GTP cyclohydrolases II und 3,4 dihydroxy-2-butanon 4-phosphat synthases from several organisms. After the creation of expression-constructs the recombinant proteins were expressed in different strains of E. coli. The research on the purified enzymes included Michaelis-Menten kinetics, the determination of zinc-atoms in the active sites, NMR-spectroscopy, several methods of determination of the quaternary structures and thermodynamic research. In a mutagene...
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