Sökning: "radical mechanism"
Visar resultat 1 - 5 av 120 avhandlingar innehållade orden radical mechanism.
1. Allosteric Regulation and Radical Transfer in Ribonucleotide Reductase
Sammanfattning : The stability of biological life over time requires that the integrity of the genetic material of an organism, the genome, be maintained as it is passed on from one generation to the next. All known cellular life has DNA-based genomes, which are duplicated before each cell division in a process called replication. LÄS MER
2. Making Radical Cations Live Longer
Sammanfattning : The acid-catalyzed rearrangement of 1,4,5,8-tetramethylnaphthalene was used to determine the acidity of media used for EPR spectral studies of radical cations. The radical cations of methyl-substituted naphthalenes were shown to undergo dimerization reactions. LÄS MER
3. Quantum Chemical Studies of Radical Cation Rearrangement, Radical Carbonylation, and Homolytic Substitution Reactions
Sammanfattning : Quantum chemical calculations have been performed to investigate radical cation rearrangement, radical carbonylation, and homolytic substitution reactions of organic molecules. The rearrangement of the bicyclopropylidiene radical cation to the tetramethyleneethane radical cation is predicted to proceed with stepwise disrotatory opening of the two rings. LÄS MER
4. Understanding the mechanisms behind atom transfer radical polymerization : exploring the limit of control
Sammanfattning : Atom transfer radical polymerization (ATRP) is one of the most commonly employed techniques for controlled radical polymerization. ATRP has great potential for the development of new materials due to the ability to control molecular weight and polymer architecture. LÄS MER
5. Essential conserved active site residues in class Ia ribonucleotide reductase from Escherichia coli : identification of radical reaction intermediates and radical transfer intermediates
Sammanfattning : The enzyme ribonucleotide reductase catalyzes the reduction of ribonucleotides to the corresponding deoxyribonucleotides, the building blocks of DNA. The class Ia enzyme from Escherichia coli consists of two homodimeric subunits denoted protein R1 and protein R2, each inactive alone. LÄS MER