Search for dissertations about: "sulfur metabolism"

Showing result 1 - 5 of 18 swedish dissertations containing the words sulfur metabolism.

2. 1. Magnesium Chelatase: Insights into the first Step of Chlorophyll Biosynthesis

   Author : Nick Sirijovski; Biokemi och Strukturbiologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electron microscopy; Proteobacteria; Mutants; Rhodobacter capsulatus; Tetrapyrrole; Plant biochemistry; Växtbiokemi; Biochemistry; Metabolism; Biokemi; metabolism; Proteins; enzymologi; enzymology; Proteiner; Chlorophyll biosynthesis; AAA proteins; Magnesium chelatase; Barley; ATPase;

   Abstract : The enzyme magnesium chelatase inserts magnesium into protoporphyrin IX (Proto) to produce to magnesium protoporphyrin IX, the first unique intermediate of the chlorophyll biosynthetic pathway. Magnesium chelatase is composed of three distinct proteins termed I (molecular weight ~40 kDa), D (~70 kDa) and H (~140 kDa). READ MORE

4. 2. NADH:quinone oxidoreductase: the black box of the respiratory chain

   Author : Robert Roth; Biokemi och Strukturbiologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NADH:quinone oxidoreductase; Complex I; electron transport; membrane protein; ubiquinone; respiratory chain; respiration; metabolism; Metabolism; Biokemi; Biochemistry;

   Abstract : Complex I or NADH:quinone oxidoreductase the largest, most complex and least understood of the five membrane-bound enzyme complexes constituting the mitochondrial respiratory chain. The enzyme is present in all types of organisms, from bacteria to mammals. READ MORE

5. 3. Phylogenetic characterization of microbial mats and isolation of Thermus spp. and sulfur-oxidizing bacteria from Icelandic hot springs

   Author : Sigurlaug Skirnisdottir; Bioteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biochemical technology; hot springs; thermophiles; microbial diversity; SSU rRNA; sulfur-oxidizers; Thermus; Biotechnology; Bioteknik; Biochemistry; Biokemi; Metabolism; Biokemisk teknik;

   Abstract : Until recently, the only way to describe microbial communities was by cultivation. This is a major obstacle because typically only a small fraction of the microbes can be cultivated by standard techniques. However, the use of rRNA and molecular phylogenetic techniques has allowed us to bypass this limitation. READ MORE

6. 4. Formation of Thiolated Nucleosides in tRNA in Salmonella enterica serovar typhimurium

   Author : Hans Lundgren; Glenn Björk; Charles Lauhon; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; : tRNA; modified nucleosides; thiolation; sulfur metabolism; Salmonella; Molecular biology; Molekylärbiologi;

   Abstract : The presence and synthesis of transfer RNA (tRNA) is highly conserved in all organisms and a lot of genetic material is dedicated to its synthesis. tRNA contains a large number of modified nucleosides and several diverse functions have been found but much about their function is still unknown. READ MORE

7. 5. When bioelectrochemical systems meet extremophiles, possibilities and challenges

   Author : Gaofeng Ni; Mark Dopson; Bert Hamelers; Linnéuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; acidophiles; psychrophiles; haloalkaliphiles; bioelectrochemical systems; microbial sulfur metabolism; 16S rRNA gene amplicon sequencing; metagenomics; metatranscriptomics; Mikrobiologi; Microbiology;

   Abstract : Extremophiles are microorganisms live and thrive in extreme environments that are harsh and hostile to most forms of life on earth (e.g. low pH, low temperature, high pH and high salinity). They have developed strategies to obtain nutrients and conserve energy to sustain life under these adverse conditions. READ MORE