Search for dissertations about: "ubiquinol oxidase"

Showing result 1 - 5 of 6 swedish dissertations containing the words ubiquinol oxidase.

  1. 1. Structural studies on the integral membrane protein, ubiquinol oxidase from Escherichia coli

    Author : Jeff Abramson; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; crystal structure; ubiquinol oxidase; membrane protein; oxidases; Biokemi; Biochemistry; Biokemi; biokemi; Biochemistry;

    Abstract : Heme-copper oxidases are redox-driven proton pumps that couple the reduction of molecular oxygen to water with the vectorial translocation of protons across the membrane. The proton gradient generated by heme-copper oxidases and the other members of the aerobic respiratory chain is ultimately used to drive the synthesis of ATP. READ MORE

  2. 2. Oxidative stress and mitochondrial function : Role of ubiquinol as antioxidant

    Author : Patrik Andrée; Karolinska Institutet; Karolinska Institutet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP;

    Abstract : Doctoral Dissertation 1996 Clinical Research Center Division of Medical Cell Biology Karolinska Institutet, NOVUM S-141 86 Huddinge, Sweden Over the last three decades it has been established that biquinone (coenzyme Q), in addition to its function as an electron and proton carrier in the respiratory chain, acts in its reduced form (ubiquinol) as an antioxidant. The main theme of this thesis is a study of the antioxidant function of ubiquinol in preparations of beef heart submitochondrial particles, which consist of inverted vesicular fragments of the inner mitochondrial membrane. READ MORE

  3. 3. Paramagnetic states of diiron carboxylate proteins

    Author : Nina Voevodskaya; Astrid Gräslund; Peter Brzezinski; Howard Dalton; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; electron paramagnetic resonance; diiron carboxilate proteins; ribonucleotide reductase; alternative oxidase; Biophysics; Biofysik;

    Abstract : Diiron carboxylate proteins constitute an important class of metall-containing enzymes. These proteins perform a multitude of reactions in biological systems that normally involve activation of molecular oxygen at the diiron site. READ MORE

  4. 4. Structural and Functional Studies of Diiron Carboxylate Proteins

    Author : Pål Stenmark; Pär Nordlund; Howard Dalton; Stockholms universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Biokemi;

    Abstract : Iron is essential to all life; it is a vital component of many proteins in humans as well as plants and bacteria. Because of the ability of iron to activate oxygen, it is often found in proteins that interact with oxygen in some way. READ MORE

  5. 5. Structural studies and design of Di-iron carboxylate proteins

    Author : Martin Andersson; Martin Bollinger Jr; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; biokemi; Biochemistry;

    Abstract : Di-iron carboxylate proteins perform a wide range of chemical reactions in the cell. These reactions often involve activation of dioxygen to generate highly oxidative species that can be used in catalysis. One member of the di-iron carboxylate family is the enzyme ribonucleotide reductase (RNR). READ MORE