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Showing 1 to 6 of 6 for “"oxygen reductase"”.
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Biochemical characterization of C-family heme copper oxygen reductase
Heme copper oxygen reductases (HCOs) are key enzymes for aerobic respiration. As a terminal electron acceptor, HCO catalyzes the sequential transfer of four electrons from reduced cytochromes c on the P-side of the membrane, and four protons from the cytosol on the N-side, to molecular O2 bound at …
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Studies on the cytochrome bd-type oxygen reductase superfamily and the discovery of a novel nitric oxide reductase
… aerobic respiration on the planet– the bd-type oxygen reductase superfamily and the heme-copper oxidoreductase superfamily. The bd-type oxygen reductases are present in bacteria and archaea and catalyze the 4-electron reduction of oxygen to water. Electrons from membrane bound quinols first …
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Studies of proton pumping mechanism in BA3 type cytochrome oxidase of thermus thermophilus and CBB3 type cytochrome oxidase of vibrio cholerae
Oxygen reductase members of the heme-copper oxidoreductase superfamily are redox-driven proton pumps which couple the free energy liberated from the reduction of O2 to the translocation of protons across the membrane. The A-family requires two proton input channels (D- and K-channels) to transfer …
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The Heme -Copper Oxidoreductase Superfamily: Genomics and Structural Analyses
… the sequence diversity of the heme-copper oxidoreductase superfamily by analyzing over 1100 microbial genomes (Bacteria and Archaea) and nine microbial environmental metagenomic datasets. Over 2000 new putative members were found which we classify into eight oxygen reductase families (A-, B-, …
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Automated data acquisition and analysis for high-resolution Fourier transform mass spectrometry of proteins and peptides
… in the active site of the C-type heme-copper oxygen reductase from Vibrio cholera was performed. Though the sequences in the region differed, other members of the HCO superfamily contained a similar cross-link (confirmed by mass spectrometry and crystal structures) that is important in the …
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The interactions of cytochrome bo3 from Escherichia coli with its substrates - ubiquinone and oxygen
Heme-copper respiratory oxygen reductases reduce O2 to water and use the redox free energy to generate the proton motive force. Among the heme-copper oxygen reductases are the quinol oxidases, which catalyze the 2-electron oxidation of ubiquinol or menaquinol instead of cytochrome c. Escherichia …