In addition, a catalase activity was reported for cytochrome bd-I from E. coli [61]. The small protein CydX is required for the function of the enzyme and has been proposed to be an additional subunit of the complex [28], [29]. Relevant to patho-physiology, cytochrome bd oxidase is ...
extraordinary ubiquinol-1 oxidase activity and a largerKmvalue for O2(Miura et al., 2013;Mogi et al., 2009). Besides,A. methanolicuscan produce a Cytcobelonging to CCO when cultured on methanol (Chan and Anthony, 1991). All of these terminal oxidases, whether UOs or CCOs, generally do...
Published: 09 June 2016 Sinan Al-Attar1,†,Yuanjie Yu1, Martijn Pinkse1, Jo Hoeser2, Thorsten Friedrich2, Dirk Bald3 & Simon de Vries1,$ Cytochrome bd is a prokaryotic terminal oxidase that catalyses the electrogenic reduction of oxygen to water using ubiquinol as electron...
Analysis of the respiratory chain in Ethanologenic Zymomonas mobilis with a cyanide-resistant bd-type ubiquinol oxidase as the only terminal oxidase and its possible physiological roles. J Mol Microbiol Biotechnol. 2008;14:163–75. 15. Quesada A, Guijo MI, Merchán F, Blázquez B, Igeño ...
Cbc1 transfers electrons from ubiquinol to Cc via a Q-cycle mechanism involving four redox cofactors: two b-type hemes in the cytochrome b subunit, 2Fe2S iron-sulfur cluster in the Rieske protein, and the heme group in cytochrome c1 (Cc1) – the actual electron donor to Cc [48,49...
Graham LA, Phillips JD and Trumpower BL (1992) Deletion of subunit 9 of the Saccharomyces cerevisiae cytochrome bc 1 complex specifically impairs electron transfer at the ubiquinol oxidase site (center P) in the bc 1 complex. FEBS Lett 313: 251–254. Article PubMed CAS Google Scholar Graham...
In each case, subunit II was implicated, which was satisfying since the CuA site and docking site for cytochrome c in the related cytochrome c oxidases are located within subunit II. Mutations in one residue in subunit II, WII136A, were shown to perturb the apparent Km of ubiquinol-1 [...
coli ubiquinol oxidase cytochrome bo3 (which contains CuB), except for the heme O synthase [98,99]. C. glutamicum Caa3_CtaG is the C-terminal part of the CtiP protein, which has 16 predicted transmembrane segments, and the region corresponding to segments 7–9 is a homolog of CopD [45]...
1.1). The sites are at NADH-FAD, cytochrome bc1 complex, and the terminal oxidase. In microorganisms with shorter electron transport systems or where electrons enter at other sites in the system or chain (having a more positive redox potential than that of the NADH/NAD + couple), less ATP...
H. seropedicaepossesses a branched aerobic respiratory chain comprising four different types of terminal oxidases4. These are represented by theaa3-type (cox) andcbb3-type (fix) oxidases in the heme copper oxidase branch and thebd-typeandbo3-type oxidases representing the ubiquinol oxidase branch...