Abstract
Cytochrome c oxidase (COX) is the terminal oxidase of the mitochondrial respiratory system. This enzyme reduces molecular oxygen (O2) to water in a reaction coupled with the pumping of protons across the mitochondrial inner membrane. Progress in investigating the reaction mechanism of this enzyme has been limited by the resolution of its X-ray structure. Bovine heart COX has provided the highest resolution (1.8 Å) X-ray structure presently available among the terminal oxidases. The reaction mechanism of the bovine heart enzyme has been the most extensively studied, particularly with respect to (1) the reduction of O2 to water without release of reactive oxygen species, (2) the mechanism of coupling between the O2 reduction process and proton pumping, (3) the structural basis for unidirectional proton transfer (proton pumping), and (4) the effective prevention of proton leakage from the proton-pumping pathway to the proton pathway used for generation of water molecules. In this chapter, we will review recent structural studies of bovine heart COX and discuss the mechanisms described earlier in context of the structural data.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Aoyama H, Muramoto K, Shinzawa-Itoh K, Hirata K et al (2009) A peroxide bridge between Fe and Cu ions in the O2 reduction site of fully oxidized cytochrome c oxidase could suppress the proton pump. Proc Natl Acad Sci USA 106:2165–2169
Arnold S, Kadenbach B (1997) Cell respiration is controlled by ATP, an allosteric inhibitor of cytochrome-c oxidase. Eur J Biochem 249:350–354
Caughey WS, Smythe GA, O’Keefe DH, Maskasky JE, Smith ML (1975) Heme A of cytochrome c oxidase. J Biol Chem 250:7602–7622
Caughey WS, Wallace WJ, Volpe JA, Yoshikawa S (1976) Cytochrome c oxidase. In: Boyer PD (ed) The enzymes, volume XIII. Oxidation-reduction, Part C, 3rd edn. Academic, New York
Chang HY, Hemp J, Chen Y, Fee JA, Gennis RB (2009) The cytochrome ba 3 oxygen reductase from Thermus thermophilus uses a single input channel for proton delivery to the active site and for proton pumping. Proc Natl Acad Sci USA 106:16169–16173
Fabian M, Skultety L, Brunel C, Palmer G et al (2001) Cyanide stimulated dissociation of chloride from the catalytic center of oxidized cytochrome c oxidase. Biochemistry 40:6061–6069
Fiamingo FG, Altshuld RA, Moh PP, Alben JO (1982) Dynamic interactions of CO with a3Fe and CuB in cytochrome c oxidase in beef heart mitochondria studied by Fourier transform infrared spectroscopy at low temperatures. J Biol Chem 257:1639–1650
Frank V, Kadenbach B (1996) Regulation of the H+/e− stoichiometry of cytochrome c oxidase from bovine heart by intramitochondrial ATP/ADP ratios. FEBS Lett 382:121–124
Gilderson G, Salomonson L, Aagaard A, Gray J et al (2003) Subunit III of cytochrome c oxidase of Rhodobacter sphaeroides is required to maintain rapid proton uptake through the D pathway at physiologic pH. Biochemistry 42:7400–7409
Hemp J, Han H, Roh JH, Kaplan S et al (2007) Comparative genomics and site-directed mutagenesis support the existence of only one input channel for protons in the C-family (cbb 3 oxidase) of heme-copper oxygen reductases. Biochemistry 46:9963–9972
Isaacs NS (1995) Physical organic chemistry, 2nd edn. Longman, Essex
Kadenbach B, Ungibauer M, Jarausch J, Buge U, Kuhn-Nentwig L (1983) The complexity of respiratory complexes. Trends Biochem Sci 8:398–400
Kamiya K, Boero M, Tateno M, Shiraishi K, Oshiyama A (2007) First-principles molecular dynamics study of proton transfer mechanism in bovine cytochrome c oxidase. J Am Chem Soc 129:9663–9673
Kitagawa T, Ogura T (1997) Oxygen activation mechanism at binuclear site of heme-copper oxidase superfamily as revealed by time-resolved resonance Raman spectroscopy. Prog Inorg Chem 45:431–479
Konstantinov A, Siletsky S, Mitchell D, Kaulen A, Gennis RB et al (1997) The roles of the two proton input channels in cytochrome c oxidase from Rhodobacter sphaeroides probed by the effects of site-directed mutations on time-resolved electrogenic intraprotein proton transfer. Proc Natl Acad Sci USA 94:9085–9090
Lee I, Bender E, Arnold S, Kadenbach B (2001) New control of mitochondrial membrane potential and ROS formation–a hypothesis. Biol Chem 382:1629–1636
Mochizuki M, Aoyama H, Shinzawa-Itoh K, Usui T et al (1999) Quantitative reevaluation of the redox active sites of crystalline bovine heart cytochrome c oxidase. J Biol Chem 274:33403–33411
Muramoto K, Ohta K, Shinzawa-Itoh K, Kanda K et al (2010) Bovine cytochrome c oxidase structures enable O2 reduction with minimization of reactive oxygens and provide a proton-pumping gate. Proc Natl Acad Sci USA 107:7740–7745
Napiwotzki J, Shinzawa-Itoh K, Yoshikawa S, Kadenbach B (1997) ATP and ADP bind to cytochrome c oxidase and regulate its activity. Biol Chem 378:1013–1021
Oliveberg M, Malmstrom BG (1992) Reaction of dioxygen with cytochrome c oxidase reduced to different degrees: indications of a transient dioxygen complex with copper-B. Biochemistry 31:3560–3563
Pawate AS, Morgan J, Namslauer A, Mills D et al (2002) A mutation in subunit I of cytochrome oxidase from Rhodobacter sphaeroides results in an increase in steady-state activity but completely eliminates proton pumping. Biochemistry 41:13417–13423
Potter WT, Tucker MP, Houtchens RA, Caughey WS et al (1987) Oxygen infrared spectra of oxyhemoglobins and oxymyoglobins. Evidence of two major liganded O2 structures. Biochemistry 26:4699–4707
Sakaguchi M, Shinzawa-Itoh K, Yoshikawa S, Ogura T (2010) A resonance Raman band assignable to the O-O stretching mode in the resting oxidized state of bovine heart cytochrome c oxidase. J Bioenerg Biomembr 42:241–243
Sasaroli M, Ching Y-C, Dasgupta S, Rousseau DL (1989) Cytochrome c oxidase: evidence for interaction of water molecules with cytochrome a. Biochemistry 28:3128–3132
Shimokata K, Katayama Y, Murayama H, Suematsu M et al (2007) The proton pumping pathway of bovine heart cytochrome c oxidase. Proc Natl Acad Sci USA 104:4200–4205
Shinzawa-Itoh K, Aoyama H, Muramoto K, Terada H et al (2007) Structures and physiological roles of 13 integral lipids of bovine heart cytochrome c oxidase. EMBO J 26:1713–1725
Suga M, Yano N, Muramoto K, Shinzawa-Itoh K et al (2011) Distinguishing between Cl− and O 2−2 as the bridging element between Fe3+ and Cu2+ in resting-oxidized cytochrome c oxidase. Acta Crystallogr D Biol Crystallogr D67:742–744
Thornstrom PE, Nilsson T, Malmstrom BG (1988) The possible role of the closed-open transition in proton pumping by cytochrome c oxidase: the pH dependence of cyanide inhibition. Biochim Biophys Acta 935:103–108
Tsukihara T, Aoyama H, Yamashita E, Tomizaki T et al (1996) The whole structure of the 13-subunit oxidized cytochrome c oxidase at 2.8 Å. Science 272:1136–1144
Tsukihara T, Shimokata K, Katayama Y, Shimada H et al (2003) The low-spin heme of cytochrome c oxidase as the driving element of the proton-pumping process. Proc Natl Acad Sci USA 100:15304–15309
Williams RJP (1995) Bioenergetics. Purpose of proton pathways. Nature 376:643
Yakushiji E, Okunuki K (1941) Isolierung der a-Komponents des Cytochroms und ihre Eigenschaften. Proc Imp Acad Jpn 17:38–40
Yamashita E, Aoyama H, Yao M, Muramoto K et al (2005) Absolute configuration of the hydroxyfarnesylethyl group of haem A, determined by X-ray structural analysis of bovine heart cytochrome c oxidase using methods applicable at 2.8 Angstrom resolution. Acta Crystallogr D Biol Crystallogr D61:1373–1377
Yoshikawa S, O’Keeffe DH, Caughey WS (1985) Investigations of cyanide as an infrared probe of hemeprotein ligand binding sites. J Biol Chem 260:3518–3528
Yoshikawa S, Mochizuki M, Zhao XJ, Caughey WS (1995) Effects of overall oxidation state on infrared spectra of heme a 3 cyanide in bovine heart cytochrome c oxidase. Evidence of novel mechanistic roles for CuB. J Biol Chem 270:4270–4279
Yoshikawa S, Shinzawa-Itoh K, Nakashima R, Yaono R et al (1998) Redox-coupled crystal structural changes in bovine heart cytochrome c oxidase. Science 280:1723–1729
Yoshikawa S, Muramoto K, Shinzawa-Itoh K (2011) Proton-pumping mechanism of cytochrome c oxidase. Annu Rev Biophys 40:205–223
Acknowledgments
This work is supported in part by the Grant-in-Aid for Scientific Research 2247012 (S.Y.), the Targeted Protein Research Program, and the Global Center of Excellence Program, each provided by the Japanese Ministry of Education, Culture, Sports, Science and Technology. S.Y. is a Senior Visiting Scientist in the RIKEN Harima Institute.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer Science+Business Media, LLC
About this chapter
Cite this chapter
Yoshikawa, S., Muramoto, K., Shinzawa-Itoh, K. (2012). Reaction Mechanism of Mammalian Mitochondrial Cytochrome c Oxidase. In: Kadenbach, B. (eds) Mitochondrial Oxidative Phosphorylation. Advances in Experimental Medicine and Biology, vol 748. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-3573-0_9
Download citation
DOI: https://doi.org/10.1007/978-1-4614-3573-0_9
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4614-3572-3
Online ISBN: 978-1-4614-3573-0
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)