PMID- 17298220 OWN - NLM STAT- MEDLINE DCOM- 20070529 LR - 20220531 IS - 0862-8408 (Print) IS - 0862-8408 (Linking) VI - 55 Suppl 2 DP - 2006 TI - Biogenesis of eukaryotic cytochrome c oxidase. PG - S27-41 AB - Eukaryotic cytochrome c oxidase (CcO), the terminal component of the mitochondrial electron transport chain is a heterooligomeric complex that belongs to the superfamily of heme-copper containing terminal oxidases. The enzyme, composed of both mitochondrially and nuclear encoded subunits, is embedded in the inner mitochondrial membrane, where it catalyzes the transfer of electrons form reduced cytochrome c to dioxygen, coupling this reaction with vectorial proton pumping across the inner membrane. Due to the complexity of the enzyme, the biogenesis of CcO involves a multiplicity of steps, carried out by a number of highly specific gene products. These include mainly proteins that mediate the delivery and insertion of copper ions, synthesis and incorporation of heme moieties and membrane-insertion and topogenesis of constituent protein subunits. Isolated CcO deficiency represents one of the most frequently recognized causes of respiratory chain defects in humans, associated with severe, often fatal clinical phenotype. Here we review recent advancements in the understanding of this intricate process, with a focus on mammalian enzyme. FAU - Stiburek, L AU - Stiburek L AD - Department of Pediatrics, First Faculty of Medicine, Charles University, Prague, Czech Republic. FAU - Hansikova, H AU - Hansikova H FAU - Tesarova, M AU - Tesarova M FAU - Cerna, L AU - Cerna L FAU - Zeman, J AU - Zeman J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - Czech Republic TA - Physiol Res JT - Physiological research JID - 9112413 RN - 0 (Protein Subunits) RN - 42VZT0U6YR (Heme) RN - 789U1901C5 (Copper) RN - EC 1.9.3.1 (Electron Transport Complex IV) SB - IM MH - Animals MH - Copper/metabolism MH - Electron Transport MH - Electron Transport Complex IV/*chemistry/*metabolism MH - Heme/metabolism MH - Humans MH - Mitochondrial Membranes/enzymology/metabolism MH - Models, Biological MH - Protein Subunits/metabolism RF - 117 EDAT- 2007/02/15 09:00 MHDA- 2007/05/30 09:00 CRDT- 2007/02/15 09:00 PHST- 2007/02/15 09:00 [pubmed] PHST- 2007/05/30 09:00 [medline] PHST- 2007/02/15 09:00 [entrez] AID - 10.33549/physiolres.930000.55.S2.27 [doi] PST - ppublish SO - Physiol Res. 2006;55 Suppl 2:S27-41. doi: 10.33549/physiolres.930000.55.S2.27.