Levchenko 2016 Biochim Biophys Acta

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Levchenko M, Wuttke JM, Römpler K, Schmidt B, Neifer K, Juris L, Wissel M, Rehling P, Deckers M (2016) Cox26 is a novel stoichiometric subunit of the yeast cytochrome c oxidase. Biochim Biophys Acta 1863:1624-32.

» PMID: 27083394

Levchenko M, Wuttke JM, Roempler K, Schmidt B, Neifer K, Juris L, Wissel M, Rehling P, Deckers M (2016) Biochim Biophys Acta

Abstract: The cytochrome c oxidase (COX) is the terminal enzyme of the respiratory chain. The complex accepts electrons from cytochrome c and passes them onto molecular oxygen. This process contributes to energy capture in the form of a membrane potential across the inner membrane. The enzyme complex assembles in a stepwise process from the three mitochondria-encoded core subunits Cox1, Cox2 and Cox3, which associate with nuclear-encoded subunits and cofactors. In the yeast Saccharomyces cerevisiae, the cytochrome c oxidase associates with the bc1-complex into supercomplexes, allowing efficient energy transduction. Here we report on Cox26 as a protein found in respiratory chain supercomplexes containing cytochrome c oxidase. Our analyses reveal Cox26 as a novel stoichiometric structural subunit of the cytochrome c oxidase. A loss of Cox26 affects cytochrome c oxidase activity and respirasome organization.

Copyright © 2016 Elsevier B.V. All rights reserved.


Labels: MiParea: Respiration, Genetic knockout;overexpression 


Organism: Saccharomyces cerevisiae 

Preparation: Isolated mitochondria  Enzyme: Complex IV;cytochrome c oxidase, Complex V;ATP synthase, Supercomplex 

Coupling state: OXPHOS 

HRR: Oxygraph-2k