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Κυριακή 8 Απριλίου 2018

NDUFA4 (Renamed COXFA4) Is a Cytochrome-c Oxidase Subunit

Publication date: Available online 7 April 2018
Source:Trends in Endocrinology & Metabolism
Author(s): Robert D.S. Pitceathly, Jan-Willem Taanman
Groundbreaking work by Kadenbach and colleagues in the 1980s revealed the presence of 13 subunits in the mammalian mitochondrial cytochrome-c oxidase (COX; Complex IV). This observation stood the test of time until 2012 when it was demonstrated that NDUFA4, a polypeptide previously attributed to mitochondrial Complex I, was a 14th subunit of COX. In his recent opinion article, Kadenbach argued that NDUFA4 is not a subunit of COX. However, based on the findings that NDUFA4 deficiency results in a severe loss of COX activity and that NDUFA4 represents a stoichiometric component of the individual COX complex, we reason that NDUFA4 is a bona fide COX subunit and propose renaming it as COX subunit FA4 (COXFA4).



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