<p>Rawgel.</p>

Recently, an unexpected diversity in the composition of these complexes across unicellular eukaryotic lineages, with the apicomplexan parasites featuring prominently, has been revealed.

However, whether the observed enlarged and divergent mitochondrial complexes are conserved across the wider lineages has not been investigated. Here, using a complexome profiling proteomic approach, we have characterised the composition of the mitochondrial complexes of the myzozoan parasite of oysters, <i>Perkinsus marinus</i>. We show that it shares new components of ATP synthase and the mETC complexes that in the deadly apicomplexan <i>Plasmodium</i> and <i>Toxoplasma</i> were shown to be important for growth.