NDUFV2 and schizophrenia: Focusing on the mitochondrial oxidative phosphorylation system (OXPHOS) in schizophrenia, revealed alterations in the enzymatic activities of complexes IV, II and I–III and in mRNA and protein levels of complex I subunits, NDUFV1 and NDUFV2, in post-mortem brain specimens [26], [29]–[32].