This protein is one of the nuclear-coded polypeptide chains of cytochrome c oxidase, the terminal oxidase
in mitochondrial electron transport.
Beside the biological functions, its cellular components include respiratory chain complex IV, intrinsic to membrane and plasma membrane part; whereas its molecular functions include heme-copper terminal oxidase
activity, transition metal ion binding, hydrogen ion transmembrane transporter activity etc.
Plastid terminal oxidase (PTOX) is a plastoquinol oxidase, which plays several important roles in plants.
Plastid terminal oxidase (PTOX), a thylakoid membrane-located quinol oxidase, exists widely in photosynthetic species including higher plants and algae (McDonald et al., 2011).
2), which act as the terminal oxidase of alternative pathway in mitochondria.
Sequences required for the activity of PTOX (IMMUTANS), a plastid terminal oxidase: in vitro and in planta mutagenesis of iron-binding sites and a conserved sequence that corresponds to Exon 8.
Flexibility in photosynthetic electron transport: the physiological role of plastoquinol terminal oxidase (PTOX).
The second activity is to act as a terminal oxidase
. Released energy is utilized to drive the enlargement phase of cell growth.
Alternative oxidase: an interkingdom perspective on the function and regulation of this broadly distributed 'cyanide-resistant' terminal oxidase
. Functional Plant Biology, Collingwood, v.35, n.10, p.535-552, 2008.
Cytochrome c oxidase, the terminal oxidase
in the respiratory chain, reduces oxygen to water through electron and proton transfer.
Complex II = succinate dehydrogenase complex; succinate; ubiquinone oxidoreductase; coenzyme Q reductase Complex III = cytochrome [bc.sub.l] complex;ferrocytochrome c oxidoreductase; coenzyme Q; cytochrome c reductase Complex IV = cytochrome oxidase; terminal oxidase
; ferrocytochrome c; oxygen oxidoreductase; cytochrome c oxidase.