PMID- 33081639 OWN - NLM STAT- MEDLINE DCOM- 20210803 LR - 20210803 IS - 2046-2441 (Electronic) IS - 2046-2441 (Linking) VI - 10 IP - 10 DP - 2020 Oct TI - The aerobic mitochondrial ATP synthesis from a comprehensive point of view. PG - 200224 LID - 10.1098/rsob.200224 [doi] LID - 200224 AB - Most of the ATP to satisfy the energetic demands of the cell is produced by the F(1)F(o)-ATP synthase (ATP synthase) which can also function outside the mitochondria. Active oxidative phosphorylation (OxPhos) was shown to operate in the photoreceptor outer segment, myelin sheath, exosomes, microvesicles, cell plasma membranes and platelets. The mitochondria would possess the exclusive ability to assemble the OxPhos molecular machinery so to share it with the endoplasmic reticulum (ER) and eventually export the ability to aerobically synthesize ATP in true extra-mitochondrial districts. The ER lipid rafts expressing OxPhos components is indicative of the close contact of the two organelles, bearing different evolutionary origins, to maximize the OxPhos efficiency, exiting in molecular transfer from the mitochondria to the ER. This implies that its malfunctioning could trigger a generalized oxidative stress. This is consistent with the most recent interpretations of the evolutionary symbiotic process whose necessary prerequisite appears to be the presence of the internal membrane system inside the eukaryote precursor, of probable archaeal origin allowing the engulfing of the alpha-proteobacterial precursor of mitochondria. The process of OxPhos in myelin is here studied in depth. A model is provided contemplating the biface arrangement of the nanomotor ATP synthase in the myelin sheath. FAU - Morelli, Alessandro Maria AU - Morelli AM AD - Pharmacy Department (DIFAR), Biochemistry Laboratory, University of Genova, Viale Benedetto XV, 3, 16132 Genova, Italy. FAU - Ravera, Silvia AU - Ravera S AD - Experimental Medicine Department (DIMES), University of Genova, Via De Toni, 14, 16132 Genova, Italy. FAU - Panfoli, Isabella AU - Panfoli I AD - Pharmacy Department (DIFAR), Biochemistry Laboratory, University of Genova, Viale Benedetto XV, 3, 16132 Genova, Italy. LA - eng PT - Journal Article PT - Review DEP - 20201021 PL - England TA - Open Biol JT - Open biology JID - 101580419 RN - 0 (Membrane Proteins) RN - 0 (Protons) RN - 8L70Q75FXE (Adenosine Triphosphate) SB - IM MH - Adenosine Triphosphate/*biosynthesis MH - Animals MH - Endoplasmic Reticulum/metabolism MH - Energy Metabolism MH - Humans MH - Intracellular Membranes/metabolism MH - Membrane Proteins/chemistry/metabolism MH - Mitochondria/*metabolism MH - Myelin Sheath/metabolism MH - *Oxidative Phosphorylation MH - Oxidative Stress MH - Prokaryotic Cells/metabolism MH - Protons MH - Structure-Activity Relationship PMC - PMC7653358 OTO - NOTNLM OT - ATP synthase OT - endoplasmic reticulum OT - extra-mitochondrial OT - mitochondria OT - myelin OT - oxidative phosphorylation COIS- We declare we have no competing interests. EDAT- 2020/10/22 06:00 MHDA- 2021/08/04 06:00 PMCR- 2020/10/21 CRDT- 2020/10/21 05:37 PHST- 2020/10/21 05:37 [entrez] PHST- 2020/10/22 06:00 [pubmed] PHST- 2021/08/04 06:00 [medline] PHST- 2020/10/21 00:00 [pmc-release] AID - rsob200224 [pii] AID - 10.1098/rsob.200224 [doi] PST - ppublish SO - Open Biol. 2020 Oct;10(10):200224. doi: 10.1098/rsob.200224. Epub 2020 Oct 21.