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Mitochondrial uncoupling proteins (UCP) are members of the larger family of mitochondrial anion carrier proteins (MACP). UCPs separate oxidative phosphorylation from ATP synthesis with energy dissipated as heat, also referred to as the mitochondrial proton leak.
Mitochondrial uncoupling proteins (UCP) are members of the larger family of mitochondrial anion carrier proteins (MACP). UCPs separate, or uncouple, oxidative phosphorylation from ATP synthesis by dissipating the mitochondrial membrane potential as heat, also referred to as the mitochondrial proton leak.
Mitochondrial uncoupling proteins (UCP) are members of the larger family of mitochondrial anion carrier proteins (MACP). UCPs separate oxidative phosphorylation from ATP synthesis with energy dissipated as heat, also referred to as the mitochondrial proton leak.
Structure of the human uncoupling protein UCP1. An uncoupling protein (UCP) is a mitochondrial inner membrane protein that is a regulated proton channel or transporter.An uncoupling protein is thus capable of dissipating the proton gradient generated by NADH-powered pumping of protons from the mitochondrial matrix to the mitochondrial intermembrane space.
22227 Ensembl ENSG00000109424 ENSMUSG00000031710 UniProt P25874 P12242 RefSeq (mRNA) NM_021833 NM_009463 RefSeq (protein) NP_068605 NP_033489 Location (UCSC) Chr 4: 140.56 – 140.57 Mb Chr 8: 84.02 – 84.03 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Thermogenin (called uncoupling protein by its discoverers and now known as uncoupling protein 1, or UCP1) is a mitochondrial ...
This will lead to protons leaking through the inner mitochondrial membrane without complexes I, III, and IV pushing protons back through to maintain the proton gradient. There is also electron leak (an event where electrons leak out of the electron transport chain), which happens because NADH dehydrogenase within Complex I becomes damaged ...
This process is known as proton leak or mitochondrial uncoupling and is due to the facilitated diffusion of protons into the matrix. The process results in the unharnessed potential energy of the proton electrochemical gradient being released as heat. [ 21 ]
It dissipates the proton gradient across the mitochondrial membrane, collapsing the proton motive force that the cell uses to produce most of its ATP chemical energy. Instead of producing ATP, the energy of the proton gradient is lost as heat. [17] The inefficiency is proportional to the dose of DNP that is taken.