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the complete release of respiratory control; the substitution of all coupled processes (ATP synthesis, transhydrogenation, reverse electron flow, active transport of cations, etc.) by a cyclic proton transport mediated by the uncoupler; the elimination of all protonic and cationic gradients generated across the mitochondrial or prokaryotic membrane
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 ...
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.
Once the H+ concentration gradient is established, a proton-motive force is established, which provides the energy to convert ADP to ATP. The H+ ions that were initially forced to one side of the mitochondrion membrane now naturally flow through a membrane protein called ATP synthase, a protein that converts ADP to ATP with the help of H+ ions. [1]
The process that converts the chemical energy of food into ATP (which can release energy) is not dependent on oxygen availability. During exercise , the supply and demand of oxygen available to muscle cells is affected by duration and intensity and by the individual's cardio respiratory fitness level. [ 1 ]
Metabolism (/ m ə ˈ t æ b ə l ɪ z ə m /, from Greek: μεταβολή metabolē, "change") is the set of life-sustaining chemical reactions in organisms.The three main functions of metabolism are: the conversion of the energy in food to energy available to run cellular processes; the conversion of food to building blocks of proteins, lipids, nucleic acids, and some carbohydrates; and the ...
UCPs contain the three homologous protein domains of MACPs. Although it was originally thought to play a role in non-shivering thermogenesis, obesity, diabetes and atherosclerosis, it now appears that the main function of UCP2 is the control of mitochondria-derived reactive oxygen species. [8] Chromosomal order is 5'-UCP3-UCP2-3'. [9]
Overview of the citric acid cycle. The citric acid cycle—also known as the Krebs cycle, Szent–Györgyi–Krebs cycle, or TCA cycle (tricarboxylic acid cycle) [1] [2] —is a series of biochemical reactions to release the energy stored in nutrients through the oxidation of acetyl-CoA derived from carbohydrates, fats, proteins, and alcohol.