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Keywords: oxidative phosphorylation
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Journal Articles
J Exp Biol (2022) 225 (12): jeb244230.
Published: 29 June 2022
... pathways with mitochondrial oxidative phosphorylation such that red carotenoid-based coloration is inextricably linked mitochondrial function. To test this hypothesis, we exposed Tigriopus californicus copepods to a mitochondrially targeted protonophore, 2,4-dinitrophenol (DNP), to induce proton leak...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (12): jeb242612.
Published: 28 June 2022
... changes in mitochondrial properties rather than muscle mass ( Barceló et al., 2017 ; Milbergue et al., 2018 ), then oxidative phosphorylation and/or LEAK in pectoralis muscle should be higher at −10°C than at 27°C and should correlate positively with M sum . We also expected that changes in metabolic...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (4): jeb237156.
Published: 16 February 2021
.... Mitochondrial respiration, including proton leak, the capacity for oxidative phosphorylation (OXPHOS), the maximum activity of the electron transport system (ETS), reactive oxygen species (ROS) production, and activity and oxygen affinity of cytochrome c oxidase (CCO) were assessed. Acclimation to constant...
Journal Articles
J Exp Biol (2020) 223 (21): jeb233684.
Published: 4 November 2020
... of mitochondrial oxidative phosphorylation were measured in permeabilized fibers and mitochondria from the pectoralis muscle. Mitochondrial ATP synthesis and coupling efficiency were measured in isolated muscle mitochondria. The mitochondrial activities of respiratory chain complexes and citrate synthase were also...
Journal Articles
J Exp Biol (2020) 223 (12): jeb223776.
Published: 17 June 2020
...: The stability of supercomplexes of mitochondrial electron transport chain complexes I and III varies among vertebrates and is greatest in poikilothermic reptiles and weakest in endotherms. Bioenergetics Complexomics Mass spectrometry Mitochondria Oxidative phosphorylation Reactive oxygen species...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (5): jeb215558.
Published: 11 March 2020
... by mammals to generate ATP or compensate for energetic losses dissipated as the form of heat (proton leak) during oxidative phosphorylation. Consequently, ATP synthesis and proton leak compete for the same electrochemical gradient. Because proton leak co-varies negatively with body mass, it is unknown...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (4): jeb216762.
Published: 19 February 2020
... the natural structure of gills and does not require mechanical separation. LEAK Oxidative phosphorylation Mitochondrion-rich cells Oxygraph Oxygen consumption Electron transport chain It has been known for a long time that fish gills are highly metabolically active – indeed, Keys...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (18): jeb207951.
Published: 12 September 2019
...Katrina Y. Scott; Rebecca Matthew; Jennifer Woolcock; Maise Silva; Hélène Lemieux ABSTRACT As the world's climate changes, life faces an evolving thermal environment. Mitochondrial oxidative phosphorylation (OXPHOS) is critical to ensure sufficient cellular energy production, and it is strongly...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (10): jeb194969.
Published: 16 May 2019
... shows major modifications in offspring liver and muscle mitochondria. Endurance training Intrauterine environment Oxidative phosphorylation Offspring The prenatal environment is widely considered to have a major impact on fetus development ( Barker, 1998 ; Barker and Osmond, 1986...
Journal Articles
J Exp Biol (2019) 222 (4): jeb196188.
Published: 27 February 2019
...). This was carried out at different steady-state rates of oxidative phosphorylation in both pectoralis (glycolytic) and gastrocnemius (oxidative) muscles. Fasting induced a decrease in the rates of oxidative phosphorylation and maximal ROS release. These changes were completely reversed by 3 days of refeeding. Yet...
Journal Articles
J Exp Biol (2018) 221 (4): jeb172213.
Published: 14 February 2018
... and an upregulation of oxidative phosphorylation efficiency. The aim of this study was to decipher mechanisms underlying the increased mitochondrial coupling efficiency reported in fasted birds. Mitochondrial oxidative phosphorylation activity, efficiency and membrane potential were measured in mitochondria isolated...
Journal Articles
J Exp Biol (2017) 220 (13): 2445–2451.
Published: 1 July 2017
... bioenergetics in king penguin ( Aptenodytes patagonicus ) chicks. Rates of mitochondrial oxidative phosphorylation were measured in pectoralis permeabilized fibres and isolated mitochondria. Mitochondrial ATP synthesis efficiency and the activities of respiratory chain complexes were measured in mitochondria...
Journal Articles
J Exp Biol (2017) 220 (8): 1459–1471.
Published: 15 April 2017
... in killifish, which suggests that organismal performance at thermal extremes is, at least in part, constrained by mitochondrial performance. Killifish Thermal performance Oxidative phosphorylation Local adaptation Temperature Fish Ambient temperature ( T a ) constrains whole-organism...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (19): 3019–3027.
Published: 1 October 2016
... of metabolic genes in response to a decrease in body temperature. Mitochondria Oxidative phosphorylation Goldfish Thermal acclimation Bioenergetics Nuclear respiratory factor 1 The ability to increase mitochondrial content in response to energy stress is an important capacity, enabling...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (8): 1214–1223.
Published: 15 April 2016
... and thigh skeletal muscle grew at faster rates than the rest of the body as the animals transitioned from an externally pipped paranate to a hatchling. Large changes in oxidative phosphorylation capacity occurred during ontogeny in both thigh muscles, the primary site of shivering, and cardiac ventricles...
Journal Articles
J Exp Biol (2014) 217 (13): 2348–2357.
Published: 1 July 2014
... Fish Thermal limits Cardiac mitochondria Heart failure Oxidative phosphorylation Critical environmental stressors can affect the dynamics and distribution of fish populations ( Booth et al., 2011 ; Sunday et al., 2012 ). Currently, ocean temperatures are influenced by climate change...
Journal Articles
J Exp Biol (2014) 217 (12): 2032–2036.
Published: 15 June 2014
... appears to be invoked quickly during entrance into torpor when body temperature is high, but is reversed slowly during arousal when body temperature is low. This pattern may reflect body temperature-sensitive, enzyme-mediated post-translational modifications of oxidative phosphorylation complexes...
Journal Articles
J Exp Biol (2013) 216 (17): 3283–3293.
Published: 1 September 2013
... and F is the Faraday constant), b is a binding constant used to correct for nonspecific binding of TPP, and v is the mitochondrial matrix volume. mitochondria turtle heart proton conductance anoxia hypoxia electron transport chain oxidative phosphorylation Mitochondria...
Journal Articles
J Exp Biol (2008) 211 (16): 2689–2699.
Published: 15 August 2008
... shown to change acutely between hibernation and arousal( Pehowich, 1994 ); if this occurs in mitochondria as well, it could have profound consequences for oxidative phosphorylation. Dietary PUFA might constrain the degree to which membranes can be acutely remodeled. Fig. 7. Substrate oxidation...
Journal Articles
J Exp Biol (2005) 208 (3): 515–522.
Published: 1 February 2005
... 2005 anemia skeletal muscle oxidative phosphorylation energy metabolism Many different physiological and environmental stimuli induce mitochondrial proliferation in vertebrate muscles (see Hood, 2001 ; Moyes and Hood, 2003 ). Regulation of mitochondrial biogenesis may be mediated...