Title : Brain-Specific Serine-47 Modification of Cytochrome c Regulates Cytochrome c Oxidase Activity Attenuating ROS Production and Cell Death: Implications for Ischemia/Reperfusion Injury and Akt Signaling.

Pub. Date : 2020 Aug 6

PMID : 32781572






6 Functional Relationships(s)
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1 Brain-Specific Serine-47 Modification of Cytochrome c Regulates Cytochrome c Oxidase Activity Attenuating ROS Production and Cell Death: Implications for Ischemia/Reperfusion Injury and Akt Signaling. Reactive Oxygen Species cytochrome c, somatic Homo sapiens
2 Our results show that S47E Cytc results in partial inhibition of mitochondrial respiration corresponding with lower mitochondrial membrane potentials (DeltaPsim) and reduced reactive oxygen species (ROS) production. Reactive Oxygen Species cytochrome c, somatic Homo sapiens
3 Our results show that S47E Cytc results in partial inhibition of mitochondrial respiration corresponding with lower mitochondrial membrane potentials (DeltaPsim) and reduced reactive oxygen species (ROS) production. Reactive Oxygen Species cytochrome c, somatic Homo sapiens
4 When exposed to an oxygen-glucose deprivation/reoxygenation (OGD/R) model simulating ischemia/reperfusion injury, the Cytc S47E phosphomimetic cell line showed minimal ROS generation compared to the unphosphorylated WT Cytc cell line that generated high levels of ROS upon reoxygenation. Reactive Oxygen Species cytochrome c, somatic Homo sapiens
5 When exposed to an oxygen-glucose deprivation/reoxygenation (OGD/R) model simulating ischemia/reperfusion injury, the Cytc S47E phosphomimetic cell line showed minimal ROS generation compared to the unphosphorylated WT Cytc cell line that generated high levels of ROS upon reoxygenation. Reactive Oxygen Species cytochrome c, somatic Homo sapiens
6 Overall, our results suggest that loss of S47 phosphorylation of Cytc during brain ischemia drives reperfusion injury through maximal electron transport chain flux, DeltaPsim hyperpolarization, and ROS-triggered cell death. Reactive Oxygen Species cytochrome c, somatic Homo sapiens