Reversible Redox of NADH and NAD+ at a Hybrid Lipid Bilayer Membrane Using Ubiquinone
摘要:
Here, we report the reversible interconversion between NADH and NAD(+) at a low overpotential, which is in part mediated by ubiquinone embedded in a biomimetic membrane to mimic the initial stages of respiration. This system can be used as a platform to examine biologically relevant electroactive molecules embedded in a natural membrane environment and provide new insights into the mechanism of biological redox cycling.
Reversible Redox of NADH and NAD+ at a Hybrid Lipid Bilayer Membrane Using Ubiquinone
摘要:
Here, we report the reversible interconversion between NADH and NAD(+) at a low overpotential, which is in part mediated by ubiquinone embedded in a biomimetic membrane to mimic the initial stages of respiration. This system can be used as a platform to examine biologically relevant electroactive molecules embedded in a natural membrane environment and provide new insights into the mechanism of biological redox cycling.
All aromatic C–H bonds of triphenylphosphine (PPh3) were efficiently replaced by C–D bonds using Ru/C and Ir/C co-catalysts in 2-PrOH and D2O, an inexpensive deuterium source.
Synthesis and characterization of mitoQ and idebenone analogues as mediators of oxygen consumption in mitochondria
作者:Damien Y. Duveau、Pablo M. Arce、Robert A. Schoenfeld、Nidhi Raghav、Gino A. Cortopassi、Sidney M. Hecht
DOI:10.1016/j.bmc.2010.06.104
日期:2010.9
Analogues of mitoQ and idebenone were synthesized to define the structural elements that support oxygen consumption in the mitochondrial respiratory chain. Eight analogues were prepared and fully characterized, then evaluated for their ability to support oxygen consumption in the mitochondrial respiratory chain. While oxygen consumption was strongly inhibited by mitoQ analogues 2-4 in a chain length-dependent manner, modification of idebenone by replacement of the quinone methoxy groups by methyl groups (analogues 6-8) reduced, but did not eliminate, oxygen consumption. Idebenone analogues 6-8 also displayed significant cytoprotective properties toward cultured mammalian cells in which glutathione had been depleted by treatment with diethyl maleate. (C) 2010 Elsevier Ltd. All rights reserved.
Reversible Redox of NADH and NAD<sup>+</sup> at a Hybrid Lipid Bilayer Membrane Using Ubiquinone
作者:Wei Ma、Da-Wei Li、Todd C. Sutherland、Yang Li、Yi-Tao Long、Hong-Yuan Chen
DOI:10.1021/ja204014s
日期:2011.8.17
Here, we report the reversible interconversion between NADH and NAD(+) at a low overpotential, which is in part mediated by ubiquinone embedded in a biomimetic membrane to mimic the initial stages of respiration. This system can be used as a platform to examine biologically relevant electroactive molecules embedded in a natural membrane environment and provide new insights into the mechanism of biological redox cycling.