Mitochondrial electron transfer chain complexes inhibition by different organochalcogens

Aggregation and diffusion in the mitochondrial electron-transfer chain: role in electron flow and energy transfer.

tion in the nucleus. At I O T , a slow NC equilization of fluorescence but no nuclear accumulation was observed. Phycoerythrin is an intensely fluorescing macromolecule of 240 kDa. We observed that it did not permeate the nuclear envelope after injection into the cytoplasm or nucleus of HTC polykaryons. However, if NP was covalently attached to phycoerythrin the NP-phycoerythrin conjugate perme...

Electron Transfer in Porphyrin Complexes in Different Solvents

The electron transfer in different solvents is investigated for systems consisting of donor, bridge and acceptor. It is assumed that vibrational relaxation is much faster than the electron transfer. Electron transfer rates and final populations of the acceptor state are calculated numerically and in an approximate fashion analytically. In wide parameter regimes these solutions are in very good ...

Diminished inhibition of mitochondrial electron transfer from succinate to cytochrome c by thenoyltrifluoroacetone induced by antimycin.

Thenoyltrifluoroacetone inhibits succinate-cytochrome c reductase activity of resolved succinate*cytochrome c reductase complex. Dixon plots of [succinate-cytochrome c reductase activity]-’ or [succinateubiquinone reductase activity]-’ versus concentration of inhibitor are consistent with there being a single site of inhibition by thenoyltrifluoroacetone in resolved reductase complex. This agre...

Inhibition of mitochondrial electron transfer in rats by ethanethiol and methanethiol.

1. We have investigated the effects of ethanethiol, methanethiol and dimethyl sulphide on some metabolic processes of isolated rat hepatocytes, isolated mitochondria from liver and brain and ox-heart submitochondrial particles. 2. Ethanethiol, but not dimethyl sulphide, inhibited both gluconeogenesis and ureogenesis from various substrates in rat hepatocytes, depressed cellular ATP content and ...

Electron transfer between metal complexes: retrospective.