Decrease of oxidative activities in brown adipose tissue mitochondria of cold acclimated rats on short term exposure to heat stress

Gaikwad, Amos; Ramasarma, T.; Kurup, C. K. Ramakrishna

doi:10.1016/0005-2728(90)90191-6

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Cited by 7 publications

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Brown adipose tissue mitochondria are cytochrome c ? subsaturated

1991

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The oxidative activity of mitochondria freshly isolated from brown adipose tissue of rats was stimulated two-fold on the addition of small concentrations of exogenous cytochrome c to the reaction medium. Loss of membrane-bound cytochrome c did not occur during isolation of mitochondria. Estimation of the high-affinity binding sites on the organelle membrane indicated that less than a third of these sites remained saturated with cytochrome c. The pigment is thus shown to be a functionally limiting electron transport component in brown adipose tissue.

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