期刊
FEBS LETTERS
卷 505, 期 1, 页码 53-56出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0014-5793(01)02772-7
关键词
proton leak; subsarcolemmal; intermyofibrillar mitochondrion; fasting; uncoupling protein 3
We have investigated the effect of 24-h fasting on basal proton leak and uncoupling protein (UCP) 3 expression at the protein level in subsarcolemmal and intermyofibrillar skeletal muscle mitochondria. In fed rats, the two mitochondrial populations displayed different proton leak, but the same protein content of UCP3. In addition, 24-h fasting, both at 24 and 29 degreesC, induced an increase in proton leak only in subsarcolemmal mitochondria, while UCP3 content increased in both the populations. From the present data, it appears that UCP3 does not control the basal proton leak of skeletal muscle mitochondria. (C) 2001 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved.
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