Purification and partial characterization of rat liver pyruvate dehydrogenase kinase activator protein (free pyruvate dehydrogenase kinase)
- 10 August 1992
- journal article
- Published by Wiley in FEBS Letters
- Vol. 308 (1) , 83-86
- https://doi.org/10.1016/0014-5793(92)81056-r
Abstract
Rat liver pyruvate dehydrogenase (PDH) kinase activator protein (KAP), a free PDH kinase readily separable from PDH complex and its intrinsic kinase, has been purified to apparent homogeneity from liver mitochondria of fed and 48-h starved rats. On SDS-PAGE an apparently single band of M , 45 kDa was obtained. N-Terminal amino acid sequence analyses (8–10 cycles) confirmed the presence of a single peptide in each case. The specific activity of the purified KAP from 48-h starved rats (14,413 U/mg protein) was 4.5-fold greater than that from fed rats.Keywords
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