Abstract
The induction of glyoxylate cycle enzyme activities was revealed in the liver and other organs of starving rats. A five day deprivation of food was followed by the appearance of isocitrate lyase (ICL) and malate synthase activities and the increase of malate dehydrogenase (MDH) and citrate synthase activities. The induction of MDH was associated with the appearance of its new isoform with Rf 0.52. ICL activity was revealed in the liver, blood, pancreas, kidney, lungs, heart, and skeletal muscles of starving rats, reaching a peak on day 5 of food deprivation. No significant changes of blood glucose level in starving rats were revealed until day 9. A homogeneous ICL preparation with a specific activity of 12.4 IU per mg protein was obtained as the result of a five-stage purification procedure.
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