Further studies on mevalonate phosphorylation in neonatal chick brain.
Mevalonate phosphorylation was studied in neonatal chick brain. Formation of phosphorylated derivatives of mevalonic acid increased with the pH in the range assays (5.5-9.5). Phosphomevalonate kinase was completely inactivated after treatment at 50 degree C for 5-10 min, whereas mevalonate kinase was found to retain its activity under the same conditions. Exposure to 65 degree C for 5 min resulted in the inactivation of mevalonate kinase. Both mevalonate-activating enzymes from chick brain were located primarily in the soluble fraction. The amounts of phosphomevalonic acid and pyrophosphomevalonic acid did not show a significant diurnal variation to suggest the presence of a circadian rhythm in either kinase. Cholesterol feeding and fasting had no effect on mevalonate phosphorylation by neonatal chick brain.[1]References
- Further studies on mevalonate phosphorylation in neonatal chick brain. Linares, A., Aguilera, J.A., García-Peregrín, E. Neurochem. Res. (1981) [Pubmed]
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