Inositol 1,4,5-Trisphosphate Induced Calcium Release from Corn Coleoptile Microsomes
- 1 March 1987
- journal article
- research article
- Published by Oxford University Press (OUP) in The Journal of Biochemistry
- Vol. 101 (3), 569-573
- https://doi.org/10.1093/jb/101.3.569
Abstract
The effect of inositol 1,4,5-trisphosphate (IP3) on Ca2+ release from microsomes of corn coleoptiles was investigated. Addition of micromolar concentrations of IP3 to Ca2+ loaded microsomes resulted in rapid release of 20–30% of sequestered Ca2+. Maximal and half maximal Ca2+. release occurred at 20 and 8 μM of IP3 respectively. Part of the Ca2+ released by IP3 was reaccumulated into microsomes within 4 min. The amount of Ca2+ released by IP3 was found to be dependent on free Ca2+ concentration in the incubation medium at the time of release. Maximum Ca2+ release was observed around 0.1 μM free Ca2+ concentration in the assay medium. These data suggest that IP3 might act as a second messenger in plants in a manner similar to animal systems by altering cytosolic levels of calcium.This publication has 21 references indexed in Scilit:
- Calmodulin inhibitor in senescing apples and its physiological and pharmacological significanceProceedings of the National Academy of Sciences, 1984
- myo-Inositol 1,4,5-trisphosphate. A second messenger for the hormonal mobilization of intracellular Ca2+ in liver.Journal of Biological Chemistry, 1984
- Calcium-Promoted Protein Phosphorylation in PlantsScience, 1984
- Calcium Ionophore A23187 Stimulates Cytokinin-Like Mitosis in FunariaScience, 1982
- ATP-Dependent Calcium Transport in Plasmalemma Preparations from Soybean HypocotylsPlant Physiology, 1982
- Response of Isolated Plant Membranes to Auxins: Calcium ReleaseBotanical Gazette, 1980
- Ca2+ transport in mitochondrial and microsomal fractions from higher plantsPlanta, 1980
- ATP-dependent Ca 2+ uptake into plant membrane vesiclesProceedings of the National Academy of Sciences, 1978
- Intracellular calcium release at fertilization in the sea urchin eggDevelopmental Biology, 1977
- A Rapid and Sensitive Method for the Quantitation of Microgram Quantities of Protein Utilizing the Principle of Protein-Dye BindingAnalytical Biochemistry, 1976