In plants, aquaporins regulate the water flow through membranes during growth, development and stress responses. We have isolated two isoforms of the aquaporin family from the protein-storage vacuoles of lentil (Lens culinaris Med.) seeds. Chemical cross-linking experiments showed that both isoforms belong to the same oligomer in the membrane and are phosphorylated by a membrane-bound protein kinase. We assigned the kinase activity to a 52kDa protein that is magnesium-dependent and calcium-regulated.
Lentil seed aquaporins form a hetero-oligomer which is phosphorylated by a Mg2+-dependent and Ca2+-regulated kinase
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Pol HARVENGT, Ariane VLERICK, Bruno FUKS, Ruddy WATTIEZ, Jean-Marie RUYSSCHAERT, Fabrice HOMBLE; Lentil seed aquaporins form a hetero-oligomer which is phosphorylated by a Mg2+-dependent and Ca2+-regulated kinase. Biochem J 15 November 2000; 352 (1): 183–190. doi: https://doi.org/10.1042/bj3520183
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