Calmodulin-dependent and calmodulin-independent glutamate decarboxylases in apple fruit
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چکیده
منابع مشابه
Calcium/calmodulin activation of two divergent glutamate decarboxylases from tobacco.
Glutamate decarboxylase (GAD, EC 4.1.1.15) catalyses the alpha-decarboxylation of glutamate to produce gamma-aminobutyrate (GABA). The nucleotide sequences of two divergent GADs (designated GAD1 and GAD3) were isolated from a Nicotiana tabacum L. cv. Samsun NN leaf cDNA library. Open reading frames indicated that GAD1 encodes a polypeptide of 496 amino acids and has greater than 99% identity wi...
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Translocation from the cytosol to the nucleus is a major response by calmodulin (CaM) to stimulation of cells by Ca2+. However, the mechanisms involved in this process are still controversial and both passive and facilitated diffusion have been put forward. We tested nuclear translocation mechanisms in electroporated HeLa cells, rat cortical neurons and glial cells using novel calmodulin and in...
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A calcium-dependent protein kinase activity from suspension-cultured soybean cells (Glycine max L. Wayne) was shown to be dependent on calcium but not calmodulin. The concentrations of free calcium required for half-maximal histone H1 phosphorylation and autophosphorylation were similar ( approximately 2 micromolar). The protein kinase activity was stimulated 100-fold by >/=10 micromolar-free c...
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Trypsin produces a dose-related increase in cellular cyclic AMP concentration in rat thymocytes [Shneyour, Patt & Trainin (1976) J. Immunol. 117, 2143-2149; Segal & Ingbar (1983) Clin. Res. 31, 277A]. In the present study, I examined whether this effect of trypsin requires Ca2+ and whether it is modified by calmodulin. In fresh thymocytes suspended in standard medium (containing 1 mM-Ca2+), try...
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filament preparations isolated from many different species. Incubation of crude and purified preparations of filaments with [f2P]ATP labels nearly all the filament proteins (Fig. l), the exception being the 65000-mol.wt. band of Loligo (Fig. la). Phosphorylation in vitro is mediated by a cyclic AMPand Ca2+-independent, and Mg2+-dependent, protein kinase. The enzyme is activated by Na+ and K+ an...
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ژورنال
عنوان ژورنال: BMC Plant Biology
سال: 2013
ISSN: 1471-2229
DOI: 10.1186/1471-2229-13-144