Phytochrome and calcium stimulation of protein phosphorylation in isolated pea nuclei.
The phosphorylation of several proteins in pea nuclei was promoted by Ca2+ and by red light. The red light-induced stimulation was reversed by far-red light, indicating that the photoreceptor modulating this response was the photochromic pigment, phytochrome. Both the red light and the Ca2+-promoted enhancement of phosphorylation were inhibited by the calcium chelator, ethylene glycol bis(beta-aminoethyl ether) N, N'-tetraacetic acid, and by the calmodulin inhibitors, chlorpromazine and compound 48/80.
D002118:Calcium / Q000494:pharmacology*; D007887:Fabaceae / Q000378:metabolism; D008027:Light; D009698:Nucleoproteins / Q000378:metabolism; D010766:Phosphorylation; D010834:Phytochrome / Q000494:pharmacology*; D010940:Plant Proteins / Q000378:metabolism* / Q000494:pharmacology*; D010946:Plants, Medicinal
D009698:Nucleoproteins; D010940:Plant Proteins; D010834:Phytochrome; D002118:Calcium