Total RNA was isolated from the upper 5 mm of the coleoptile tip using the method of Chomczynski et al. The difference is caused by several stretches of amino acids near the N terminus present in the Arabidopsis but not in the oat proteins. This coincidence supports the previous assumption that the NPH1 gene encodes the phosphoprotein that had been correlated with phototropism. Mutations in the NPH1 locus of Arabidopsis disrupt the perception of phototropic stimuli.
Blue light activates a specific protein kinase in higher plants.
The transduction of blue light signals in higher plants.