منابع مشابه
The chromophore of phytochrome.
The chromophore of phytochrome, the plant photomorphogenic pigment, was cleaved from the associated protein. Chromatographic and spectral properties indicated that it was a bilitriene closely similar to but distinct from the chromophore of C-phycocyanin and allophycocyanin.
متن کاملMultiple heme oxygenase family members contribute to the biosynthesis of the phytochrome chromophore in Arabidopsis.
The oxidative cleavage of heme by heme oxygenases (HOs) to form biliverdin IXalpha (BV) is the committed step in the biosynthesis of the phytochrome (phy) chromophore and thus essential for proper photomorphogenesis in plants. Arabidopsis (Arabidopsis thaliana) contains four possible HO genes (HY1, HO2-4). Genetic analysis of the HY1 locus showed previously that it is the major source of BV wit...
متن کاملBiosynthesis of Actinomycin Chromophore
substance was also hydrolyzed lvith acid to split vinyl ethers (13). The products were partitioned between ether and water and cr-glycols determined in each phase. Saponification released considerable amounts of glycerol (Table I, 3b). Thus Eluate C1 from the silicic acid column apparently still contained some ester triglycerides. The ether-soluble fraction contained glycols which yielded on ac...
متن کاملIn vitro assembly of phytochrome B apoprotein with synthetic analogs of the phytochrome chromophore.
Phytochrome B (PhyB), one of the major photosensory chromoproteins in plants, mediates a variety of light-responsive developmental processes in a photoreversible manner. To analyze the structural requirements of the chromophore for the spectral properties of PhyB, we have designed and chemically synthesized 20 analogs of the linear tetrapyrrole (bilin) chromophore and reconstituted them with Ph...
متن کاملSynthesis of phytochrome apoprotein and chromophore are not coupled obligatorily.
G Gardner and HL Gorton (1985 Plant Physiol 77: 540) demonstrated that gabaculine (5-amino-1,3-cyclohexadienylcarboxylic acid) inhibits the initial synthesis and resynthesis of spectrophotometrically detectable phytochrome in pea, maize, and oat. We show that the level of immuno-detectable phytochrome in pea is unaffected by the presence of gabaculine at a concentration that reduces spectrophot...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1989
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(17)31241-3