1.1.1.294: chlorophyll(ide) b reductase
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For detailed information about chlorophyll(ide) b reductase, go to the full flat file.
Word Map on EC 1.1.1.294
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1.1.1.294
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stay-green
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oxygenase
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light-harvesting
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pheophorbide
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7-hydroxymethyl
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dark-induced
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thylakoids
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ryegrass
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lhcii
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lolium
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perenne
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perennial
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etioplasts
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grana
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pheophytinase
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pao
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chlorophyll-binding
- 1.1.1.294
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stay-green
- oxygenase
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light-harvesting
- pheophorbide
-
7-hydroxymethyl
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dark-induced
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thylakoids
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ryegrass
- lhcii
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lolium
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perenne
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perennial
- etioplasts
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grana
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pheophytinase
- pao
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chlorophyll-binding
Reaction
Synonyms
BoNYC1, CBR, Chl b reductase, chlorophyll b reductase, chlorophyll(ide) b reductase, LpNYC1, More, NOL, NON-YELLOW COLORING 1, NON-YELLOW COLORING1, NYC-like, NYC1, NYC1-LIKE
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Engineering
Engineering on EC 1.1.1.294 - chlorophyll(ide) b reductase
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P360S
mutation changes the 3D structure of the NADPH binding site, leading to delays in postharvest degreening
additional information
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a double mutant constructed between nyc1 and cao (enzyme for chlorophyll b biosynthesis) fails to display a stay-green phenotype during dark-induced senescence
additional information
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Arabidopsis nol/nyc1 double mutant, when the genes for chlorophyll b reductases NOL and NYC1 are disrupted, chlorophyll b and photosystem II are not degraded during senescence, whereas other pigment complexes completely disappear
additional information
a mutation producing a termination codon, and a mutation interfering with correct intron splicing both lead to delays in postharvest degreening
additional information
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analysis of expression of a gene encoding a putative CBR (BoNYC1) during postharvest senescence of broccoli and of effects of postharvest physical treatements, overview
additional information
the non-yellow coloring, nyc1, recessive mutant is a rice stay-green phenotype mutant due to a defect in chlorophyl degradation, in which chlorophyll degradation during senescence is impaired, the mutant NYC1 does not show chlorophyll b reductase activity, but NOL, i.e. NYC1-like, a protein closely related to NYC1 in rice, shows chlorophyll b reductase activity in vitro, phenotype, overview, a double mutant from a cross between nyc1-2 and a chlorophyll b-deficient mutant cao-2 does not show the stay-green senescence phenotype, overview
additional information
the non-yellow coloring, nyc1, recessive mutant is a rice stay-green phenotype mutant due to a defect in chlorophyl degradation, in which chlorophyll degradation during senescence is impaired, the mutant NYC1 does not show chlorophyll b reductase activity, but NOL, i.e. NYC1-like, a protein closely related to NYC1 in rice, shows chlorophyll b reductase activity in vitro, phenotype, overview, a double mutant from a cross between nyc1-2 and a chlorophyll b-deficient mutant cao-2 does not show the stay-green senescence phenotype, overview
additional information
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the non-yellow coloring, nyc1, recessive mutant is a rice stay-green phenotype mutant due to a defect in chlorophyl degradation, in which chlorophyll degradation during senescence is impaired, the mutant NYC1 does not show chlorophyll b reductase activity, but NOL, i.e. NYC1-like, a protein closely related to NYC1 in rice, shows chlorophyll b reductase activity in vitro, phenotype, overview, a double mutant from a cross between nyc1-2 and a chlorophyll b-deficient mutant cao-2 does not show the stay-green senescence phenotype, overview
additional information
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nyc1 mutant, shows the stay-green phenotype. Nol mutant (lines G079-11B, C130-10H and G087-9H) shows a stay-green phenotype very similar to that of the nyc1 mutant, i.e. the degradation of chlorophyll b is severely inhibited and light-harvesting complex II is selectively retained during senescence, resulting in the retention of thylakoid grana even at a late stage of senescence. The nyc1 nol double mutant does not show prominent enhancement of inhibition of chlorophyll degradation
additional information
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nyc1-mutant is a stay-green mutant. The double mutant nyc1/nol only slightly enhances the corresponding single mutant phenotypes