Nucleus-Encoded Light-Harvesting Chlorophyll a/b Proteins are Imported Normally into Chlorophyll b-Free Chloroplasts of Arabidopsis
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منابع مشابه
Deletion Mutants of Chlorophyll a/b Binding Proteins Are Efficiently Imported into Chloroplasts but Do Not Integrate into Thylakoid Membranes.
Chlorophyll a/b binding polypeptides (CABp) are integral thylakoid membrane proteins containing three membrane-spanning helices. We have created a series of mutations in tomato CABp to test whether individual membrane helices with hydrophilic flanking sequences, when fused to a transit peptide, can be imported into chloroplasts and correctly targeted to thylakoid membranes. All of the mutated p...
متن کاملThe light-harvesting chlorophyll a/b-binding proteins.
Photosynthetic light harvesting in plants is regulated by phosphorylation-driven state transitions: functional redistributions of the major trimeric light-harvesting complex II (LHCII) to balance the relative excitation of photosystem I and photosystem II. State transitions are driven by reversible LHCII phosphorylation by the STN7 kinase and PPH1/TAP38 phosphatase. LHCII trimers are composed o...
متن کاملLight-harvesting chlorophyll a/b-binding proteins are required for stomatal response to abscisic acid in Arabidopsis
The light-harvesting chlorophyll a/b binding proteins (LHCB) are perhaps the most abundant membrane proteins in nature. It is reported here that the down-regulation or disruption of any member of the LHCB family, LHCB1, LHCB2, LHCB3, LHCB4, LHCB5, or LHCB6, reduces responsiveness of stomatal movement to ABA, and therefore results in a decrease in plant tolerance to drought stress in Arabidopsis...
متن کاملPhotosynthesis and phosphorylation of light-harvesting chlorophyll a/b-protein in intact chloroplasts Effects of uncouplers
Protein phosphorylation in isolated, intact pea chloroplasts was measured during the onset of COZ-dependent 02 evolution. Total incorporation of 32P (from 32Pi) into light-harvesting chlorophyll a/b-protein was found to be less sensitive than 02 evolution to inhibition by the uncouplers FCCP and NH&l. It is concluded that changes in the rate of ATP synthesis cannot affect protein phosphorylatio...
متن کاملChloramphenicol stimulation of light harvesting chlorophyll protein complex accumulation in a chlorophyll B deficient wheat mutant.
As compared with normal wheat leaves, the chlorina wheat mutant, designated CD3, has a high chlorophyll a/b ratio and a deficiency in the light harvesting chlorophyll protein (LHCP) complex. Applications of 200 micrograms per milliliter of d-threo-chloramphenicol to etiolated seedlings decreased the chlorophyll a/b ratio and increased the accumulation of the 27 kilodalton LHCP polypeptide and t...
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ژورنال
عنوان ژورنال: Molecular Plant
سال: 2013
ISSN: 1674-2052
DOI: 10.1093/mp/sss113