DOI: 10.1016/0014-5793(84)80927-8. Increase in the level of thylakoid protein phosphorylation in maize mesophyll chloroplasts by decrease in the transthylakoid pH gradient

Increase in the level of thylakoid protein phosphorylation in maize mesophyll chloroplasts by decrease in the transthylakoid pH gradient

10.1016/0014-5793(84)80927-8

Crossref journal-article

Wiley

FEBS Letters (311)

Abstract

Phosphorylation of the light‐harvesting chlorophyll protein (LHCP) has been measured in intact chloroplasts prepared from maize mesophyll protoplasts. Maximum levels of phosphorylation were obtained in the absence of added reducible photosynthetic substrate and the presence of low concentrations of the ΔpH dissipating ionophore, nigericin. Assays of chlorophyll fluorescence indicated a high reduction level of plastoquinone under these conditions. It is suggested that the size of the transthylakoid pH gradient exerts control over the redox activation of the protein kinase and that protein phosphorylation is involved in the regulation of cyclic and non‐cyclic electron flow. Further evidence for this view was obtained from stimulation of protein phosphorylation by pyruvate which lowers ΔpH by ATP consumption and by inhibition of phosphorylation in strong light and by low levels of DCMU.

Bibliography

Fernyhough, P., Foyer, C. H., & Horton, P. (1984). Increase in the level of thylakoid protein phosphorylation in maize mesophyll chloroplasts by decrease in the transthylakoid pH gradient. FEBS Letters, 176(1), 133â138. Portico.

Authors 3

P. Fernyhough (first)
C.H. Foyer (additional)
P. Horton (additional)

References 15 Referenced 54

10.1016/0014-5793(83)80479-7
10.1016/0014-5793(80)81016-7
10.1016/0014-5793(81)80716-8
10.1038/291001a0
10.1016/0005-2728(81)90239-5
10.1016/0005-2728(83)90235-9
10.1016/0014-5793(82)80245-7
10.1080/07352688309382169
10.1098/rspb.1983.0018
10.1016/0005-2728(79)90160-9
{'key': 'e_1_2_1_12_1', 'first-page': '52534', 'volume': '77', 'author': 'Bennett J.', 'year': '1980', 'journal-title': 'Proc. Natl. Acad. Sci. USA'} / Proc. Natl. Acad. Sci. USA by Bennett J. (1980)
10.1016/0005-2728(78)90178-0
{'key': 'e_1_2_1_14_1', 'author': 'Ridley S.M.', 'year': '1984', 'journal-title': 'Z. Pflanzenphysiol.'} / Z. Pflanzenphysiol. by Ridley S.M. (1984)
10.1016/0005-2728(83)90165-2
{'key': 'e_1_2_1_16_1', 'first-page': '245', 'volume-title': 'Chemiosmotic Proton Circuits in Biological Membranes', 'author': 'Crowther D.', 'year': '1981'} / Chemiosmotic Proton Circuits in Biological Membranes by Crowther D. (1981)

Dates

Type	When
Created	23 years ago (July 25, 2002, 3:58 a.m.)
Deposited	1 year, 11 months ago (Sept. 16, 2023, 11:20 p.m.)
Indexed	44 minutes ago (Aug. 23, 2025, 4:34 p.m.)
Issued	40 years, 10 months ago (Oct. 15, 1984)
Published	40 years, 10 months ago (Oct. 15, 1984)
Published Online	23 years, 9 months ago (Nov. 1, 2001)
Published Print	40 years, 10 months ago (Oct. 15, 1984)

Funders 0

None

BibTeX

@article{Fernyhough_1984, title={Increase in the level of thylakoid protein phosphorylation in maize mesophyll chloroplasts by decrease in the transthylakoid pH gradient}, volume={176}, ISSN={1873-3468}, url={http://dx.doi.org/10.1016/0014-5793(84)80927-8}, DOI={10.1016/0014-5793(84)80927-8}, number={1}, journal={FEBS Letters}, publisher={Wiley}, author={Fernyhough, P. and Foyer, C.H. and Horton, P.}, year={1984}, month=oct, pages={133–138} }

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