期刊
PLANT SCIENCE
卷 174, 期 4, 页码 432-445出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.plantsci.2008.01.001
关键词
co-localization; light activation; nearest-neighbor analysis; Pisum sativum; protein-protein interaction; thioredoxin
Immunocytolocalization experiments indicate that thioredoxin in is non-randomly distributed with respect to fructose bisphosohatase (EC 3.1.3.11), sedoheptulose bisphosphatase (EC 3.1.3.37), phosphoribulokinase (EC 2.7.1.19), NADP-linked glyceraldehyde-3-P dehydrogenase (EC 1.2.1.13), P-glycerate kinase (EC 2.7.2.3), aldolase (EC 4.1.2.13), ADP-glucose pyrophosphorylase (EC 2.7.7.27), NADP-dependent malate dehydrogenase (EC 1.1.1.82), ATP synthase (CF1, EC 3.6.1.34) and heat shock protein 70 (Hsp70) in pea leaf chloroplasts. Thioredoxin f is distributed non-randomly with respect to each of these enzymes and proteins except sedoheptulose bisphosphatase and the B subunit of glyceraldehyde-3-P dehydrogenase. These data, in combination with the results of binding experiments and activation assays reported by other laboratories, suggest that both thioredoxins may be involved in regulation of the activity of the light-activated Calvin cycle enzymes. Co-localization with enzymes not known to be light modulated is consistent with the notion that the thioredoxins might have some secondary function in the chloroplast, such as acting as linker proteins. (C) 2008 Elsevier Ireland Ltd. All rights reserved.
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