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The N-terminal domain of the light-harvesting chlorophyll a/b-binding protein complex (LHCII) is essential for its acclimative proteolysis
Linköping University, Faculty of Health Sciences. Linköping University, Department of Biomedicine and Surgery, Cell biology.
2000 (English)In: FEBS Letters, ISSN 0014-5793, Vol. 466, no 2-3, 385-388 p.Article in journal (Refereed) Published
Abstract [en]

Variations in the amount of the light-harvesting chlorophyll a/b-binding protein complex (LHCII) is essential for regulation of the uptake of light into photosystem II. An endogenous proteolytic system was found to be involved in the degradation of LHCII in response to elevated light intensities and the proteolysis was shown to be under tight regulation [Yang, D.-H. et al. (1998) Plant Physiol. 118, 827-834]. In this study, the substrate specificity and recognition site towards the protease were examined using reconstituted wild-type and mutant recombinant LHCII. The results show that the LHCII apoprotein and the monomeric form of the holoprotein are targeted for proteolysis while the trimeric form is not. The N-terminal domain of LHCII was found to be essential for recognition by the regulatory protease and the involvement of the N-end rule pathway is discussed. (C) 2000 Federation of European Biochemical Societies.

Place, publisher, year, edition, pages
2000. Vol. 466, no 2-3, 385-388 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-24859DOI: 10.1016/S0014-5793(00)01107-8Local ID: 9261OAI: diva2:245182
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2011-01-14

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