A2 Review article in a scientific journal

Posttranslational Modifications of Chloroplast Proteins: An Emerging Field




List of Authors: Nina Lehtimäki, Minna M. Koskela, and Paula Mulo

Publisher: AMER SOC PLANT BIOLOGISTS

Publication year: 2015

Journal: Plant Physiology

Journal name in source: PLANT PHYSIOLOGY

Journal acronym: PLANT PHYSIOL

Volume number: 168

Issue number: 3

Number of pages: 8

ISSN: 0032-0889

DOI: http://dx.doi.org/10.1104/pp.15.00117


Abstract

Posttranslational modifications of proteins are key effectors of enzyme activity, protein interactions, targeting, and turnover rate, but despite their importance, they are still poorly understood in plants. Although numerous reports have revealed the regulatory role of protein phosphorylation in photosynthesis, various other protein modifications have been identified in chloroplasts only recently. It is known that posttranslational Na-acetylation occurs in both nuclear-and plastid-encoded chloroplast proteins, but the physiological significance of this acetylation is not yet understood. Lysine acetylation affects the localization and activity of key metabolic enzymes, and it may work antagonistically or cooperatively with lysine methylation, which also occurs in chloroplasts. In addition, tyrosine nitration may help regulate the repair cycle of photosystem II, while N-glycosylation determines enzyme activity of chloroplastic carbonic anhydrase. This review summarizes the progress in the research field of posttranslational modifications of chloroplast proteins and points out the importance of these modifications in the regulation of chloroplast metabolism.



Last updated on 2021-24-06 at 09:31