Abstract
The assembly of the photosynthetic units depends on close cooperation of the genetic information of the nuclear and plastid genome. The plastome coded reaction center apoproteins are cotranslationaly inserted into the membrane, while the nuclear-coded light-harvesting apoproteins, after synthesis on cytoplasmic ribosomes, as higher molecular weight precursors, have to be imported into the plastid, processed to the mature size and incorporated into the thylakoid membrane. The accumulation of the LHC apoprotein in thylakoids, however, and consequently the photosynthetic unit size, does not depend on the amount of LHC-mRNA present, but it is rather controlled by a complicated post-translational mechanism — which regulates LHC apoprotein stabilization via Chl-protein complex formation. Control of LHC expression, is thus exerted at diverse levels: transcription, translation, import and protein stabilization, but also coordination with RC-plastid coded protein and cofactor biosynthesis for photosynthetic unit assembly.
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Argyroudi-Akoyunoglou, J., Bei-Paraskevopoulou, T., Triantaphyllopoulos, K., Anastassiou, R. (1992). Regulation of Photosynthetic Unit Assembly: Regulation of Light-Harvesting Apoprotein Transcription, Translation and Stabilization in Thylakoids. In: Argyroudi-Akoyunoglou, J.H. (eds) Regulation of Chloroplast Biogenesis. Nato ASI Series, vol 226. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3366-5_44
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DOI: https://doi.org/10.1007/978-1-4615-3366-5_44
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