Assembly and Degradation of Pigment-binding Proteins
Tania Tibiletti, Miguel A. Hernández-Prieto, Trudi A. Semeniuk and Christiane Funk
from: Chloroplasts: Current Research and Future Trends (Edited by: Helmut Kirchhoff). Caister Academic Press, U.K. (2016) Pages: 25-58.
In organisms performing oxygenic photosynthesis, the light absorbed by the Photosystem II reaction center is used to power the extraction of electrons from water, and initiate a series of oxidation-reduction reactions that power the synthesis of energy-rich molecules (ATP and NAD(P)H). These energy-rich molecules are transported to other cellular compartments to power all the metabolic reactions required to maintain growth. To ensure a constant supply of energy and avoid deleterious reactions caused by the absorption of excess sun light, photosynthetic organisms have evolved different mechanisms to reduce or increase the number of pigment-binding molecules present in their thylakoids. This chapter offers a current overview of the processes underlying assembly, degradation, and repair of the pigment-binding complexes present in higher plants, green algae, and cyanobacteria. We focus specifically on the chlorophyll-binding complexes in these organisms read more ...