A new function for the xanthophyll zeaxanthin: glueing chlorophyll biosynthesis to thylakoid protein assembly.

Biochem J

Department of Biotechnology, University of Verona, Strada Le Grazie, 37134 Verona, Italy.

Published: January 2021

Xanthophylls are coloured isoprenoid metabolites synthesized in many organisms with a variety of functions from the attraction of animals for impollination to absorption of light energy for photosynthesis to photoprotection against photooxidative stress. The finding by Proctor and co-workers makes a new addition to the last type of functions by showing that zeaxanthin is instrumental in coordinating chlorophyll biosynthesis with the insertion of pigment-binding proteins into the photosynthetic membrane by glueing the protein components catalyzing these functions into a supercomplex and regulating its activity.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7800364PMC
http://dx.doi.org/10.1042/BCJ20200803DOI Listing

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