Lil3 dimerization and chlorophyll binding in Arabidopsis thaliana

FEBS Letters
Astrid Mork-JanssonLutz Andreas Eichacker

Abstract

The two-helix light harvesting like (Lil) protein Lil3 belongs to the family of chlorophyll binding light harvesting proteins of photosynthetic membranes. A function in tetrapyrrol synthesis and stabilization of geranylgeraniol reductase has been shown. Lil proteins contain the chlorophyll a/b-binding motif; however, binding of chlorophyll has not been demonstrated. We find that Lil3.2 from Arabidopsis thaliana forms heterodimers with Lil3.1 and binds chlorophyll. Lil3.2 heterodimerization (25±7.8 nM) is favored relative to homodimerization (431±59 nM). Interaction of Lil3.2 with chlorophyll a (231±49 nM) suggests that heterodimerization precedes binding of chlorophyll in Arabidopsis thaliana.

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Citations

Aug 30, 2018·Plant, Cell & Environment·Sylwia StrukSofie Goormachtig
Feb 2, 2018·PloS One·Astrid Elisabeth Mork-Jansson, Lutz Andreas Eichacker
Jan 10, 2019·Plant Methods·Astrid Elisabeth Mork-Jansson, Lutz Andreas Eichacker

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