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  • Title: Lil3 dimerization and chlorophyll binding in Arabidopsis thaliana.
    Author: Mork-Jansson AE, Gargano D, Kmiec K, Furnes C, Shevela D, Eichacker LA.
    Journal: FEBS Lett; 2015 Oct 07; 589(20 Pt B):3064-70. PubMed ID: 26320415.
    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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