Fig. 7
From: A strategy to characterize chlorophyll protein interaction in LIL3
Model for Chl a binding to N174 and LIL3 dimerization. The predicted transmembrane helix 1 of LIL3 is displayed as HCA plot between amino-acid E174 to D192. The dimeric state is depicted by two helices plotted as mirror images to span the thylakoid membrane from the stroma to the lumen in the direction from N- to C-terminus (NA to CA and NB to CB). The amino-acid Asn174 (N) binding Chl (black line, Mg2+) is pointing outward towards the membrane lipid phase. The graphical sketch in the center explains the contribution of amino-acids e E171 and R176 for interaction of LIL3 monomers by overlapping E–R ion-pairing (dashed line) and the proposed interaction for overlapping monomer interaction by N174 (helixA) and R176 (helixB) and N174 (helixB) and R176 (helixA) to explain the lack of LIL3 dimerization and Chl interaction in the LIL3 mutants