Fig. 7: Structure, pigment composition, and linear absorption of Lhcb8 holoprotein compared with those of Lhcb4.1. | Nature Communications

Fig. 7: Structure, pigment composition, and linear absorption of Lhcb8 holoprotein compared with those of Lhcb4.1.

From: A stress-induced paralog of Lhcb4 controls the photosystem II functional architecture in Arabidopsis thaliana

Fig. 7

a, b The overall structure of Lhcb8 (a) and Lhcb4.1 (b) in the C2S2 supercomplexes. The apoproteins are shown as cartoon models, while the pigments are presented as stick models. Color codes: Lime green, Chl a; Royal blue, Chl b; Orange-red, Violaxanthin (Vio); Orange, Lutein (Lut); Purple, Neoxanthin (Neo). c Superposition of Lhcb8 with Lhcb4.1. Color codes: Yellow, Lhcb8; Cyan, Lhcb4.1. d–f The local regions of Lhcb8 and Lhcb4.1 exhibiting evident pigment composition or configuration differences. The carboxy-terminal regions of Lhcb8 and Lhcb4.1 are shown in (d), while Lut620 at the L1 site and nearby chlorophylls in Lhcb8 and Lhcb4.1 are presented in (e). A zoom-in view of the π-π interactions between Lut620 and Chl a612 is presented in (f). g Absorption spectra of Lhcb8_TAG and Lhcb4.1_TAG holoproteins isolated from plant (upper panel). The spectra were normalised on the Chls number and were used to calculate the difference spectrum (bottom panel).

Back to article page