Fig. 2.

Structure of LHCIs. (A–E) Structures of LHCI-1 to LHCI-5 depicted as transparent cartoon models and arrangements of Chls and ZXTs. Chls and ZXTs are colored green and orange, respectively. Only rings of the Chl molecules are depicted. (F and G) Comparison of Chls (F) and ZXTs (G) between C. caldarium (cyan) and C. merolae (orange). The C. caldarium PSI-LHCI structure was superimposed with the C. merolae PSI-LHCI structure (PDB: 5ZGB). The structures are viewed from the stromal side. Chls and ZXTs are shown as sticks. Only rings of the Chl molecules are depicted. Numbers 1 to 5 (red) indicate the sites of LHCI-1 to 5, respectively, in the C. caldarium PSI-LHCI structure.