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. 2020 Oct 8;11:5081. doi: 10.1038/s41467-020-18867-x

Fig. 5. Pigment arrangement and energy transfer pathways in the diatom PSI-FCPI.

Fig. 5

a Distribution of all pigments in the PSI-FCPI supercomplex. Chls a in FCPIs, Chls a in the core, Chls c, Fx, Ddx, and Bcr are shown in sticks and colored in green, cyan, blue, dark salmon, yellow, and magenta, respectively. Special Chl a–a pairs are colored in red, two extra Chl c–c pairs are labeled and placed into blue rectangles. b Distribution of all Cars and special Chl a–a pairs in PSI-FCPI. c Energy transfer pathways within PSI-FCPI at the stromal side. Orange arrows indicate EET pathways from inner FCPIs to the PSI core and black arrows indicate EET pathways from outer to inner FCPIs. d EET pathways at the lumenal side. Wide arrows indicate EET pathways from inner FCPIs to the PSI core. EET via Chl 405–409 pathways are labeled in magenta squares and those via Chl 410–405 and 410–404 pairs are labeled in orange squares. Other EET pathways associated with Chl 410–409 or other Chls are indicated by thin arrows. In c and d, labeled Chls depict Chls involved in EET between subunits.