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. 2021 Jun 3;26(11):3378. doi: 10.3390/molecules26113378

Figure 5.

Figure 5

Structure of photosystem I. (A): from the thermophilic cyanobacterium Thermosynecchococcus elongatus at 2.5 Å resolution, PDB entry 1JB0 [61]. Top view with regard to the thylakoid membrane plane, seen from the stromal side. The protein backbone is shown in grey. Chlorophylls a are shown in cyan, β-carotenes in orange and phylloquinones in grey. (B): Structure of monomeric plant photosystem I from Pisum sativum with attached LHCI units (Lhca1–4, separated by color) at 2.6 Å resolution, PDB entry 5L8R [32]. Top view with regard to the thylakoid membrane plane, seen from the stromal side. Chlorophylls a and b are shown in cyan and green, respectively, β-carotenes in orange; the xanthophylls are color-coded as in Figure 1.