Fig. 5
The difference in global arrangement of chlorophyll molecules between representative cyanobacteria and alga/plant, structural characteristic of the reaction centers and more aromatic residues closely interacting with P700. Panel a, he shortest distances between chlorophyll—chlorophyll pairs were calculated and are present. The PDB IDs are labeled. *** means a p value is less than 0.001 in a t-test; panel (b), the shortest distances between P700A—other chlorophyll pairs, P700B—other chlorophyll pairs, A−1A—other chlorophyll pairs, A−1B—other chlorophyll pairs, A0A—other chlorophyll pairs, A0B—other chlorophyll pairs, ACA—other chlorophyll pairs, ACB—other chlorophyll pairs and chlorophyll pairs (including antenna). In panels a and b, the average values, SDs, and 25/75 percentiles are indicated; panel c, the numbers of aromatic residues (phenylalanine, tyrosine and tryptophan) that have close interactions with P700A, P700B, A−1A, A−1B, A0A, A0B, ACA and ACB. The percentages of those aromatic residues are present. The cutoff value for the close interactions is 3.5 Å. The average values and SDs are indicated. * means a p value is less than 0.05 using a t-test; Panels d through g, the representative surrounding amino acids of P700A d, P700B (e), A−1A (f) and A−1B (g) are illustrated. The PDB is 5OY0. The numbers of aromatic residues that have closely interactions with P700 is larger than those that closely interact with A−1 or A0