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. 2021 Jul 14;8(7):202142. doi: 10.1098/rsos.202142

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© 2021 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 7. — Hypothetical models of photosynthetic supercomplex associations. Protein structures were obtained from PDB (PSI: 1JB0; PSII: 3WU2, Cyt b₆f: 4H13, ATPase: 6FKF). (a) The hypothetical model of PSI–PSII supercomplex. Possible interacting subunits are PsaK of PSI and PsbY of PSII (red). (b) The hypothetical model of PSI–Cyt b₆f supercomplex. They interact at PsaK of PSI and PetM of Cyt b₆f (red). (c) The hypothetical model of PSII–Cyt b₆f supercomplex. They interact at PsbU, PsbV of PSII and PetM of Cyt b₆f (red). (d) The location of subunit b’ (pink) in ATPase. (e,f) AFM visualization of PSI–PSII from the lumenal surface (e), PSI–Cyt b₆f from the lumenal surface (f), PSII–Cyt b₆f from the lumenal surface (g), and PSI–ATPase from the cytoplasmic surface (h) associations, corresponding to (a–d).