Fig. 2: Structures and locations of the Unk1, Unk2, and Unk3 subunits in PSII-ACPII of C. placoidea.

a, b The structure of Unk1 (a) and its location in the supercomplex (b). c, d The structure of Unk2 (c) and its location in the supercomplex (d). e, f The structure of Unk3 (e) and its location in the supercomplex (f). The adjacent subunits of Unk1, Unk2, and Unk3 are shown in surface mode.