Fig. 4
From: Structure of a cyanobacterial photosystem I tetramer revealed by cryo-electron microscopy
Interactions at the Type 2 interface. a Structure of a dimer unit (dimer A-B′) from a PSI tetramer viewed along the membrane normal from the stromal side. b, c Interactions between PsaA (A) and PsaB (B′). d, e Interactions between PsaL (A) and PsaB (B′)
