Fig. 3: Cofactors involved in the electron transfer reaction in A. marina PSI and their surrounding amino acid residues.
From: Structure of the far-red light utilizing photosystem I of Acaryochloris marina
a Arrangement of cofactors involved in the electron transfer reaction. Values on both sides represent the center–center distances (in Å) between the cofactors. b Arrangement of P740 and its surrounding structure. View from the side of the membrane plane. c As in b, but view from the pseudo-C2 axis. d Arrangement of the amino acid residues influencing Em (PA) and Em (PB). Superposition of the structural model of PSI from A. marina with that from T. elongatus (PDB code 1JB0). Transparent green and blue, PSI from A. marina; transparent gray, PSI from T. elongatus. Chlorophyll (Chl) d, green; Chl d′, blue; water molecule, red; pheophytin (Pheo) a, orange, phylloquinone (PhyQ), yellow.
