Figure 1
From: Functional importance of the oligomer formation of the cyanobacterial H+ pump Gloeobacter rhodopsin
The positions of key residues in this study. Here, we showed the structure of XR (PDB ID: 3DDL), where the “H+ acceptor” Asp96 residue interacts with the neighboring His62 residue. They correspond to Asp121 and His87 in GR, respectively. The top view from the cytoplasmic (CP) side is shown in the left panel. Enlarged view of the H+ acceptor region is shown in the right panel. Here, “EC side” means “extracellular side”. The broken lines represent the proposed hydrogen bonds, and the red sphere represents water molecule.
