PDBID	Molecule/ Organism	Pfam	Residues	HETATM	Symmetry	Pubmed	View
3rvy	ION TRANSPORT PROTEIN Arcobacter butzleri	Ion_trans	GLU A1177 SER A1178 GLU B2177 SER B2178 GLU C1177 SER C1178 GLU D2177 SER D2178	None	homomer cyclic	21743477
5hk7	ION TRANSPORT PROTEIN Alkalilimnicola ehrlichii	Ion_trans	GLU A 197 SER A 198 GLU B 197 SER B 198 GLU C 197 SER C 198 GLU D 197 SER D 198	NA B 304	homomer cyclic	26919429