FIGURE 9.

Summary of the Cx32CT, Cx40CT, and Cx43CT residues affected by BSA and salt concentration. Displayed is the amino acid sequence for the Cx32CT (top), Cx40CT (middle), and the Cx43CT (bottom) domains. On the left side of each sequence is the ligand titrated into the CT domain, and the affected residues have been highlighted (red greater than green). Gray-shaded regions indicate the CT residues that are affected by BSA and salt. After analyzing the Cx40CT and Cx43CT residues affected by BSA and salt, underlined in blue are the CT residues affected by the presence of the indicated CT or CL ligand. Black lines are the Cx43CT residues that form an α-helical structure. Black dashed lines are the Cx40CT residues determined from the CD/TFE experiment to form α-helical structure.