Fig. 8: Summarizing schematic showing (upper panels) the ClpC ATPase states in each ring, the state of the ClpP H-sites receiving the ClpC P-loops and the visibility of the ClpP β-hairpins (light versus dark purple).
From: Structure of the central Staphylococcus aureus AAA+ protease MecA/ClpC/ClpP

In the bottom panel, for each ClpC subunit (a–f), the general contacts between the AAA-2 ring ClpC allosteric regions and ClpP β-haipins are represented.