Fig. 4: Structure of the RcpC33-303 dodecamer.
From: The structure of the Tad pilus alignment complex reveals a periplasmic conduit for pilus extension
A Cryo-EM structure of the RcpC33-303 dodecamer shown in cartoon representation, with chains alternating between conformation A (Teal) and conformation B (Blue). B The structures of the D1 domains B and D2 domains C are shown in isolation, illustrating their distinct arrangement, consisting of 6 dimers (D1) or a ring with C12 symmetry (D2), respectively. D Overlay of the two conformations A, B adopted by RcpC33-303 within the RcpC dodecamer, aligned on the D2 domain. The alternate position of D1 relative to D2 is clearly visible.
