1.C.36.2.3
Translocator complex AopB/AopD of 347 and 299 aas, respectively.  AopB has been crystalized and the structure determined for this protein in complex with the AcrH chaperone protein (Nguyen et al. 2015). The structure revealed unique interactions between the various interfaces of AopB and AcrH, with the N-terminal "molecular anchor" of AopB crossing into the "N-terminal arm" of AcrH. AopB adopts a novel fold, and its transmembrane regions form two pairs of helical hairpins.