ExbD
ExbD is present in cells only in a complex with ExbB, where is affects the functioning of the TonB complex both in how it responds to the proton motive force as well as its affinity with either the cytoplasmic or outer membrane. [1]
ExbD is present in cells only in a complex with ExbB, where is affects the functioning of the TonB complex both in how it responds to the proton motive force as well as its affinity with either the cytoplasmic or outer membrane. [1]