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4 component system: The TonB-ExbB-ExbD/TolA-TolQ-TolR Outer Membrane Receptor Energizers and Stabilizers (TonB/TolA) Family

P19934 TolA aka CIM aka EXCC aka LKY aka B0739
P45955 YbgF
C6EJJ6 Pal, subunit of The Tol-Pal Cell Envelope Complex, Colicin S4 Transport System and The Colicin A Import System
P0A855 Protein TolB