Bridging the gap: The dinuclear ferric enterobactin mimic [{Fe(mecam)}2]6− (H6‐mecam=1,3,5‐N,N′,N′′‐tris(2,3‐dihydroxybenzoyl)triaminomethylbenzene) is recognized by two periplasmic binding protein molecules (yellow and blue; see structure). The assembly is stabilized through hydrophobic interactions between the ligand backbones of the dinuclear iron complex.
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