Figure 2From: Molecular understanding of sterically controlled compound release through an engineered channel protein (FhuA)Structural model of FhuA Δ1-160 deletion variant. Side view (left); top view (right)) harboring the six lysine residues (K167, K344, K364, K537, K556 and K586) in the inner channel part. Lysine residues are pyridyl-labeled. FhuA Δ1-160 variant structures were energy minimized using AccelerysProgram Suite, Version 2.0 (see Additional file 1).Back to article page