Supplementary Figure 7: Three representative ABC exporters in their inward-facing or outward-facing conformational states.
From: Structural basis for lipopolysaccharide extraction by ABC transporter LptB2FG
The nucleotide-free LptB2FG transporter (a), the heterodimeric TM287-TM288 exporter in the apo state (PDB code: 4Q4H) (b) and the heterodimeric nucleotide-free human sterol ABCG5-ABCG8 exporter (PDB code: 5DO7) (c) in inward-facing conformational state; the homodimeric AMP-PNP-bound Sav1866 exporter (PDB code: 2ONJ) (d) in outward-facing conformational state.
