Fig. 1.
Structures of transporters discussed in the review. TMs are shown in lighter shades while NBDs are colored in darker tones. PDB accession codes are as follows: ABCB1 (6FN4), ABCC1 (5UJ9), ABCG2 (6VXF), SLC19A1 (7XPZ), SLC29A1 (6OB6).
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