Fig. 1.
A:Schematic representation of the topological structure of MRP1/ABCC1 protein predicted using TOPO2 program with modification (http://www.sacs.ucsf.edu/TOPO-run/wtopo.pl). The consensus sequences of Walker A and B are highlighted in orange and green, respectively. The ABC-signature motif is highlighted in red. TM, transmembrane; MSD, membrane spanning domain; NBD, nucleotide-binding domain. B: Distribution of clinically relevant MRP1/ABCC1 exon polymorphisms.