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Predicted structural organization of ABCA4 and its domains. Pictorial representation showing the cytoplasmic, extracellular, and transmembrane domains of the ABCA4 protein. The domains were defined based on current topological models of ABCA4 (24) and are as follows: NDB1 amino acids 854–1375, NBD2 amino acids 1898–2273, ECD1 amino acids 62–646, and ECD2 amino acids 1395–1680.
