Abstract:Human UDP-Gal transporter 1 (hUGT1) and the human CMP-Sia transporter (hCST) are similar in structure, with amino acid sequences that are 43% identical, but they have quite distinct transport substrates. To define their substrate recognition regions, we constructed various chimeras between the two transporters and demonstrated that distinct submolecular regions of the transporter molecules are involved in the specific recognition of UDP-Gal and CMP-Sia (Aoki, K., Ishida, N., and Kawakita, M. (2001) J. Biol. Ch… Show more
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