Article
Conserved aspartic acid residues lining the extracellular loop 1 of sodium-coupled bile acid transporter ASBT Interact with Na+ and 7alpha-OH moieties on the ligand cholestane skeleton.
The Journal of biological chemistry - 25 Jul 2008
Hussainzada Naissan, Da Silva Tatiana Claro, Zhang Eric Y, Swaan Peter W
Abstract excerpt
Functional contributions of residues Val-99-Ser-126 lining extracellular loop (EL) 1 of the apical sodium-dependent bile acid transporter were determined via cysteine-scanning mutagenesis, thiol modification, and in silico interpretation. Despite membrane expression for all but three constructs (S112C, Y117C, S126C), most EL1 mutants (64%) were inactivated by cysteine mutation, suggesting a functional role during...
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