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| Title | Molecular basis of inhibition of the amino acid transporter BAT1 (SLC6A19). |
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| Journal, issue, pages | Nat Commun, Vol. 15, Issue 1, Page 7224, Year 2024 |
| Publish date | Aug 22, 2024 |
 Authors | Junyang Xu / Ziwei Hu / Lu Dai / Aditya Yadav / Yashan Jiang / Angelika Bröer / Michael G Gardiner / Malcolm McLeod / Renhong Yan / Stefan Bröer /   |
| PubMed Abstract | The epithelial neutral amino acid transporter BAT1 (SLC6A19) is the major transporter for the absorption of neutral amino acids in the intestine and their reabsorption in the kidney. Mouse models ...The epithelial neutral amino acid transporter BAT1 (SLC6A19) is the major transporter for the absorption of neutral amino acids in the intestine and their reabsorption in the kidney. Mouse models have demonstrated that lack of BAT1 can normalize elevated plasma amino acids in rare disorders of amino acid metabolism such as phenylketonuria and urea-cycle disorders, implying a pharmacological approach for their treatment. Here we employ a medicinal chemistry approach to generate BAT1 inhibitors with IC-values of 31-90 nM. High-resolution cryo-EM structures of BAT1 in the presence of two compounds from this series identified an allosteric binding site in the vestibule of the transporter. Mechanistically, binding of these inhibitors prevents a movement of TM1 and TM6 that is required for the transporter to make a conformational change from an outward open state to the occluded state. |
 External links | Nat Commun / PubMed:39174516 / PubMed Central |
| Methods | EM (single particle) |
| Resolution | 3.18 - 3.2 Å |
| Structure data | EMDB-37427, PDB-8wby: EMDB-37428, PDB-8wbz: |
| Chemicals | 
ChemComp-WM8:  ChemComp-NAG:
ChemComp-XF0: |
| Source |
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 Keywords | PROTEIN TRANSPORT/HYDROLASE / Transporter / Complex / Inhibitor / PROTEIN TRANSPORT / PROTEIN TRANSPORT-HYDROLASE complex / Inhibitors |
homo sapiens (human)