Molecular basis of inhibition of the amino acid transporter B0AT1 (SLC6A19)

Xu，Junyang1; Hu，Ziwei2; Dai，Lu2; Yadav，Aditya3; Jiang，Yashan3; Bröer，Angelika3; Gardiner，Michael G.1; McLeod，Malcolm1; Yan，Renhong2; Bröer，Stefan3

2024-12-01

10.1038/s41467-024-51748-1

Nature Communications   影响因子和分区

2041-1723

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.

英语

通讯

2-s2.0-85201821802

Scopus

1.Research School of Chemistry,Australian National University,Canberra,Australia
2.Department of Biochemistry,Key University Laboratory of Metabolism and Health of Guangdong,School of Medicine,Institute for Biological Electron Microscopy,Southern University of Science and Technology,Shenzhen,Guangdong,China
3.Research School of Biology,Australian National University,Canberra,Australia

Xu，Junyang,Hu，Ziwei,Dai，Lu,et al. Molecular basis of inhibition of the amino acid transporter B0AT1 (SLC6A19)[J]. Nature Communications,2024,15(1).

Xu，Junyang.,Hu，Ziwei.,Dai，Lu.,Yadav，Aditya.,Jiang，Yashan.,...&Bröer，Stefan.(2024).Molecular basis of inhibition of the amino acid transporter B0AT1 (SLC6A19).Nature Communications,15(1).

Xu，Junyang,et al."Molecular basis of inhibition of the amino acid transporter B0AT1 (SLC6A19)".Nature Communications 15.1(2024).