8WBZ

Cryo-EM structure of ACE2-B0AT1 complex with JX225

Summary for 8WBZ

• Entry DOI: 10.2210/pdb8wbz/pdb
• EMDB information: 37428
• Descriptor: Sodium-dependent neutral amino acid transporter B(0)AT1, Angiotensin-converting enzyme 2, 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose, ... (5 entities in total)
• Functional Keywords: transporter, complex, inhibitors, protein transport, protein transport-hydrolase complex, protein transport/hydrolase
• Biological source: Homo sapiens (human); More
• Total number of polymer chains: 4
• Total formula weight: 342910.68

Authors

Yan, R.,Hu, Z.,Dai, L. (deposition date: 2023-09-10, release date: 2024-09-11, Last modification date: 2024-10-16)

Primary citation

Xu, J.,Hu, Z.,Dai, L.,Yadav, A.,Jiang, Y.,Broer, A.,Gardiner, M.G.,McLeod, M.,Yan, R.,Broer, S.
Molecular basis of inhibition of the amino acid transporter B 0 AT1 (SLC6A19).
Nat Commun, 15:7224-7224, 2024

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 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.

PubMed: 39174516
DOI: 10.1038/s41467-024-51748-1

Experimental method

ELECTRON MICROSCOPY (3.2 Å)