7WIT | pdb_00007wit

Deposited: 2022-01-04 Released: 2022-11-16
Deposition Author(s): Chen, L., Wang, M.M.
Funding Organization(s): National Natural Science Foundation of China (NSFC)

Experimental Data Snapshot

wwPDB Validation 3D Report Full Report

This is version 1.3 of the entry. See complete history.

(2022) Front Pharmacol 13: 929684-929684

PubMed Abstract:
Mitiglinide is a highly selective fast-acting anti-diabetic drug that induces insulin secretion by inhibiting pancreatic K _ATP channels. However, how mitiglinide binds K _ATP channels remains unknown. Here, we show the cryo-EM structure of the SUR1 subunit complexed with mitiglinide. The structure reveals that mitiglinide binds inside the common insulin secretagogue-binding site of SUR1, which is surrounded by TM7, TM8, TM16, and TM17. Mitiglinide locks SUR1 in the NBD-separated inward-facing conformation. The detailed structural analysis of the mitiglinide-binding site uncovers the molecular basis of its high selectivity.

Organizational Affiliation

State Key Laboratory of Membrane Biology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, College of Future Technology, Institute of Molecular Medicine, Peking University, Beijing, China.

Macromolecule Content

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ATP-sensitive inward rectifier potassium channel 11,ATP-binding cassette sub-family C member 8 isoform X1	A	1,434	Bos taurus, Mesocricetus auratus This entity is chimeric	Mutation(s): 0 Gene Names: KCNJ11, Abcc8 Membrane Entity: Yes
UniProt
Find proteins for A0A1U7R319 (Mesocricetus auratus) Explore A0A1U7R319 Go to UniProtKB: A0A1U7R319
Find proteins for A2VDS4 (Bos taurus) Explore A2VDS4 Go to UniProtKB: A2VDS4
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Groups	A0A1U7R319 A2VDS4
Sequence Annotations Expand
Reference Sequence

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
ATP Query on ATP Download:Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	ADENOSINE-5'-TRIPHOSPHATE C₁₀ H₁₆ N₅ O₁₃ P₃ ZKHQWZAMYRWXGA-KQYNXXCUSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]
9I0 (Subject of Investigation/LOI) Query on 9I0 Download:Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	(2S)-4-[(3aR,7aS)-1,3,3a,4,5,6,7,7a-octahydroisoindol-2-yl]-4-oxidanylidene-2-(phenylmethyl)butanoic acid C₁₉ H₂₅ N O₃ WPGGHFDDFPHPOB-BBWFWOEESA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]