7WIT

Structure of SUR1 in complex with mitiglinide

PDB DOI: https://doi.org/10.2210/pdb7WIT/pdb
EM Map EMD-32535: EMDB EMDataResource

Classification: MEMBRANE PROTEIN
Organism(s): Bos taurus, Mesocricetus auratus
Expression System: Homo sapiens
Mutation(s): No
Membrane Protein: Yes PDBTM

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

Method: ELECTRON MICROSCOPY
Resolution: 3.21 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

This is version 1.1 of the entry. See complete history.

Literature

Structural Insights Into the High Selectivity of the Anti-Diabetic Drug Mitiglinide

Wang, M.M., Wu, J.X., Chen, L.

(2022) Front Pharmacol 13: 929684-929684

PubMed: 35847046 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.3389/fphar.2022.929684
Primary Citation of Related Structures:
7WIT

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

Total Structure Weight: 160.26 kDa
Atom Count: 8,109
Modelled Residue Count: 1,133
Deposited Residue Count: 1,434
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 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 A2VDS4 (Bos taurus) Explore A2VDS4 Go to UniProtKB: A2VDS4
Find proteins for A0A1U7R319 (Mesocricetus auratus) Explore A0A1U7R319 Go to UniProtKB: A0A1U7R319
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Groups	A0A1U7R319A2VDS4
Sequence Annotations Expand
Reference Sequence

Small Molecules

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]	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]	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]