7WMV

Structure of human SGLT1-MAP17 complex bound with LX2761

• PDB DOI:  https://doi.org/10.2210/pdb7WMV/pdb
• EM Map EMD-32617: EMDB EMDataResource

• Classification: PROTEIN TRANSPORT
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  PDBTMmpstruc


• Deposited: 2022-01-17 Released: 2022-11-16 
• Deposition Author(s): Chen, L., Niu, Y., Cui, W.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural mechanism of SGLT1 inhibitors.

Niu, Y., Cui, W., Liu, R., Wang, S., Ke, H., Lei, X., Chen, L.

(2022) Nat Commun 13: 6440-6440

• PubMed: 36307403 
• DOI: https://doi.org/10.1038/s41467-022-33421-7
• Primary Citation of Related Structures:  
  7WMV


• PubMed Abstract: 
  

Sodium glucose co-transporters (SGLT) harness the electrochemical gradient of sodium to drive the uphill transport of glucose across the plasma membrane. Human SGLT1 (hSGLT1) plays a key role in sugar uptake from food and its inhibitors show promise in the treatment of several diseases. However, the inhibition mechanism for hSGLT1 remains elusive. Here, we present the cryo-EM structure of the hSGLT1-MAP17 hetero-dimeric complex in the presence of the high-affinity inhibitor LX2761. LX2761 locks the transporter in an outward-open conformation by wedging inside the substrate-binding site and the extracellular vestibule of hSGLT1. LX2761 blocks the putative water permeation pathway of hSGLT1. The structure also uncovers the conformational changes of hSGLT1 during transitions from outward-open to inward-open states.

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Organizational Affiliation: 

Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China. [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 86.42 kDa 
• Atom Count: 4,899 
• Modelled Residue Count: 636 
• Deposited Residue Count: 778 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sodium/glucose cotransporter 1	A	664	Homo sapiens	Mutation(s): 0  Gene Names: SLC5A1, NAGT, SGLT1 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P13866 (Homo sapiens) Explore P13866  Go to UniProtKB:  P13866
PHAROS:  P13866

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PDZK1-interacting protein 1	B	114	Homo sapiens	Mutation(s): 0  Gene Names: PDZK1IP1, MAP17 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for Q13113 (Homo sapiens) Explore Q13113  Go to UniProtKB:  Q13113
PHAROS:  Q13113

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
1YI (Subject of Investigation/LOI)	C [auth A]	N-[2-(dimethylamino)ethyl]-2-methyl-2-[4-[4-[[2-methyl-5-[(2S,3R,4R,5S,6R)-6-methylsulfanyl-3,4,5-tris(oxidanyl)oxan-2-yl]phenyl]methyl]phenyl]butanoylamino]propanamide C32 H47 N3 O6 S BNPZTRDIESRGTC-IXYVTWBDSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.20 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC	v3.1.0

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-11-16 
Deposition Author(s): Chen, L., Niu, Y., Cui, W.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	91957201
National Natural Science Foundation of China (NSFC)	China	31821091
National Natural Science Foundation of China (NSFC)	China	31870833

Revision History  

• Version 1.0: 2022-11-16
  Type: Initial release