9LLG | pdb_00009llg

Cryo-EM structure of D1R in complex with de novo designed negative allosteric GEM targeting TM5/6/7

• PDB DOI: https://doi.org/10.2210/pdb9LLG/pdb
• EM Map EMD-63201: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens, Escherichia coli
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2025-01-17 Released: 2026-03-04 
• Deposition Author(s): Guo, J., Zhou, Y., Cheng, S., Zhang, Y.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.77 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

GPCR exoframe modulator

Cheng, S., Guo, J., Zhou, Y., Zhang, Y.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 69.52 kDa 
• Atom Count: 3,605 
• Modeled Residue Count: 435 
• Deposited Residue Count: 611 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
D(1A) dopamine receptor,Soluble cytochrome b562	A [auth R]	516	Homo sapiens, Escherichia coli	Mutation(s): 0  Gene Names: DRD1, cybC
UniProt & NIH Common Fund Data Resources
Find proteins for P21728 (Homo sapiens) Explore P21728  Go to UniProtKB:  P21728
PHAROS:  P21728 GTEx:  ENSG00000184845
Find proteins for P0ABE7 (Escherichia coli) Explore P0ABE7  Go to UniProtKB:  P0ABE7
UniProt Groups	P21728P0ABE7

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
De novo designed negative allosteric GPCR exoframe modulator targeting TM5/6/7	B [auth M]	95	Homo sapiens	Mutation(s): 0

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1EKL (Subject of Investigation/LOI)	D [auth R]	Flupentixol C23 H25 F3 N2 O S NJMYODHXAKYRHW-DVZOWYKESA-N
CLR	C [auth R], E [auth R]	CHOLESTEROL C27 H46 O HVYWMOMLDIMFJA-DPAQBDIFSA-N
PLM	F [auth M]	PALMITIC ACID C16 H32 O2 IPCSVZSSVZVIGE-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.77 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-03-04 
Deposition Author(s): Guo, J., Zhou, Y., Cheng, S., Zhang, Y.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2026-03-04
  Type: Initial release