20ZX | pdb_000020zx

Cryo-EM structure of Gq-coupled LPAR5 in complex with LPA

• PDB DOI: https://doi.org/10.2210/pdb20ZX/pdb
• EM Map EMD-67439: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Trichoplusia ni
• Mutation(s): No 


• Deposited: 2025-12-04 Released: 2026-06-17 
• Deposition Author(s): Zhao, L., Li, X.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.96 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural basis for lysophosphatidic acid recognition and atypical G(a)q coupling by LPAR5

Li, X.

(2026) Proc Natl Acad Sci U S A 

• DOI: https://doi.org/10.1073/pnas.2537482123

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 157.78 kDa 
• Atom Count: 9,077 
• Modeled Residue Count: 1,149 
• Deposited Residue Count: 1,421 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	A [auth B]	371	Homo sapiens	Mutation(s): 0  Gene Names: GNB1
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens) Explore P62873  Go to UniProtKB:  P62873
PHAROS:  P62873 GTEx:  ENSG00000078369

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	B [auth G]	70	Homo sapiens	Mutation(s): 0  Gene Names: GNG2
UniProt & NIH Common Fund Data Resources
Find proteins for P59768 (Homo sapiens) Explore P59768  Go to UniProtKB:  P59768
PHAROS:  P59768 GTEx:  ENSG00000186469

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Lysophosphatidic acid receptor 5	C [auth R]	372	Homo sapiens	Mutation(s): 0  Gene Names: LPAR5, GPR92, GPR93
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H1C0 (Homo sapiens) Explore Q9H1C0  Go to UniProtKB:  Q9H1C0
PHAROS:  Q9H1C0 GTEx:  ENSG00000184574

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Guanine nucleotide-binding protein G(324) subunit alpha	D [auth A]	361	Homo sapiens	Mutation(s): 0

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
scFv16	E	247	Homo sapiens	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
UBL (Subject of Investigation/LOI)	F [auth R]	[(2R)-2-oxidanyl-3-phosphonooxy-propyl] (Z)-octadec-9-enoate C21 H41 O7 P WRGQSWVCFNIUNZ-GDCKJWNLSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.96 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-06-17 
Deposition Author(s): Zhao, L., Li, X.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	32371255
National Natural Science Foundation of China (NSFC)	China	32130022

Revision History  

• Version 1.0: 2026-06-17
  Type: Initial release