9VV6 | pdb_00009vv6

The structure of ITN bound OXGR1

• PDB DOI: https://doi.org/10.2210/pdb9VV6/pdb
• EM Map EMD-65376: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli, Homo sapiens, Escherichia coli K-12, Mus musculus
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2025-07-14 Released: 2026-07-15 
• Deposition Author(s): Su, Q., Liang, E.Y., Ma, T.S., Chen, Z.Y., Tang, X.F.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.62 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

The structure of ITN bound OXGR1

Su, Q., Liang, E.Y., Ma, T.S., Chen, Z.Y., Tang, X.F.

To be published.

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: 330.38 kDa 
• Atom Count: 9,047 
• Modeled Residue Count: 1,146 
• Deposited Residue Count: 2,986 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Soluble cytochrome b562,2-oxoglutarate receptor 1,Soluble cytochrome b562,2-oxoglutarate receptor 1,Soluble cytochrome b562,2-oxoglutarate receptor 1,Fusion protein,Maltose/maltodextrin-binding periplasmic protein,Maltose/maltodextrin-binding periplasmic protein,Maltose/maltodextrin-binding periplasmic protein	A	1,398	Escherichia coli, Homo sapiens, Escherichia coli K-12	Mutation(s): 0  Gene Names: cybC, OXGR1, GPR80, GPR99, P2RY15, P2Y15, malE, b4034, JW3994
UniProt & NIH Common Fund Data Resources
Find proteins for P0ABE7 (Escherichia coli) Explore P0ABE7  Go to UniProtKB:  P0ABE7
Find proteins for Q96P68 (Homo sapiens) Explore Q96P68  Go to UniProtKB:  Q96P68
PHAROS:  Q96P68 GTEx:  ENSG00000165621
Find proteins for P0AEX9 (Escherichia coli (strain K12)) Explore P0AEX9  Go to UniProtKB:  P0AEX9
UniProt Groups	P0ABE7P0AEX9Q96P68

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 C]	71	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
Fusion protein,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	C [auth D]	609	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P62873 (Homo sapiens) Explore P62873  Go to UniProtKB:  P62873
PHAROS:  P62873 GTEx:  ENSG00000078369

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Gq alpha	D [auth B]	361	Homo sapiens	Mutation(s): 0

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
scFv-16	E	547	Mus musculus	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ITN	F [auth A]	2-methylidenebutanedioic acid C5 H6 O4 LVHBHZANLOWSRM-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.62 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.19.2_4158
RECONSTRUCTION	Coot

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-07-15 
Deposition Author(s): Su, Q., Liang, E.Y., Ma, T.S., Chen, Z.Y., Tang, X.F.

---

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

Revision History  

• Version 1.0: 2026-07-15
  Type: Initial release