9EAI

Structure of nanobody AT206 in complex with the losartan-bound angiotensin II type I receptor (AT1R)

• PDB DOI: https://doi.org/10.2210/pdb9EAI/pdb
• EM Map EMD-47832: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Camelidae, Homo sapiens, Escherichia coli, synthetic construct
• Expression System: Homo sapiens
• Mutation(s): Yes 


• Deposited: 2024-11-11 Released: 2025-03-05 
• Deposition Author(s): Skiba, M.A., Liu, J., Kruse, A.C.
• Funding Organization(s): Helen Hay Whitney Foundation, National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD), National Institutes of Health/National Cancer Institute (NIH/NCI)

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.10 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Epitope-Directed Selection of GPCR Nanobody Ligands with Evolvable Function

Skiba, M.A., Canavan, C., Nemeth, G.R., Liu, J., Kanso, A., Kruse, A.C.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A1B1C1D1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 4-mer - A3B1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 180.95 kDa 
• Atom Count: 5,554 
• Modelled Residue Count: 687 
• Deposited Residue Count: 1,612 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Nanobody AT206,Type-1 angiotensin II receptor,Soluble cytochrome b562	A, B	583	Camelidae, Homo sapiens, Escherichia coli	Mutation(s): 3
UniProt & NIH Common Fund Data Resources
Find proteins for P30556 (Homo sapiens) Explore P30556  Go to UniProtKB:  P30556
PHAROS:  P30556 GTEx:  ENSG00000144891
Find proteins for P0ABE7 (Escherichia coli) Explore P0ABE7  Go to UniProtKB:  P0ABE7
UniProt Groups	P0ABE7P30556

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
BAG2 Anti-BRIL Fab Heavy Chain	C	231	synthetic construct	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
BAG2 Anti-BRIL Fab Light Chain	D	215	synthetic construct	Mutation(s): 0

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
Y01	F [auth A], G [auth A]	CHOLESTEROL HEMISUCCINATE C31 H50 O4 WLNARFZDISHUGS-MIXBDBMTSA-N
LSN (Subject of Investigation/LOI)	E [auth A]	[2-butyl-5-chloranyl-3-[[4-[2-(2H-1,2,3,4-tetrazol-5-yl)phenyl]phenyl]methyl]imidazol-4-yl]methanol C22 H23 Cl N6 O PSIFNNKUMBGKDQ-UHFFFAOYSA-N
CLR	H [auth A]	CHOLESTEROL C27 H46 O HVYWMOMLDIMFJA-DPAQBDIFSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.10 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21.1_5286:

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-03-05 
Deposition Author(s): Skiba, M.A., Liu, J., Kruse, A.C.

---

Funding Organization	Location	Grant Number
Helen Hay Whitney Foundation	United States	--
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)	United States	K99HD110612
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)	United States	R21HD101596
National Institutes of Health/National Cancer Institute (NIH/NCI)	United States	R01CA260415

Revision History  

• Version 1.0: 2025-03-05
  Type: Initial release