6KNM

Apelin receptor in complex with single domain antibody


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.258 
  • R-Value Observed: 0.260 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure-guided discovery of a single-domain antibody agonist against human apelin receptor.

Ma, Y.Ding, Y.Song, X.Ma, X.Li, X.Zhang, N.Song, Y.Sun, Y.Shen, Y.Zhong, W.Hu, L.A.Ma, Y.Zhang, M.Y.

(2020) Sci Adv 6: eaax7379-eaax7379

  • DOI: 10.1126/sciadv.aax7379
  • Primary Citation of Related Structures:  
    6KNM

  • PubMed Abstract: 
  • Developing antibody agonists targeting the human apelin receptor (APJ) is a promising therapeutic approach for the treatment of chronic heart failure. Here, we report the structure-guided discovery of a single-domain antibody (sdAb) agonist JN241-9, based on the cocrystal structure of APJ with an sdAb antagonist JN241, the first cocrystal structure of a class A G protein-coupled receptor (GPCR) with a functional antibody ...

    Developing antibody agonists targeting the human apelin receptor (APJ) is a promising therapeutic approach for the treatment of chronic heart failure. Here, we report the structure-guided discovery of a single-domain antibody (sdAb) agonist JN241-9, based on the cocrystal structure of APJ with an sdAb antagonist JN241, the first cocrystal structure of a class A G protein-coupled receptor (GPCR) with a functional antibody. As revealed by the structure, JN241 binds to the extracellular side of APJ, makes critical contacts with the second extracellular loop, and inserts the CDR3 into the ligand-binding pocket. We converted JN241 into a full agonist JN241-9 by inserting a tyrosine into the CDR3. Modeling and molecular dynamics simulation shed light on JN241-9-stimulated receptor activation, providing structural insights for finding agonistic antibodies against class A GPCRs.


    Organizational Affiliation

    Amgen Discovery Research, Amgen Asia R&D Center, Amgen Biopharmaceutical R&D (Shanghai) Co. Ltd., 13th Floor, Building No. 2, 4560 Jinke Road, Zhangjiang, Shanghai 201210, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Apelin receptor,Rubredoxin,Apelin receptorA [auth B]407Homo sapiensClostridium pasteurianumMutation(s): 5 
Gene Names: APLNRAGTRL1APJ
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P00268 (Clostridium pasteurianum)
Explore P00268 
Go to UniProtKB:  P00268
Find proteins for P35414 (Homo sapiens)
Explore P35414 
Go to UniProtKB:  P35414
PHAROS:  P35414
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Single domain antibody JN241B [auth A]129Camelus bactrianusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN (Subject of Investigation/LOI)
Query on ZN

Download Ideal Coordinates CCD File 
C [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.258 
  • R-Value Observed: 0.260 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.78α = 90
b = 48.39β = 90
c = 350.1γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-01-29
    Type: Initial release
  • Version 1.1: 2020-02-12
    Changes: Advisory, Database references