4QCI

PDGF-B blocking antibody bound to PDGF-BB

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Characterization of Binding Mode of Action of a Blocking Anti-Platelet-Derived Growth Factor (PDGF)-B Monoclonal Antibody, MOR8457, Reveals Conformational Flexibility and Avidity Needed for PDGF-BB To Bind PDGF Receptor-beta.

Kuai, J., Mosyak, L., Brooks, J., Cain, M., Carven, G.J., Ogawa, S., Ishino, T., Tam, M., Lavallie, E.R., Yang, Z., Ponsel, D., Rauchenberger, R., Arch, R., Pullen, N.

(2015) Biochemistry 54: 1918-1929

  • DOI: 10.1021/bi5015425

  • PubMed Abstract: 

    • Platelet derived growth factor-BB (PDGF-BB) is an important mitogen and cell survival factor during development. PDGF-BB binds PDGF receptor-β (PDGFRβ) to trigger receptor dimerization and tyrosine kinase activation. We present the pharmacological an ...

    Platelet derived growth factor-BB (PDGF-BB) is an important mitogen and cell survival factor during development. PDGF-BB binds PDGF receptor-β (PDGFRβ) to trigger receptor dimerization and tyrosine kinase activation. We present the pharmacological and biophysical characterization of a blocking PDGF-BB monoclonal antibody, MOR8457, and contrast this to PDGFRβ. MOR8457 binds to PDGF-BB with high affinity and selectivity, and prevents PDGF-BB induced cell proliferation competitively and with high potency. The structural characterization of the MOR8457-PDGF-BB complex indicates that MOR8457 binds with a 2:1 stoichiometry, but that binding of a single MOR8457 moiety is sufficient to prevent binding to PDGFRβ. Comparison of the MOR8457-PDGF-BB structure with that of the PDGFRβ-PDGF-BB complex suggested the potential reason for this was a substantial bending and twisting of PDGF-BB in the MOR8457 structure, relative to the structures of PDGF-BB alone, bound to a PDGF-BB aptamer or PDGFRβ, which makes it nonpermissive for PDGFRβ binding. These biochemical and structural data offer insights into the permissive structure of PDGF-BB needed for agonism as well as strategies for developing specific PDGF ligand antagonists.

    Organizational Affiliation: 

    ‡Scholar Rock LLC, 300 Technology Square, Cambridge, Massachusetts 02142, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
anti-PDGF-BB antibody - Light Chain
A, L
209N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
anti-PDGF-BB antibody - Heavy chain
B, H
223N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Platelet-derived growth factor subunit B
C, D
110Homo sapiensMutation(s): 0 
Gene Names: PDGFB (PDGF2, SIS)
Find proteins for P01127 (Homo sapiens)
Go to Gene View: PDGFB
Go to UniProtKB:  P01127
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.211 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 90.150α = 90.00
b = 68.470β = 97.56
c = 95.250γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
SCALAdata scaling
BUSTERrefinement
AutoPROCdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-03-11
    Type: Initial release
  • Version 1.1: 2015-04-01
    Type: Database references
  • Version 1.2: 2018-02-14
    Type: Experimental preparation