3FFD

Structure of parathyroid hormone-related protein complexed to a neutralizing monoclonal antibody


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for antibody discrimination between two hormones that recognize the parathyroid hormone receptor

McKinstry, W.J.Polekhina, G.Diefenbach-Jagger, H.Ho, P.W.M.Sato, K.Onuma, E.Gillespie, M.T.Martin, T.J.Parker, M.W.

(2009) J.Biol.Chem. 284: 15557-15563

  • DOI: 10.1074/jbc.M900044200

  • PubMed Abstract: 
  • Parathyroid hormone-related protein (PTHrP) plays a vital role in the embryonic development of the skeleton and other tissues. When it is produced in excess by cancers it can cause hypercalcemia, and its local production by breast cancer cells has be ...

    Parathyroid hormone-related protein (PTHrP) plays a vital role in the embryonic development of the skeleton and other tissues. When it is produced in excess by cancers it can cause hypercalcemia, and its local production by breast cancer cells has been implicated in the pathogenesis of bone metastasis formation in that disease. Antibodies have been developed that neutralize the action of PTHrP through its receptor, parathyroid hormone receptor 1, without influencing parathyroid hormone action through the same receptor. Such neutralizing antibodies against PTHrP are therapeutically effective in animal models of the humoral hypercalcemia of malignancy and of bone metastasis formation. We have determined the crystal structure of the complex between PTHrP (residues 1-108) and a neutralizing monoclonal anti-PTHrP antibody that reveals the only point of contact is an alpha-helical structure extending from residues 14-29. Another striking feature is that the same residues that interact with the antibody also interact with parathyroid hormone receptor 1, showing that the antibody and the receptor binding site on the hormone closely overlap. The structure explains how the antibody discriminates between the two hormones and provides information that could be used in the development of novel agonists and antagonists of their common receptor.


    Related Citations: 
    • Multiple sites of contact between the carboxyl-terminal binding domain of PTHrP-(1--36) analogs and the amino-terminal extracellular domain of the PTH/PTHrP receptor identified by photoaffinity cross-linking
      Gensure, R.C.,Gardella, T.J.,Juppner, H.
      (2001) J.Biol.Chem. 276: 28650
    • Molecular properties of the PTH/PTHrP receptor
      Gardella, T.J.,Juppner, H.
      (2001) Trends Endocrinol.Metab. 12: 210


    Organizational Affiliation

    Biota Structural Biology Laboratory, St. Vincent's Institute of Medical Research, Fitzroy, Victoria 3065, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Monoclonal antibody, heavy chain, Fab fragment
A
218N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Monoclonal antibody, light chain, Fab fragment
B
220N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Parathyroid hormone-related protein
P
108Homo sapiensMutation(s): 0 
Gene Names: PTHLH (PTHRP)
Find proteins for P12272 (Homo sapiens)
Go to Gene View: PTHLH
Go to UniProtKB:  P12272
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.224 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 72.613α = 90.00
b = 96.285β = 90.00
c = 88.544γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
ADSCdata collection
DENZOdata reduction
AMoREphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-04-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2014-02-05
    Type: Database references