1PTY

CRYSTAL STRUCTURE OF PROTEIN TYROSINE PHOSPHATASE 1B COMPLEXED WITH TWO PHOSPHOTYROSINE MOLECULES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Identification of a second aryl phosphate-binding site in protein-tyrosine phosphatase 1B: a paradigm for inhibitor design.

Puius, Y.A.Zhao, Y.Sullivan, M.Lawrence, D.S.Almo, S.C.Zhang, Z.Y.

(1997) Proc.Natl.Acad.Sci.USA 94: 13420-13425

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The structure of the catalytically inactive mutant (C215S) of the human protein-tyrosine phosphatase 1B (PTP1B) has been solved to high resolution in two complexes. In the first, crystals were grown in the presence of bis-(para-phosphophenyl) methane ...

    The structure of the catalytically inactive mutant (C215S) of the human protein-tyrosine phosphatase 1B (PTP1B) has been solved to high resolution in two complexes. In the first, crystals were grown in the presence of bis-(para-phosphophenyl) methane (BPPM), a synthetic high-affinity low-molecular weight nonpeptidic substrate (Km = 16 microM), and the structure was refined to an R-factor of 18. 2% at 1.9 A resolution. In the second, crystals were grown in a saturating concentration of phosphotyrosine (pTyr), and the structure was refined to an R-factor of 18.1% at 1.85 A. Difference Fourier maps showed that BPPM binds PTP1B in two mutually exclusive modes, one in which it occupies the canonical pTyr-binding site (the active site), and another in which a phosphophenyl moiety interacts with a set of residues not previously observed to bind aryl phosphates. The identification of a second pTyr molecule at the same site in the PTP1B/C215S-pTyr complex confirms that these residues constitute a low-affinity noncatalytic aryl phosphate-binding site. Identification of a second aryl phosphate binding site adjacent to the active site provides a paradigm for the design of tight-binding, highly specific PTP1B inhibitors that can span both the active site and the adjacent noncatalytic site. This design can be achieved by tethering together two small ligands that are individually targeted to the active site and the proximal noncatalytic site.


    Related Citations: 
    • Crystal Structure of Human Protein Tyrosine Phosphatase 1B
      Barford, D.,Flint, A.J.,Tonks, N.K.
      (1994) Science 263: 1397
    • Potent Low Molecular Weight Substrates for Protein-Tyrosine Phosphatase
      Montserat, J.,Chen, L.,Lawrence, D.S.,Zhang, Z.Y.
      (1996) J.Biol.Chem. 271: 7868
    • Structural Basis for Phosphotyrosine Peptide Recognition by Protein Tyrosine Phosphatase 1B
      Jia, Z.,Barford, D.,Flint, A.J.,Tonks, N.K.
      (1995) Science 268: 1754


    Organizational Affiliation

    Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY 10461, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN TYROSINE PHOSPHATASE 1B
A
321Homo sapiensMutation(s): 1 
Gene Names: PTPN1 (PTP1B)
EC: 3.1.3.48
Find proteins for P18031 (Homo sapiens)
Go to Gene View: PTPN1
Go to UniProtKB:  P18031
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
PTR
Query on PTR

Download SDF File 
Download CCD File 
A
O-PHOSPHOTYROSINE
PHOSPHONOTYROSINE
C9 H12 N O6 P
DCWXELXMIBXGTH-QMMMGPOBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Work: 0.181 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 87.909α = 90.00
b = 87.909β = 90.00
c = 103.822γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORphasing
X-PLORmodel building
X-PLORrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-01-21
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance