5KA4

Protein Tyrosine Phosphatase 1B T178A mutant, open state


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.185 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Conformational Rigidity and Protein Dynamics at Distinct Timescales Regulate PTP1B Activity and Allostery.

Choy, M.S.Li, Y.Machado, L.E.Kunze, M.B.Connors, C.R.Wei, X.Lindorff-Larsen, K.Page, R.Peti, W.

(2017) Mol. Cell 65: 644-658.e5

  • DOI: 10.1016/j.molcel.2017.01.014
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Protein function originates from a cooperation of structural rigidity, dynamics at different timescales, and allostery. However, how these three pillars of protein function are integrated is still only poorly understood. Here we show how these pillar ...

    Protein function originates from a cooperation of structural rigidity, dynamics at different timescales, and allostery. However, how these three pillars of protein function are integrated is still only poorly understood. Here we show how these pillars are connected in Protein Tyrosine Phosphatase 1B (PTP1B), a drug target for diabetes and cancer that catalyzes the dephosphorylation of numerous substrates in essential signaling pathways. By combining new experimental and computational data on WT-PTP1B and ≥10 PTP1B variants in multiple states, we discovered a fundamental and evolutionarily conserved CH/π switch that is critical for positioning the catalytically important WPD loop. Furthermore, our data show that PTP1B uses conformational and dynamic allostery to regulate its activity. This shows that both conformational rigidity and dynamics are essential for controlling protein activity. This connection between rigidity and dynamics at different timescales is likely a hallmark of all enzyme function.


    Organizational Affiliation

    Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI 02912, USA; Department of Chemistry, Brown University, Providence, RI 02912, USA. Electronic address: wolfgangpeti@email.arizona.edu.,Department of Biology, University of Copenhagen, 2200 Copenhagen, Denmark, Brown University, Providence, RI 02912, USA.,Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI 02912, USA.,Department of Molecular Pharmacology, Physiology and Biotechnology, Brown University, Providence, RI 02912, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein phosphatase non-receptor type 1
A
306Homo 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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.185 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.207 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 117.205α = 90.00
b = 46.501β = 90.39
c = 59.911γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-03-08
    Type: Initial release