6B95

Multiconformer model of K197C PTP1B tethered to compound 2 at 100 K


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

An expanded allosteric network in PTP1B by multitemperature crystallography, fragment screening, and covalent tethering.

Keedy, D.A.Hill, Z.B.Biel, J.T.Kang, E.Rettenmaier, T.J.Brandao-Neto, J.Pearce, N.M.von Delft, F.Wells, J.A.Fraser, J.S.

(2018) Elife 7

  • DOI: 10.7554/eLife.36307
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Allostery is an inherent feature of proteins, but it remains challenging to reveal the mechanisms by which allosteric signals propagate. A clearer understanding of this intrinsic circuitry would afford new opportunities to modulate protein function. ...

    Allostery is an inherent feature of proteins, but it remains challenging to reveal the mechanisms by which allosteric signals propagate. A clearer understanding of this intrinsic circuitry would afford new opportunities to modulate protein function. Here, we have identified allosteric sites in protein tyrosine phosphatase 1B (PTP1B) by combining multiple-temperature X-ray crystallography experiments and structure determination from hundreds of individual small-molecule fragment soaks. New modeling approaches reveal 'hidden' low-occupancy conformational states for protein and ligands. Our results converge on allosteric sites that are conformationally coupled to the active-site WPD loop and are hotspots for fragment binding. Targeting one of these sites with covalently tethered molecules or mutations allosterically inhibits enzyme activity. Overall, this work demonstrates how the ensemble nature of macromolecular structure, revealed here by multitemperature crystallography, can elucidate allosteric mechanisms and open new doors for long-range control of protein function.


    Organizational Affiliation

    Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, United States.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein phosphatase non-receptor type 1
A
321Homo sapiensMutation(s): 3 
Gene Names: PTPN1PTP1B
EC: 3.1.3.48
Find proteins for P18031 (Homo sapiens)
Go to UniProtKB:  P18031
NIH Common Fund Data Resources
PHAROS  P18031
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
D0P
Query on D0P

Download CCD File 
A
N-(2',4'-difluoro-4-hydroxy[1,1'-biphenyl]-3-yl)-2-sulfanylacetamide
C14 H11 F2 N O2 S
LYFMUHLLGBRDOD-UHFFFAOYSA-N
 Ligand Interaction
TRS
Query on TRS

Download CCD File 
A
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.188 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.96α = 90
b = 87.96β = 90
c = 104.63γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of HealthUnited States--

Revision History 

  • Version 1.0: 2018-06-20
    Type: Initial release
  • Version 1.1: 2019-02-20
    Changes: Author supporting evidence, Data collection