5VF6

Crystal structure of single chain variable fragment (scFv45).


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.635 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Harnessing insulin- and leptin-induced oxidation of PTP1B for therapeutic development.

Krishnan, N.Bonham, C.A.Rus, I.A.Shrestha, O.K.Gauss, C.M.Haque, A.Tocilj, A.Joshua-Tor, L.Tonks, N.K.

(2018) Nat Commun 9: 283-283

  • DOI: 10.1038/s41467-017-02252-2

  • PubMed Abstract: 
  • The protein tyrosine phosphatase PTP1B is a major regulator of glucose homeostasis and energy metabolism, and a validated target for therapeutic intervention in diabetes and obesity. Nevertheless, it is a challenging target for inhibitor development. ...

    The protein tyrosine phosphatase PTP1B is a major regulator of glucose homeostasis and energy metabolism, and a validated target for therapeutic intervention in diabetes and obesity. Nevertheless, it is a challenging target for inhibitor development. Previously, we generated a recombinant antibody (scFv45) that recognizes selectively the oxidized, inactive conformation of PTP1B. Here, we provide a molecular basis for its interaction with reversibly oxidized PTP1B. Furthermore, we have identified a small molecule inhibitor that mimics the effects of scFv45. Our data provide proof-of-concept that stabilization of PTP1B in an inactive, oxidized conformation by small molecules can promote insulin and leptin signaling. This work illustrates a novel paradigm for inhibiting the signaling function of PTP1B that may be exploited for therapeutic intervention in diabetes and obesity.


    Organizational Affiliation

    Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY, 11724, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
single chain variable fragment
A
250N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.635 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.172 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 97.232α = 90.00
b = 97.232β = 90.00
c = 61.260γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata scaling
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesGM55989

Revision History 

  • Version 1.0: 2018-01-31
    Type: Initial release