5JNV

Crystal structure of bovine low molecular weight protein tyrosine phosphatase (LMPTP) mutant (W49Y N50E) complexed with HEPES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.154 
  • R-Value Observed: 0.156 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Diabetes reversal by inhibition of the low-molecular-weight tyrosine phosphatase.

Stanford, S.M.Aleshin, A.E.Zhang, V.Ardecky, R.J.Hedrick, M.P.Zou, J.Ganji, S.R.Bliss, M.R.Yamamoto, F.Bobkov, A.A.Kiselar, J.Liu, Y.Cadwell, G.W.Khare, S.Yu, J.Barquilla, A.Chung, T.D.Y.Mustelin, T.Schenk, S.Bankston, L.A.Liddington, R.C.Pinkerton, A.B.Bottini, N.

(2017) Nat Chem Biol 13: 624-632

  • DOI: 10.1038/nchembio.2344
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Obesity-associated insulin resistance plays a central role in type 2 diabetes. As such, tyrosine phosphatases that dephosphorylate the insulin receptor (IR) are potential therapeutic targets. The low-molecular-weight protein tyrosine phosphatase (LMP ...

    Obesity-associated insulin resistance plays a central role in type 2 diabetes. As such, tyrosine phosphatases that dephosphorylate the insulin receptor (IR) are potential therapeutic targets. The low-molecular-weight protein tyrosine phosphatase (LMPTP) is a proposed IR phosphatase, yet its role in insulin signaling in vivo has not been defined. Here we show that global and liver-specific LMPTP deletion protects mice from high-fat diet-induced diabetes without affecting body weight. To examine the role of the catalytic activity of LMPTP, we developed a small-molecule inhibitor with a novel uncompetitive mechanism, a unique binding site at the opening of the catalytic pocket, and an exquisite selectivity over other phosphatases. This inhibitor is orally bioavailable, and it increases liver IR phosphorylation in vivo and reverses high-fat diet-induced diabetes. Our findings suggest that LMPTP is a key promoter of insulin resistance and that LMPTP inhibitors would be beneficial for treating type 2 diabetes.


    Organizational Affiliation

    Department of Medicine, University of California, San Diego, La Jolla, California, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Low molecular weight phosphotyrosine protein phosphataseA159Bos taurusMutation(s): 0 
Gene Names: ACP1
EC: 3.1.3.48 (PDB Primary Data), 3.1.3.2 (UniProt)
Find proteins for P11064 (Bos taurus)
Explore P11064 
Go to UniProtKB:  P11064
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

Download CCD File 
A
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
DMS
Query on DMS

Download CCD File 
A
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.154 
  • R-Value Observed: 0.156 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.944α = 90
b = 122.939β = 90
c = 44.888γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)United StatesR01DK106233

Revision History 

  • Version 1.0: 2017-03-29
    Type: Initial release
  • Version 1.1: 2017-04-12
    Changes: Database references
  • Version 1.2: 2017-05-24
    Changes: Database references
  • Version 1.3: 2017-09-20
    Changes: Author supporting evidence
  • Version 1.4: 2019-12-25
    Changes: Author supporting evidence