Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 37.85 kDa 
• Atom Count: 2679 
• Modelled Residue Count: 297 
• Deposited Residue Count: 321 
• Unique protein chains: 1

2CM7

Structural Basis for Inhibition of Protein Tyrosine Phosphatase 1B by Isothiazolidinone Heterocyclic Phosphonate Mimetics

• PDB DOI: 10.2210/pdb2CM7/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2006-05-04 Released: 2006-08-17 
• Deposition Author(s): Ala, P.J., Gonneville, L., Hillman, M.C., Becker-Pasha, M., Wei, M., Reid, B.G., Klabe, R., Yue, E.W., Wayland, B., Douty, B., Combs, A.P., Polam, P., Wasserman, Z., Bower, M., Burn, T.C., Hollis, G.F., Wynn, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.254 
• R-Value Work: 0.199 

Literature

Structural Basis for Inhibition of Protein-Tyrosine Phosphatase 1B by Isothiazolidinone Heterocyclic Phosphonate Mimetics.

Ala, P.J., Gonneville, L., Hillman, M.C., Becker-Pasha, M., Wei, M., Reid, B.G., Klabe, R., Yue, E.W., Wayland, B., Douty, B., Polam, P., Wasserman, Z., Bower, M., Combs, A.P., Burn, T.C., Hollis, G.F., Wynn, R.

(2006) J Biol Chem 281: 32784

• PubMed: 16916797 
• DOI: 10.1074/jbc.M606873200
• Primary Citation of Related Structures:  
  2CM2, 2CM3, 2CM7, 2CM8, 2CMA, 2CMB, 2CMC


• PubMed Abstract: 
  

Crystal structures of protein-tyrosine phosphatase 1B in complex with compounds bearing a novel isothiazolidinone (IZD) heterocyclic phosphonate mimetic reveal that the heterocycle is highly complementary to the catalytic pocket of the protein. The heterocycle participates in an extensive network of hydrogen bonds with the backbone of the phosphate-binding loop, Phe(182) of the flap, and the side chain of Arg(221). When substituted with a phenol, the small inhibitor induces the closed conformation of the protein and displaces all waters in the catalytic pocket. Saturated IZD-containing peptides are more potent inhibitors than unsaturated analogs because the IZD heterocycle and phenyl ring directly attached to it bind in a nearly orthogonal orientation with respect to each other, a conformation that is close to the energy minimum of the saturated IZD-phenyl moiety. These results explain why the heterocycle is a potent phosphonate mimetic and an ideal starting point for designing small nonpeptidic inhibitors.

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Organizational Affiliation: 

Incyte Corporation, Experimental Station, Route 141 and Henry Clay Road, Wilmington, DE 19880, USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TYROSINE-PROTEIN PHOSPHATASE NON-RECEPTOR TYPE 1	A	321	Homo sapiens	Mutation(s): 0  Gene Names: PTPN1, PTP1B EC: 3.1.3.48
UniProt & NIH Common Fund Data Resources
Find proteins for P18031 (Homo sapiens) Explore P18031  Go to UniProtKB:  P18031
PHAROS:  P18031

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
IZD	B [auth A]	ISOTHIAZOLIDINONE ANALOG C23 H26 N4 O6 S UILYPHAKDBTKQV-UFYCRDLUSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
IZD	BindingDB:  2CM7	Ki: 180 (nM) from 1 assay(s)
		IC50: min: 190, max: 1.80e+5 (nM) from 4 assay(s)
	Binding MOAD:  2CM7	IC50: 210 (nM) from 1 assay(s)
	PDBBind:  2CM7	IC50: 210 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.254 
• R-Value Work: 0.199 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.88	α = 90
b = 88.38	β = 96.84
c = 49.84	γ = 90

Software Package:

Software Name	Purpose
CNX	refinement
CrystalClear	data reduction
CrystalClear	data scaling
CNX	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-05-04 
• Released Date: 2006-08-17 
Deposition Author(s): Ala, P.J., Gonneville, L., Hillman, M.C., Becker-Pasha, M., Wei, M., Reid, B.G., Klabe, R., Yue, E.W., Wayland, B., Douty, B., Combs, A.P., Polam, P., Wasserman, Z., Bower, M., Burn, T.C., Hollis, G.F., Wynn, R.

Revision History  

• Version 1.0: 2006-08-17
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-07-05
  Changes: Data collection