Biological Assembly 1  

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 140404.95 
• Atom Count: 9264 
• Residue Count: 1208 
• Unique protein chains: 2

2B4S

Crystal structure of a complex between PTP1B and the insulin receptor tyrosine kinase

• DOI: 10.2210/pdb2B4S/pdb

• Classification: Hydrolase/transferase
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda, Escherichia coli BL21(DE3)
• Mutation(s): 2 


• Deposited: 2005-09-26 Released: 2005-11-15 
• Deposition Author(s): Li, S., Depetris, R.S., Barford, D., Chernoff, J., Hubbard, S.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.239 
• R-Value Work: 0.208 

Literature

Crystal Structure of a Complex between Protein Tyrosine Phosphatase 1B and the Insulin Receptor Tyrosine Kinase.

Li, S., Depetris, R.S., Barford, D., Chernoff, J., Hubbard, S.R.

(2005) Structure 13: 1643-1651

• PubMed: 16271887 
• DOI: 10.1016/j.str.2005.07.019


• PubMed Abstract: 
  

Protein tyrosine phosphatase 1B (PTP1B) is a highly specific negative regulator of insulin receptor signaling in vivo. The determinants of PTP1B specificity for the insulin receptor versus other receptor tyrosine kinases are largely unknown. Here, we report a crystal structure at 2.3 A resolution of the catalytic domain of PTP1B (trapping mutant) in complex with the phosphorylated tyrosine kinase domain of the insulin receptor (IRK). The crystallographic asymmetric unit contains two PTP1B-IRK complexes that interact through an IRK dimer interface. Rather than binding to a phosphotyrosine in the IRK activation loop, PTP1B binds instead to the opposite side of the kinase domain, with the phosphorylated activation loops sequestered within the IRK dimer. The crystal structure provides evidence for a noncatalytic mode of interaction between PTP1B and IRK, which could be important for the selective recruitment of PTP1B to the insulin receptor.

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Organizational Affiliation: 

Structural Biology Program, Skirball Institute of Biomolecular Medicine and Department of Pharmacology, New York University School of Medicine, New York, New York 10016, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Tyrosine-protein phosphatase, non-receptor type 1	A, C	298	Homo sapiens	Mutation(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

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
Insulin receptor	B, D	306	Homo sapiens	Mutation(s): 1  Gene Names: INSR EC: 2.7.10.1
Find proteins for P06213 (Homo sapiens) Go to Gene View: INSR Go to UniProtKB:  P06213

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
SO4	A, B, C	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PTR	B, D	L-PEPTIDE LINKING	C9 H12 N O6 P		TYR

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.239 
• R-Value Work: 0.208 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 87.472	α = 90.00
b = 88.165	β = 90.00
c = 178.040	γ = 90.00

Software Package:

Software Name	Purpose
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-09-26 
• Released Date: 2005-11-15 
• Deposition Author(s): Li, S., Depetris, R.S., Barford, D., Chernoff, J., Hubbard, S.R.

Revision History 

• Version 1.0: 2005-11-15
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance