1IRK

CRYSTAL STRUCTURE OF THE TYROSINE KINASE DOMAIN OF THE HUMAN INSULIN RECEPTOR

• PDB DOI: https://doi.org/10.2210/pdb1IRK/pdb

• Classification: TRANSFERASE (PHOSPHOTRANSFERASE)
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1995-01-02 Released: 1995-02-27 
• Deposition Author(s): Hubbard, S.R., Wei, L., Ellis, L., Hendrickson, W.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.232 
• R-Value Work: 0.196 
• R-Value Observed: 0.196 

Literature

Crystal structure of the tyrosine kinase domain of the human insulin receptor.

Hubbard, S.R., Wei, L., Ellis, L., Hendrickson, W.A.

(1994) Nature 372: 746-754

• PubMed: 7997262 
• DOI: https://doi.org/10.1038/372746a0
• Primary Citation of Related Structures:  
  1IRK


• PubMed Abstract: 
  

  The X-ray crystal structure of the tyrosine kinase domain of the human insulin receptor has been determined by multiwavelength anomalous diffraction phasing and refined to 2.1 A resolution. The structure reveals the determinants of substrate preference for tyrosine rather than serine or threonine and a novel autoinhibition mechanism whereby one of the tyrosines that is autophosphorylated in response to insulin, Tyr 1,162, is bound in the active site.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 35.25 kDa 
• Atom Count: 2,585 
• Modelled Residue Count: 303 
• Deposited Residue Count: 306 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
INSULIN RECEPTOR TYROSINE KINASE DOMAIN	A	306	Homo sapiens	Mutation(s): 0  EC: 2.7.10.1
UniProt & NIH Common Fund Data Resources
Find proteins for P06213 (Homo sapiens) Explore P06213  Go to UniProtKB:  P06213
PHAROS:  P06213 GTEx:  ENSG00000171105

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EMC	B [auth A], C [auth A]	ETHYL MERCURY ION C2 H5 Hg MJOUBOKSWBMNGQ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.232 
• R-Value Work: 0.196 
• R-Value Observed: 0.196 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.03	α = 90
b = 72.99	β = 90
c = 89.18	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-02-27 
Deposition Author(s): Hubbard, S.R., Wei, L., Ellis, L., Hendrickson, W.A.

Revision History  

• Version 1.0: 1995-02-27
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations, Other