3D94

Crystal structure of the insulin-like growth factor-1 receptor kinase in complex with PQIP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Small-molecule inhibition and activation-loop trans-phosphorylation of the IGF1 receptor

Wu, J.Li, W.Craddock, B.P.Foreman, K.W.Mulvihill, M.J.Ji, Q.S.Miller, W.T.Hubbard, S.R.

(2008) Embo J. 27: 1985-1994

  • DOI: 10.1038/emboj.2008.116

  • PubMed Abstract: 
  • The insulin-like growth factor-1 receptor (IGF1R) is a receptor tyrosine kinase (RTK) that has a critical role in mitogenic signalling during embryogenesis and an antiapoptotic role in the survival and progression of many human tumours. Here, we pres ...

    The insulin-like growth factor-1 receptor (IGF1R) is a receptor tyrosine kinase (RTK) that has a critical role in mitogenic signalling during embryogenesis and an antiapoptotic role in the survival and progression of many human tumours. Here, we present the crystal structure of the tyrosine kinase domain of IGF1R (IGF1RK), in its unphosphorylated state, in complex with a novel compound, cis-3-[3-(4-methyl-piperazin-l-yl)-cyclobutyl]-1-(2-phenyl-quinolin-7-yl)-imidazo[1,5-a]pyrazin-8-ylamine (PQIP), which we show is a potent inhibitor of both the unphosphorylated (basal) and phosphorylated (activated) states of the kinase. PQIP interacts with residues in the ATP-binding pocket and in the activation loop, which confers specificity for IGF1RK and the highly related insulin receptor (IR) kinase. In this crystal structure, the IGF1RK active site is occupied by Tyr1135 from the activation loop of an symmetry (two-fold)-related molecule. This dimeric arrangement affords, for the first time, a visualization of the initial trans-phosphorylation event in the activation loop of an RTK, and provides a molecular rationale for a naturally occurring mutation in the activation loop of the IR that causes type II diabetes mellitus.


    Organizational Affiliation

    Structural Biology Program, Kimmel Center for Biology and Medicine of the Skirball Institute of Biomolecular Medicine, Department of Pharmacology, New York University School of Medicine, New York, NY 10016, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Insulin-like growth factor 1 receptor beta chain
A
301Homo sapiensMutation(s): 0 
Gene Names: IGF1R
EC: 2.7.10.1
Find proteins for P08069 (Homo sapiens)
Go to Gene View: IGF1R
Go to UniProtKB:  P08069
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
D94
Query on D94

Download SDF File 
Download CCD File 
A
3-[cis-3-(4-methylpiperazin-1-yl)cyclobutyl]-1-(2-phenylquinolin-7-yl)imidazo[1,5-a]pyrazin-8-amine
C30 H31 N7
PDJARQSWGDDFHH-PSWAGMNNSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MHO
Query on MHO
A
L-PEPTIDE LINKINGC5 H11 N O3 SMET
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
D94IC50: 19 - 65 nM (99) BINDINGDB
D94IC50: 118 nM BINDINGMOAD
D94Ki: 157 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.198 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 208.182α = 90.00
b = 208.182β = 90.00
c = 50.853γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
AMoREphasing
ADSCdata collection
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-07-29
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance