1U46

Crystal Structure of the Unphosphorylated Kinase Domain of the Tyrosine Kinase ACK1

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Crystal Structures of the Phosphorylated and Unphosphorylated Kinase Domains of the Cdc42-associated Tyrosine Kinase ACK1.

Lougheed, J.C., Chen, R.H., Mak, P., Stout, T.J.

(2004) J Biol Chem 279: 44039-44045

  • DOI: 10.1074/jbc.M406703200
  • Primary Citation of Related Structures:  
    1U4D, 1U46, 1U54

  • PubMed Abstract: 

    • ACK1 is a multidomain non-receptor tyrosine kinase that is an effector of the Cdc42 GTPase. Members of the ACK family have a unique domain ordering and are the only tyrosine kinases known to interact with Cdc42. In contrast with many protein kinases, ACK1 has only a modest increase in activity upon phosphorylation ...

    ACK1 is a multidomain non-receptor tyrosine kinase that is an effector of the Cdc42 GTPase. Members of the ACK family have a unique domain ordering and are the only tyrosine kinases known to interact with Cdc42. In contrast with many protein kinases, ACK1 has only a modest increase in activity upon phosphorylation. We have solved the crystal structures of the human ACK1 kinase domain in both the unphosphorylated and phosphorylated states. Comparison of these structures reveals that ACK1 adopts an activated conformation independent of phosphorylation. Furthermore, the unphosphorylated activation loop is structured, and its conformation resembles that seen in activated tyrosine kinases. In addition to the apo structure, complexes are also presented with a non-hydrolyzable nucleotide analog (adenosine 5'-(beta,gamma-methylenetriphosphate)) and with the natural product debromohymenialdisine, a general inhibitor of many protein kinases. Analysis of these structures reveals a typical kinase fold, a pre-organization into the activated conformation, and an unusual substrate-binding cleft.

    Organizational Affiliation: 

    Exelixis, Incorporated, South San Francisco, California 94083-0511, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Activated CDC42 kinase 1 A, B291Homo sapiensMutation(s): 0 
Gene Names: ACK1, TNK2
EC: 2.7.1.112 (PDB Primary Data), 2.7.10.2 (UniProt), 2.7.11.1 (UniProt)
Find proteins for Q07912 (Homo sapiens)
Explore Q07912 
Go to UniProtKB:  Q07912
NIH Common Fund Data Resources
PHAROS:  Q07912
GTEx:  ENSG00000061938
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL
Download Ideal Coordinates CCD File 
B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.176α = 90
b = 43.401β = 111.82
c = 84.452γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
CCP4data scaling
EPMRphasing

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-08-31
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance