1U4D

Structure of the ACK1 Kinase Domain bound to Debromohymenialdisine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 

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This is version 1.3 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: https://doi.org/10.1074/jbc.M406703200
  • Primary Citation of Related Structures:  
    1U46, 1U4D, 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. 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)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Activated CDC42 kinase 1
A, B
291Homo sapiensMutation(s): 0 
Gene Names: ACK1
EC: 2.7.1.112
UniProt & NIH Common Fund Data Resources
Find proteins for Q07912 (Homo sapiens)
Explore Q07912 
Go to UniProtKB:  Q07912
PHAROS:  Q07912
GTEx:  ENSG00000061938 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ07912
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.552α = 90
b = 42.918β = 112.02
c = 85.149γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
CCP4data scaling
MOLREPphasing

Structure Validation

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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
  • Version 1.3: 2023-08-23
    Changes: Data collection, Database references, Derived calculations, Refinement description