crystal structure of an inactive akt2 kinase domain

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 

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This is version 1.3 of the entry. See complete history


Crystal structure of an inactive akt2 kinase domain

Huang, X.Begley, M.Morgenstern, K.A.Gu, Y.Rose, P.Zhao, H.Zhu, X.

(2003) Structure 11: 21-30

  • DOI: https://doi.org/10.1016/s0969-2126(02)00937-1
  • Primary Citation of Related Structures:  
    1MRV, 1MRY

  • PubMed Abstract: 

    Akt/PKB represents a subfamily of three isoforms from the AGC serine/threonine kinase family. Amplification of Akt activity has been implicated in diseases that involve inappropriate cell survival, including a number of human malignancies. The structure of an inactive and unliganded Akt2 kinase domain reveals several features that distinguish it from other kinases. Most of the alpha helix C is disordered. The activation loop in this structure adopts a conformation that appears to sterically hinder the binding of both ATP and peptide substrate. In addition, an intramolecular disulfide bond is observed between two cysteines in the activation loop. Residues within the linker region between the N- and C-terminal lobes also contribute to the inactive conformation by partially occupying the ATP binding site.

  • Organizational Affiliation

    Amgen Cambridge Research Center, One Kendall Square, Building 1000, Cambridge, MA 02139, USA. hxin@amgen.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RAC-beta serine/threonine kinase339Homo sapiensMutation(s): 0 
Gene Names: AKT2
UniProt & NIH Common Fund Data Resources
Find proteins for P31751 (Homo sapiens)
Explore P31751 
Go to UniProtKB:  P31751
PHAROS:  P31751
GTEx:  ENSG00000105221 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP31751
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.227 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 150α = 90
b = 150β = 90
c = 39.1γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-09-23
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-04-03
    Changes: Data collection, Database references, Refinement description