4EKK

Akt1 with AMP-PNP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

An ATP-Site On-Off Switch That Restricts Phosphatase Accessibility of Akt.

Lin, K.Lin, J.Wu, W.I.Ballard, J.Lee, B.B.Gloor, S.L.Vigers, G.P.Morales, T.H.Friedman, L.S.Skelton, N.Brandhuber, B.J.

(2012) Sci.Signal. 5: ra37-ra37

  • DOI: 10.1126/scisignal.2002618
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The protein serine-threonine kinase Akt undergoes a substantial conformational change upon activation, which is induced by the phosphorylation of two critical regulatory residues, threonine 308 and serine 473. Paradoxically, treating cells with adeno ...

    The protein serine-threonine kinase Akt undergoes a substantial conformational change upon activation, which is induced by the phosphorylation of two critical regulatory residues, threonine 308 and serine 473. Paradoxically, treating cells with adenosine 5'-triphosphate (ATP)-competitive inhibitors of Akt results in increased phosphorylation of both residues. We show that binding of ATP-competitive inhibitors stabilized a conformation in which both phosphorylated sites were inaccessible to phosphatases. ATP binding also produced this protection of the phosphorylated sites, whereas interaction with its hydrolysis product adenosine 5'-diphosphate (ADP) or allosteric Akt inhibitors resulted in increased accessibility of these phosphorylated residues. ATP-competitive inhibitors mimicked ATP by targeting active Akt. Forms of Akt activated by an oncogenic mutation or myristoylation were more potently inhibited by the ATP-competitive inhibitors than was wild-type Akt. These data support a new model of kinase regulation, wherein nucleotides modulate an on-off switch in Akt through conformational changes, which is disrupted by ATP-competitive inhibitors.


    Organizational Affiliation

    Genentech Inc., South San Francisco, CA 94080, USA. klin@gene.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RAC-alpha serine/threonine-protein kinase
A, B
341Homo sapiensMutation(s): 1 
Gene Names: AKT1 (PKB, RAC)
EC: 2.7.11.1
Find proteins for P31749 (Homo sapiens)
Go to Gene View: AKT1
Go to UniProtKB:  P31749
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Glycogen synthase kinase-3 beta
C, D
10Homo sapiensMutation(s): 0 
Gene Names: GSK3B
EC: 2.7.11.26
Find proteins for P49841 (Homo sapiens)
Go to Gene View: GSK3B
Go to UniProtKB:  P49841
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download SDF File 
Download CCD File 
A, B
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
ANP
Query on ANP

Download SDF File 
Download CCD File 
A, B
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
A, B
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.217 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 86.637α = 90.00
b = 55.853β = 103.43
c = 91.402γ = 90.00
Software Package:
Software NamePurpose
CrystalCleardata collection
REFMACrefinement
MOLREPphasing
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-23
    Type: Initial release
  • Version 1.1: 2018-01-24
    Type: Structure summary