3A61

Crystal structure of unphosphorylated p70S6K1 (Form II)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.43 Å
  • R-Value Free: 0.349 
  • R-Value Work: 0.265 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

Structural basis of human p70 ribosomal S6 kinase-1 regulation by activation loop phosphorylation.

Sunami, T., Byrne, N., Diehl, R.E., Funabashi, K., Hall, D.L., Ikuta, M., Patel, S.B., Shipman, J.M., Smith, R.F., Takahashi, I., Zugay-Murphy, J., Iwasawa, Y., Lumb, K.J., Munshi, S.K., Sharma, S.

(2010) J.Biol.Chem. 285: 4587-4594

  • DOI: 10.1074/jbc.M109.040667
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • p70 ribosomal S6 kinase (p70S6K) is a downstream effector of the mTOR signaling pathway involved in cell proliferation, cell growth, cell-cycle progression, and glucose homeostasis. Multiple phosphorylation events within the catalytic, autoinhibitory ...

    p70 ribosomal S6 kinase (p70S6K) is a downstream effector of the mTOR signaling pathway involved in cell proliferation, cell growth, cell-cycle progression, and glucose homeostasis. Multiple phosphorylation events within the catalytic, autoinhibitory, and hydrophobic motif domains contribute to the regulation of p70S6K. We report the crystal structures of the kinase domain of p70S6K1 bound to staurosporine in both the unphosphorylated state and in the 3'-phosphoinositide-dependent kinase-1-phosphorylated state in which Thr-252 of the activation loop is phosphorylated. Unphosphorylated p70S6K1 exists in two crystal forms, one in which the p70S6K1 kinase domain exists as a monomer and the other as a domain-swapped dimer. The crystal structure of the partially activated kinase domain that is phosphorylated within the activation loop reveals conformational ordering of the activation loop that is consistent with a role in activation. The structures offer insights into the structural basis of the 3'-phosphoinositide-dependent kinase-1-induced activation of p70S6K and provide a platform for the rational structure-guided design of specific p70S6K inhibitors.

    Organizational Affiliation: 

    Department of Chemistry, Tsukuba Research Institute, Banyu Pharmaceutical Company, Limited, Tsukuba, Ibaraki, 300-2611, Japan. sunami.tomoko@jaea.go.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ribosomal protein S6 kinase beta-1
A
327Homo sapiensMutation(s): 0 
Gene Names: RPS6KB1 (STK14A)
EC: 2.7.11.1
Find proteins for P23443 (Homo sapiens)
Go to Gene View: RPS6KB1
Go to UniProtKB:  P23443
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
STU
Query on STU
Download SDF File 
Download CCD File 
A
STAUROSPORINE
C28 H26 N4 O3
HKSZLNNOFSGOKW-FYTWVXJKSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.43 Å
  • R-Value Free: 0.349 
  • R-Value Work: 0.265 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 56.636α = 90.00
b = 63.014β = 90.00
c = 98.349γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
CrystalCleardata collection
AMoREphasing
CNXrefinement
HKL-2000data scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-10-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance