3TNI

structure of CDK9/cyclin T F241L


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.23 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.163 
  • R-Value Observed: 0.166 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The CDK9 C-helix Exhibits Conformational Plasticity That May Explain the Selectivity of CAN508.

Baumli, S.Hole, A.J.Noble, M.E.Endicott, J.A.

(2012) ACS Chem Biol 7: 811-816

  • DOI: https://doi.org/10.1021/cb2004516
  • Primary Citation of Related Structures:  
    3TN8, 3TNH, 3TNI, 3TNW

  • PubMed Abstract: 

    CDK9 is the kinase of positive transcription elongation factor b and facilitates the transition of paused RNA polymerase II to processive transcription elongation. CDK9 is a validated target for the treatment of cancer, cardiac hypertrophy, and human immunodeficiency virus. Here we analyze different CDK9/cyclin T variants to identify a form of the complex amenable to use in inhibitor design. To demonstrate the utility of this system, we have determined the crystal structures of CDK9/cyclin T and CDK2/cyclin A bound to the CDK9-specific inhibitor CAN508. Comparison of the structures reveals CDK9-specific conformational changes and identifies a CDK9-specific hydrophobic pocket, adjacent to the αC-helix. By comparison with a previously published structure of CDK9/cyclin T/human immunodeficiency virus TAT we find that the CDK9 αC-helix has a degree of conformational variability that has the potential to be exploited for inhibitor design.


  • Organizational Affiliation

    Northern Institute for Cancer Research, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, U.K. sonja.baumli@ncl.ac.uk


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cyclin-dependent kinase 9331Homo sapiensMutation(s): 0 
Gene Names: CDC2L4CDK9
EC: 2.7.11.22 (PDB Primary Data), 2.7.11.23 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P50750 (Homo sapiens)
Explore P50750 
Go to UniProtKB:  P50750
PHAROS:  P50750
GTEx:  ENSG00000136807 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP50750
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Cyclin-T1259Homo sapiensMutation(s): 1 
Gene Names: CCNT1
UniProt & NIH Common Fund Data Resources
Find proteins for O60563 (Homo sapiens)
Explore O60563 
Go to UniProtKB:  O60563
PHAROS:  O60563
GTEx:  ENSG00000129315 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO60563
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
TPO
Query on TPO
A
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.23 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.163 
  • R-Value Observed: 0.166 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 173.61α = 90
b = 173.61β = 90
c = 97.47γ = 120
Software Package:
Software NamePurpose
SCALAdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
xia2data scaling
XSCALEdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-02-15
    Type: Initial release
  • Version 1.1: 2012-05-30
    Changes: Database references