1JOW

Crystal structure of a complex of human CDK6 and a viral cyclin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.323 
  • R-Value Work: 0.266 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for CDK6 activation by a virus-encoded cyclin.

Schulze-Gahmen, U.Kim, S.H.

(2002) Nat.Struct.Mol.Biol. 9: 177-181

  • DOI: 10.1038/nsb756

  • PubMed Abstract: 
  • Cyclin from herpesvirus saimiri (Vcyclin) preferentially forms complexes with cyclin-dependent kinase 6 (CDK6) from primate host cells. These complexes show higher kinase activity than host cell CDKs in complex with cellular cyclins and are resistant ...

    Cyclin from herpesvirus saimiri (Vcyclin) preferentially forms complexes with cyclin-dependent kinase 6 (CDK6) from primate host cells. These complexes show higher kinase activity than host cell CDKs in complex with cellular cyclins and are resistant to cyclin-dependent inhibitory proteins (CDKIs). The crystal structure of human CDK6--Vcyclin in an active state was determined to 3.1 A resolution to better understand the structural basis of CDK6 activation by viral cyclins. The unphosphorylated CDK6 in complex with Vcyclin has many features characteristic of cyclinA-activated, phosphorylated CDK2. There are, however, differences in the conformation at the tip of the T-loop and its interactions with Vcyclin. Residues in the N-terminal extension of Vcyclin wrap around the tip of the CDK6 T-loop and form a short beta-sheet with the T-loop backbone. These interactions lead to a 20% larger buried surface in the CDK6--Vcyclin interface than in the CDK2--cyclinA complex and are probably largely responsible for the specificity of Vcyclin for CDK6 and resistance of the complex to inhibition by INK-type CDKIs.


    Related Citations: 
    • Crystallization of a Complex between Human CDK6 and a Virus-encoded Cyclin is Critically Dependent on the Addition of Small Charged Organic Molecules
      Schulze-Gahmen, U.,Kim, S.H.
      () TO BE PUBLISHED --: --


    Organizational Affiliation

    Physical Bioscience Division at E. O. Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYCLIN HOMOLOG
A
254Saimiriine herpesvirus 2 (strain 11)Gene Names: 72 (ECLF2)
Find proteins for Q01043 (Saimiriine herpesvirus 2 (strain 11))
Go to UniProtKB:  Q01043
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CELL DIVISION PROTEIN KINASE 6
B
308Homo sapiensGene Names: CDK6 (CDKN6)
EC: 2.7.11.22
Find proteins for Q00534 (Homo sapiens)
Go to Gene View: CDK6
Go to UniProtKB:  Q00534
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.323 
  • R-Value Work: 0.266 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 70.140α = 90.00
b = 70.140β = 90.00
c = 448.770γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
AMoREphasing
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-02-27
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance