5FWK

Atomic cryoEM structure of Hsp90-Cdc37-Cdk4 complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 2.1 of the entry. See complete history

Literature

Atomic Structure of Hsp90-Cdc37-Cdk4 Reveals that Hsp90 Traps and Stabilizes an Unfolded Kinase.

Verba, K.A.Wang, R.Y.Arakawa, A.Liu, Y.Shirouzu, M.Yokoyama, S.Agard, D.A.

(2016) Science 352: 1542

  • DOI: 10.1126/science.aaf5023
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Hsp90 molecular chaperone and its Cdc37 cochaperone help stabilize and activate more than half of the human kinome. However, both the mechanism by which these chaperones assist their "client" kinases and the reason why some kinases are addicted t ...

    The Hsp90 molecular chaperone and its Cdc37 cochaperone help stabilize and activate more than half of the human kinome. However, both the mechanism by which these chaperones assist their "client" kinases and the reason why some kinases are addicted to Hsp90 while closely related family members are independent are unknown. Our structural understanding of these interactions is lacking, as no full-length structures of human Hsp90, Cdc37, or either of these proteins with a kinase have been elucidated. Here we report a 3.9 angstrom cryo-electron microscopy structure of the Hsp90-Cdc37-Cdk4 kinase complex. Surprisingly, the two lobes of Cdk4 are completely separated with the β4-β5 sheet unfolded. Cdc37 mimics part of the kinase N lobe, stabilizing an open kinase conformation by wedging itself between the two lobes. Finally, Hsp90 clamps around the unfolded kinase β5 strand and interacts with exposed N- and C-lobe interfaces, protecting the kinase in a trapped unfolded state. On the basis of this structure and an extensive amount of previously collected data, we propose unifying conceptual and mechanistic models of chaperone-kinase interactions.


    Organizational Affiliation

    Howard Hughes Medical Institute (HHMI) and the Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, CA 94158, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEAT SHOCK PROTEIN HSP 90 BETA
A, B
727Homo sapiensMutation(s): 0 
Gene Names: HSP90AB1 (HSP90B, HSPC2, HSPCB)
Find proteins for P08238 (Homo sapiens)
Go to Gene View: HSP90AB1
Go to UniProtKB:  P08238
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HSP90 CO-CHAPERONE CDC37
E
378Homo sapiensMutation(s): 0 
Gene Names: CDC37 (CDC37A)
Find proteins for Q16543 (Homo sapiens)
Go to Gene View: CDC37
Go to UniProtKB:  Q16543
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
CYCLIN-DEPENDENT KINASE 4
K
310Homo sapiensMutation(s): 0 
Gene Names: CDK4
EC: 2.7.11.22
Find proteins for P11802 (Homo sapiens)
Go to Gene View: CDK4
Go to UniProtKB:  P11802
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download SDF File 
Download CCD File 
A, B
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
E
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-07-06
    Type: Initial release
  • Version 1.1: 2017-04-19
    Type: Other
  • Version 1.2: 2017-08-02
    Type: Data collection
  • Version 2.0: 2017-08-09
    Type: Atomic model
  • Version 2.1: 2017-08-30
    Type: Data collection