7SHQ

Structure of a functional construct of eukaryotic elongation factor 2 kinase in complex with calmodulin.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.230 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for the calmodulin-mediated activation of eukaryotic elongation factor 2 kinase.

Piserchio, A.Isiorho, E.A.Long, K.Bohanon, A.L.Kumar, E.A.Will, N.Jeruzalmi, D.Dalby, K.N.Ghose, R.

(2022) Sci Adv 8: eabo2039-eabo2039

  • DOI: 10.1126/sciadv.abo2039
  • Primary Citation of Related Structures:  
    7SHQ

  • PubMed Abstract: 
  • Translation is a tightly regulated process that ensures optimal protein quality and enables adaptation to energy/nutrient availability. The α-kinase eukaryotic elongation factor 2 kinase (eEF-2K), a key regulator of translation, specifically phosphorylates the guanosine triphosphatase eEF-2, thereby reducing its affinity for the ribosome and suppressing the elongation phase of protein synthesis ...

    Translation is a tightly regulated process that ensures optimal protein quality and enables adaptation to energy/nutrient availability. The α-kinase eukaryotic elongation factor 2 kinase (eEF-2K), a key regulator of translation, specifically phosphorylates the guanosine triphosphatase eEF-2, thereby reducing its affinity for the ribosome and suppressing the elongation phase of protein synthesis. eEF-2K activation requires calmodulin binding and autophosphorylation at the primary stimulatory site, T348. Biochemical studies predict a calmodulin-mediated activation mechanism for eEF-2K distinct from other calmodulin-dependent kinases. Here, we resolve the atomic details of this mechanism through a 2.3-Å crystal structure of the heterodimeric complex of calmodulin and the functional core of eEF-2K (eEF-2K TR ). This structure, which represents the activated T348-phosphorylated state of eEF-2K TR , highlights an intimate association of the kinase with the calmodulin C-lobe, creating an "activation spine" that connects its amino-terminal calmodulin-targeting motif to its active site through a conserved regulatory element.


    Related Citations: 
    • Structural Basis for the Calmodulin-Mediated Activation of eEF-2K
      Piserchio, A., Isiorho, E.A., Long, K., Bohanon, A.L., Kumar, E.A., Will, N., Jeruzalmi, D., Dalby, K.N., Ghose, R.
      (2022) Biorxiv --: --

    Organizational Affiliation

    PhD Program in Physics, The Graduate Center of CUNY, New York, NY 10016, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic elongation factor 2 kinase,Eukaryotic elongation factor 2 kinaseA531Homo sapiensMutation(s): 0 
Gene Names: EEF2K
EC: 2.7.11.20
UniProt & NIH Common Fund Data Resources
Find proteins for O00418 (Homo sapiens)
Explore O00418 
Go to UniProtKB:  O00418
PHAROS:  O00418
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO00418
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Calmodulin-1B148Homo sapiensMutation(s): 0 
Gene Names: CALM1CALMCAMCAM1
UniProt & NIH Common Fund Data Resources
Find proteins for P0DP23 (Homo sapiens)
Explore P0DP23 
Go to UniProtKB:  P0DP23
PHAROS:  P0DP23
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DP23
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.230 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.495α = 90
b = 58.495β = 90
c = 365.779γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
ISOLDErefinement
Cootmodel building
MR-Rosettaphasing
autoPROCdata scaling
autoPROCdata reduction

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM084278

Revision History  (Full details and data files)

  • Version 1.0: 2022-04-06
    Type: Initial release
  • Version 1.1: 2022-08-03
    Changes: Database references