7OPO

RSK2 N-terminal kinase domain in complex with ORF45


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.209 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

A non-catalytic herpesviral protein reconfigures ERK-RSK signaling by targeting kinase docking systems in the host.

Alexa, A.Sok, P.Gross, F.Albert, K.Kobori, E.Poti, A.L.Gogl, G.Bento, I.Kuang, E.Taylor, S.S.Zhu, F.Ciliberto, A.Remenyi, A.

(2022) Nat Commun 13: 472-472

  • DOI: https://doi.org/10.1038/s41467-022-28109-x
  • Primary Citation of Related Structures:  
    7OPM, 7OPO

  • PubMed Abstract: 

    The Kaposi's sarcoma associated herpesvirus protein ORF45 binds the extracellular signal-regulated kinase (ERK) and the p90 Ribosomal S6 kinase (RSK). ORF45 was shown to be a kinase activator in cells but a kinase inhibitor in vitro, and its effects on the ERK-RSK complex are unknown. Here, we demonstrate that ORF45 binds ERK and RSK using optimized linear binding motifs. The crystal structure of the ORF45-ERK2 complex shows how kinase docking motifs recognize the activated form of ERK. The crystal structure of the ORF45-RSK2 complex reveals an AGC kinase docking system, for which we provide evidence that it is functional in the host. We find that ORF45 manipulates ERK-RSK signaling by favoring the formation of a complex, in which activated kinases are better protected from phosphatases and docking motif-independent RSK substrate phosphorylation is selectively up-regulated. As such, our data suggest that ORF45 interferes with the natural design of kinase docking systems in the host.


  • Organizational Affiliation

    Biomolecular Interactions Research Group, Institute of Organic Chemistry, Research Center for Natural Sciences, H-1117, Budapest, Hungary.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosomal protein S6 kinase alpha-3
A, C, E, G, I
A, C, E, G, I, K
317Homo sapiensMutation(s): 0 
Gene Names: RPS6KA3ISPK1MAPKAPK1BRSK2
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for P51812 (Homo sapiens)
Explore P51812 
Go to UniProtKB:  P51812
PHAROS:  P51812
GTEx:  ENSG00000177189 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP51812
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Protein ORF45
B, D, F, H, J
B, D, F, H, J, L
63Human herpesvirus 8 strain GK18Mutation(s): 0 
Gene Names: ORF45
UniProt
Find proteins for F5HDE4 (Human herpesvirus 8 type P (isolate GK18))
Explore F5HDE4 
Go to UniProtKB:  F5HDE4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupF5HDE4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.209 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 170.29α = 90
b = 88.621β = 95.423
c = 160.346γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Research Development and Innovation Office (NKFIH)HungaryKKP 126963
European Union (EU)European UnioniNEXT Project 4788

Revision History  (Full details and data files)

  • Version 1.0: 2022-02-02
    Type: Initial release
  • Version 1.1: 2022-02-09
    Changes: Database references
  • Version 1.2: 2022-10-12
    Changes: Data collection
  • Version 1.3: 2024-01-31
    Changes: Data collection, Refinement description