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 

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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: 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 ...

    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. remenyi.attila@ttk.hu.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ribosomal protein S6 kinase alpha-3
A, C, E, G, I, K
A, C, E, G, I, K
317Homo sapiensMutation(s): 0 
Gene Names: RPS6KA3, ISPK1, MAPKAPK1B, RSK2
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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP51812
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein ORF45
B, D, F, H, J, L
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
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP
Download Ideal Coordinates CCD File 
M [auth A],
N [auth C],
O [auth E],
P [auth G],
Q [auth I],
M [auth A],
N [auth C],
O [auth E],
P [auth G],
Q [auth I],
R [auth K]
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N		 Ligand Interaction
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

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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