6JXW

Complex of SUMO2 bound SLS4 from ICP0.


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Viral SUMO-Targeted Ubiquitin Ligase ICP0 is Phosphorylated and Activated by Host Kinase Chk2.

Hembram, D.S.S.Negi, H.Biswas, P.Tripathi, V.Bhushan, L.Shet, D.Kumar, V.Das, R.

(2020) J Mol Biol 432: 1952-1977

  • DOI: 10.1016/j.jmb.2020.01.021
  • Primary Citation of Related Structures:  
    6JXU, 6JXW, 6JXV, 6JXX

  • PubMed Abstract: 
  • When the herpes simplex virus (HSV) genome enters the nucleus for replication and transcription, phase-segregated nuclear protein bodies called Promyelocytic leukemia protein nuclear bodies (PML NBs) colocalize with the genome and repress it. HSV enc ...

    When the herpes simplex virus (HSV) genome enters the nucleus for replication and transcription, phase-segregated nuclear protein bodies called Promyelocytic leukemia protein nuclear bodies (PML NBs) colocalize with the genome and repress it. HSV encodes a small ubiquitin-like modifier (SUMO)-targeted ubiquitin ligase (STUbL) infected cell polypeptide 0 (ICP0) that degrades PML NBs to alleviate the repression. The molecular details of the mechanism used by ICP0 to target PML NBs are unclear. Here, we identify a bona fide SUMO-interacting motif in ICP0 (SIM-like sequence [SLS] 4) that is essential and sufficient to target SUMOylated proteins in PML NBs such as the PML and Sp100. We shown that phosphorylation of SLS4 creates new salt bridges between SUMO and SLS4, increases the SUMO/SLS4 affinity, and switches ICP0 into a potent STUbL. HSV activates the Ataxia-telangiectasia-mutated kinase-Checkpoint kinase 2 (ATM-Chk2) pathway to regulate the cell cycle of the host. We report that the activated Chk2 also phosphorylates ICP0 at SLS4 and enhances its STUbL activity. Our results uncover that a viral STUbL counters antiviral response by exploiting an unprecedented cross-talk of three post-translational modifications: ubiquitination, SUMOylation, and phosphorylation.


    Organizational Affiliation

    National Center for Biological Sciences, TIFR, Bangalore, India. Electronic address: rana@ncbs.res.in.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Small ubiquitin-related modifier 2A95Homo sapiensMutation(s): 0 
Gene Names: SUMO2SMT3BSMT3H2
Find proteins for P61956 (Homo sapiens)
Explore P61956 
Go to UniProtKB:  P61956
NIH Common Fund Data Resources
PHAROS  P61956
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
SLS4-SIM from Ubiquitin E3 ligase ICP0B20Human alphaherpesvirus 1Mutation(s): 0 
EC: 2.3.2.27
Find proteins for P08393 (Human herpesvirus 1 (strain 17))
Explore P08393 
Go to UniProtKB:  P08393
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 6JXW Olderado

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other governmentIndia4120

Revision History 

  • Version 1.0: 2020-02-05
    Type: Initial release
  • Version 1.1: 2020-03-25
    Changes: Database references
  • Version 1.2: 2020-05-27
    Changes: Database references