6RFP

ERK2 MAP kinase with mutations at Helix-G


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.74 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.147 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

The bacterial metalloprotease NleD selectively cleaves mitogen-activated protein kinases that have high flexibility in their activation loop.

Gur-Arie, L.Eitan-Wexler, M.Weinberger, N.Rosenshine, I.Livnah, O.

(2020) J Biol Chem 295: 9409-9420

  • DOI: https://doi.org/10.1074/jbc.RA120.013590
  • Primary Citation of Related Structures:  
    6QYX, 6RFO, 6RFP

  • PubMed Abstract: 

    Microbial pathogens often target the host mitogen-activated protein kinase (MAPK) network to suppress host immune responses. We previously identified a bacterial type III secretion system effector, termed NleD, a metalloprotease that inactivates MAPKs by specifically cleaving their activation loop. Here, we show that NleDs form a growing family of virulence factors harbored by human and plant pathogens as well as insect symbionts. These NleDs disable specifically Jun N-terminal kinases (JNKs) and p38s that are required for host immune response, whereas extracellular signal-regulated kinase (ERK), which is essential for host cell viability, remains intact. We investigated the mechanism that makes ERK resistant to NleD cleavage. Biochemical and structural analyses revealed that NleD exclusively targets activation loops with high conformational flexibility. Accordingly, NleD cleaved the flexible loops of JNK and p38 but not the rigid loop of ERK. Our findings elucidate a compelling mechanism of native substrate proteolysis that is promoted by entropy-driven specificity. We propose that such entropy-based selectivity is a general attribute of proteolytic enzymes.


  • Organizational Affiliation

    Department Microbiology and Molecular Genetics, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 1378Rattus norvegicusMutation(s): 3 
Gene Names: Mapk1Erk2MapkPrkm1
EC: 2.7.11.24
UniProt
Find proteins for P63086 (Rattus norvegicus)
Explore P63086 
Go to UniProtKB:  P63086
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63086
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.74 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.147 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.74α = 90
b = 68.81β = 110.14
c = 60.81γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Israel Science FoundationIsrael1422/16

Revision History  (Full details and data files)

  • Version 1.0: 2020-05-13
    Type: Initial release
  • Version 1.1: 2020-05-20
    Changes: Database references
  • Version 1.2: 2020-05-27
    Changes: Database references
  • Version 1.3: 2020-07-22
    Changes: Database references
  • Version 1.4: 2024-01-24
    Changes: Data collection, Database references, Refinement description