4UX9

Crystal structure of JNK1 bound to a MKK7 docking motif

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 

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This is version 1.3 of the entry. See complete history. 


Literature

Structure and Dynamics of the Mkk7-Jnk Signaling Complex.

Kragelj, J., Palencia, A., Nanao, M.H., Maurin, D., Bouvignies, G., Blackledge, M., Jensen, M.R.

(2015) Proc Natl Acad Sci U S A 112: 3409

  • DOI: 10.1073/pnas.1419528112
  • Primary Citation of Related Structures:  
    4UX9

  • PubMed Abstract: 

    • Signaling specificity in the mitogen-activated protein kinase (MAPK) pathways is controlled by disordered domains of the MAPK kinases (MKKs) that specifically bind to their cognate MAPKs via linear docking motifs. MKK7 activates the c-Jun N-terminal ...

    Signaling specificity in the mitogen-activated protein kinase (MAPK) pathways is controlled by disordered domains of the MAPK kinases (MKKs) that specifically bind to their cognate MAPKs via linear docking motifs. MKK7 activates the c-Jun N-terminal kinase (JNK) pathway and is the only MKK containing three motifs within its regulatory domain. Here, we characterize the conformational behavior and interaction mechanism of the MKK7 regulatory domain. Using NMR spectroscopy, we develop an atomic resolution ensemble description of MKK7, revealing highly diverse intrinsic conformational propensities of the three docking sites, suggesting that prerecognition sampling of the bound-state conformation is not prerequisite for binding. Although the different sites exhibit similar affinities for JNK1, interaction kinetics differ considerably. Importantly, we determine the crystal structure of JNK1 in complex with the second docking site of MKK7, revealing two different binding modes of the docking motif correlating with observations from NMR exchange spectroscopy. Our results provide unique insight into how signaling specificity is regulated by linear motifs and, in general, into the role of conformational disorder in MAPK signaling.

    Organizational Affiliation: 

    Université Grenoble Alpes, Centre National de la Recherche Scientifique, and Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Institut de Biologie Structurale, F-38044 Grenoble, France; and malene.ringkjobing-jensen@ibs.fr martin.blackledge@ibs.fr.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MITOGEN-ACTIVATED PROTEIN KINASE 8A, B, C, D364Homo sapiensMutation(s): 0 
Gene Names: MAPK8, JNK1, PRKM8, SAPK1, SAPK1C
EC: 2.7.11.24
Find proteins for P45983 (Homo sapiens)
Explore P45983 
Go to UniProtKB:  P45983
NIH Common Fund Data Resources
PHAROS  P45983
GTEx  ENSG00000107643
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DUAL SPECIFICITY MITOGEN-ACTIVATED PROTEIN KINASE KINASE 7F, G, H, I12Homo sapiensMutation(s): 0 
Gene Names: MAP2K7, JNKK2, MEK7, MKK7, PRKMK7, SKK4
EC: 2.7.12.2
Find proteins for O14733 (Homo sapiens)
Explore O14733 
Go to UniProtKB:  O14733
NIH Common Fund Data Resources
PHAROS  O14733
GTEx  ENSG00000076984
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: 0.240 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 108.666α = 90
b = 180.159β = 110.3
c = 101.144γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-03-25
    Type: Initial release
  • Version 1.1: 2016-04-06
    Changes: Database references
  • Version 1.2: 2017-09-27
    Changes: Data collection
  • Version 1.3: 2020-08-19
    Changes: Derived calculations, Other