Crystallographic structure of the LZII fragment (anti-parallel orientation) from JIP3

Experimental Data Snapshot

  • Resolution: 2.06 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.180 

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Structure of a truncated form of leucine zipper II of JIP3 reveals an unexpected antiparallel coiled-coil arrangement.

Llinas, P.Chenon, M.Nguyen, T.Q.Moreira, C.de Regibus, A.Coquard, A.Ramos, M.J.Guerois, R.Fernandes, P.A.Menetrey, J.

(2016) Acta Crystallogr F Struct Biol Commun 72: 198-206

  • DOI: https://doi.org/10.1107/S2053230X16001576
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    JIP3 and JIP4, two highly related scaffolding proteins for MAP kinases, are binding partners for two molecular motors as well as for the small G protein ARF6. The leucine zipper II (LZII) region of JIP3/4 is the binding site for these three partners. Previously, the crystal structure of ARF6 bound to JIP4 revealed LZII in a parallel coiled-coil arrangement. Here, the crystal structure of an N-terminally truncated form of LZII of JIP3 alone shows an unexpected antiparallel arrangement. Using molecular dynamics and modelling, the stability of this antiparallel LZII arrangement, as well as its specificity for ARF6, were investigated. This study highlights that N-terminal truncation of LZII can change its coiled-coil orientation without affecting its overall stability. Further, a conserved buried asparagine residue was pinpointed as a possible structural determinant for this dramatic structural rearrangement. Thus, LZII of JIP3/4 is a versatile structural motif, modifications of which can impact partner recognition and thus biological function.

  • Organizational Affiliation

    Laboratoire d'Enzymologie et Biochimie Structurales (LEBS), CNRS, Université Paris-Sud, 1 Avenue de la Terrasse, 91190 Gif-sur-Yvette, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
C-Jun-amino-terminal kinase-interacting protein 3
A, B, C
61Homo sapiensMutation(s): 0 
Gene Names: MAPK8IP3JIP3KIAA1066
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UPT6 (Homo sapiens)
Explore Q9UPT6 
Go to UniProtKB:  Q9UPT6
GTEx:  ENSG00000138834 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UPT6
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 2.06 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.180 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 137.826α = 90
b = 63.04β = 97.95
c = 50.219γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
XDSdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-06-10
    Type: Initial release
  • Version 1.1: 2016-07-20
    Changes: Database references
  • Version 1.2: 2018-01-24
    Changes: Structure summary
  • Version 1.3: 2024-02-28
    Changes: Data collection, Database references, Derived calculations