Catalytic and ubiqutin-associated domains of MARK2/PAR-1: T208A/S212A inactive double mutant

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 

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Structure of the catalytic and ubiquitin-associated domains of the protein kinase MARK/Par-1.

Panneerselvam, S.Marx, A.Mandelkow, E.M.Mandelkow, E.

(2006) Structure 14: 173-183

  • DOI: https://doi.org/10.1016/j.str.2005.09.022
  • Primary Citation of Related Structures:  
    1Y8G, 1ZMU, 1ZMV, 1ZMW

  • PubMed Abstract: 

    The Ser/Thr kinase MARK2 phosphorylates tau protein at sites that cause detachment from microtubules in Alzheimer neurofibrillary degeneration. Homologs of MARK2 include Par-1 in C. elegans and Drosophila, which generates embryonic polarity. We report the X-ray structure of the catalytic and ubiquitin-associated domains (UBA) of human MARK2. The activity was altered by mutations in the ATP binding site and/or activation loop. The catalytic domain shows the small and large lobes typical of kinases. The substrate cleft is in an inactive, open conformation in the inactivated and the wild-type structure. The UBA domain is attached via a taut linker to the large lobe of the kinase domain and leans against a hydrophobic patch on the small lobe. The UBA structure is unusual because the orientation of its third helix is inverted, relative to previous structures. Possible implications of the structure for the regulation of kinase activity are discussed.

  • Organizational Affiliation

    Max Planck Unit for Structural Molecular Biology, Notkestrasse 85, 22607 Hamburg, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MAP/Microtubule affinity regulating kinase 2
A, B
327Rattus norvegicusMutation(s): 2 
Gene Names: Mark2
EC: (PDB Primary Data), (UniProt), (UniProt)
Find proteins for O08679 (Rattus norvegicus)
Explore O08679 
Go to UniProtKB:  O08679
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO08679
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 119.302α = 90
b = 119.302β = 90
c = 105.694γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-02-14
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-20
    Changes: Data collection, Database references
  • Version 1.4: 2023-08-23
    Changes: Data collection, Refinement description