1YIB

Crystal Structure of the Human EB1 C-terminal Dimerization Domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural determinants for EB1-mediated recruitment of APC and spectraplakins to the microtubule plus end

Slep, K.C.Rogers, S.L.Elliott, S.L.Ohkura, H.Kolodziej, P.A.Vale, R.D.

(2005) J.Cell Biol. 168: 587-598

  • DOI: 10.1083/jcb.200410114
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • EB1 is a member of a conserved protein family that localizes to growing microtubule plus ends. EB1 proteins also recruit cell polarity and signaling molecules to microtubule tips. However, the mechanism by which EB1 recognizes cargo is unknown. Here, ...

    EB1 is a member of a conserved protein family that localizes to growing microtubule plus ends. EB1 proteins also recruit cell polarity and signaling molecules to microtubule tips. However, the mechanism by which EB1 recognizes cargo is unknown. Here, we have defined a repeat sequence in adenomatous polyposis coli (APC) that binds to EB1's COOH-terminal domain and identified a similar sequence in members of the microtubule actin cross-linking factor (MACF) family of spectraplakins. We show that MACFs directly bind EB1 and exhibit EB1-dependent plus end tracking in vivo. To understand how EB1 recognizes APC and MACFs, we solved the crystal structure of the EB1 COOH-terminal domain. The structure reveals a novel homodimeric fold comprised of a coiled coil and four-helix bundle motif. Mutational analysis reveals that the cargo binding site for MACFs maps to a cluster of conserved residues at the junction between the coiled coil and four-helix bundle. These results provide a structural understanding of how EB1 binds two regulators of microtubule-based cell polarity.


    Organizational Affiliation

    The Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94107, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Microtubule-associated protein RP/EB family member 1
A
76Homo sapiensMutation(s): 0 
Gene Names: MAPRE1
Find proteins for Q15691 (Homo sapiens)
Go to Gene View: MAPRE1
Go to UniProtKB:  Q15691
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.221 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 33.153α = 90.00
b = 108.332β = 90.00
c = 37.097γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-03-08
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance