1SH6

Crystal structure of actin-binding domain of mouse plectin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Actin-binding domain of mouse plectin: crystal structure and binding to vimentin

Sevcik, J.Urbanikova, L.Kostan, J.Janda, L.Wiche, G.

(2004) Eur.J.Biochem. 271: 1873-1884

  • DOI: 10.1111/j.1432-1033.2004.04095.x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Plectin, a large and widely expressed cytolinker protein, is composed of several subdomains that harbor binding sites for a variety of different interaction partners. A canonical actin-binding domain (ABD) comprising two calponin homology domains (CH ...

    Plectin, a large and widely expressed cytolinker protein, is composed of several subdomains that harbor binding sites for a variety of different interaction partners. A canonical actin-binding domain (ABD) comprising two calponin homology domains (CH1 and CH2) is located in proximity to its amino terminus. However, the ABD of plectin is unique among actin-binding proteins as it is expressed in the form of distinct, plectin isoform-specific versions. We have determined the three-dimensional structure of two distinct crystalline forms of one of its ABD versions (pleABD/2alpha) from mouse, to a resolution of 1.95 and 2.0 A. Comparison of pleABD/2alpha with the ABDs of fimbrin and utrophin revealed structural similarity between plectin and fimbrin, although the proteins share only low sequence identity. In fact, pleABD/2alpha has been found to have the same compact fold as the human plectin ABD and the fimbrin ABD, differing from the open conformation described for the ABDs of utrophin and dystrophin. Plectin harbors a specific binding site for intermediate filaments of various types within its carboxy-terminal R5 repeat domain. Our experiments revealed an additional vimentin-binding site of plectin, residing within the CH1 subdomain of its ABD. We show that vimentin binds to this site via the amino-terminal part of its rod domain. This additional amino-terminal intermediate filament protein binding site of plectin may have a function in intermediate filament dynamics and assembly, rather than in linking and stabilizing intermediate filament networks.


    Related Citations: 
    • Purification, crystallization and preliminary X-ray analysis of the plectin actin-binding domain
      Urbanikova, L.,Janda, L.,Popov, A.,Wiche, G.,Sevcik, J.
      (2002) Acta Crystallogr.,Sect.D 58: 1368


    Organizational Affiliation

    Institute of Molecular Biology, Slovak Academy of Sciences, Bratislava, Slovak Republic.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Plectin 1
A
245Mus musculusMutation(s): 0 
Gene Names: Plec (Plec1)
Find proteins for Q9QXS1 (Mus musculus)
Go to UniProtKB:  Q9QXS1
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.198 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 32.517α = 90.00
b = 51.226β = 90.00
c = 144.717γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-05-25
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance