2IAK

Crystal Structure of a protease resistant fragment of the plakin domain of Bullous Pemphigoid Antigen1 (BPAG1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 

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This is version 1.3 of the entry. See complete history


Literature

Structural analysis of the plakin domain of bullous pemphigoid antigen1 (BPAG1) suggests that plakins are members of the spectrin superfamily.

Jefferson, J.J.Ciatto, C.Shapiro, L.Liem, R.K.

(2007) J Mol Biol 366: 244-257

  • DOI: 10.1016/j.jmb.2006.11.036
  • Primary Citation of Related Structures:  
    2IAK

  • PubMed Abstract: 
  • Bullous pemphigoid antigen 1 (BPAG1) is a member of the plakin family of proteins. The plakins are multi-domain proteins that have been shown to interact with microtubules, actin filaments and intermediate filaments, as well as proteins found in cellular junctions ...

    Bullous pemphigoid antigen 1 (BPAG1) is a member of the plakin family of proteins. The plakins are multi-domain proteins that have been shown to interact with microtubules, actin filaments and intermediate filaments, as well as proteins found in cellular junctions. These interactions are mediated through different domains on the plakins. The interactions between plakins and components of specialized cell junctions such as desmosomes and hemidesmosomes are mediated through the so-called plakin domain, which is a common feature of the plakins. We report the crystal structure of a stable fragment from BPAG1, residues 226-448, defined by limited proteolysis of the whole plakin domain. The structure, determined by single-wavelength anomalous diffraction phasing from a selenomethionine-substituted crystal at 3.0 A resolution, reveals a tandem pair of triple helical bundles closely related to spectrin repeats. Based on this structure and analysis of sequence conservation, we propose that the architecture of plakin domains is defined by two pairs of spectrin repeats interrupted by a putative Src-Homology 3 (SH3) domain.


    Organizational Affiliation

    Department of Pathology and Cell Biology, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bullous pemphigoid antigen 1, isoform 5A224Mus musculusMutation(s): 1 
Gene Names: DstBpag1Macf2
UniProt & NIH Common Fund Data Resources
Find proteins for Q91ZU6 (Mus musculus)
Explore Q91ZU6 
Go to UniProtKB:  Q91ZU6
IMPC:  MGI:104627
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ91ZU6
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 
  • Space Group: I 41 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 195.8α = 90
b = 195.8β = 90
c = 195.8γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
CBASSdata collection
XDSdata reduction
XDSdata scaling
SHELXSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-11-28
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Derived calculations, Refinement description, Version format compliance
  • Version 1.3: 2021-10-20
    Changes: Database references, Derived calculations