1TJF

The crystal structure of the N-terminal domain of CAP indicates variable oligomerisation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.197 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Structural evidence for variable oligomerization of the N-terminal domain of cyclase-associated protein (CAP).

Mohd Yusof, A.Hu, N.J.Wlodawer, A.Hofmann, A.

(2005) Proteins 58: 255-262

  • DOI: https://doi.org/10.1002/prot.20314
  • Primary Citation of Related Structures:  
    1TJF

  • PubMed Abstract: 

    Cyclase-associated protein (CAP) is a highly conserved and widely distributed protein that links the nutritional response signaling to cytoskeleton remodeling. In yeast, CAP is a component of the adenylyl cyclase complex and helps to activate the Ras-mediated catalytic cycle of the cyclase. While the N-terminal domain of CAP (N-CAP) provides a binding site for adenylyl cyclase, the C-terminal domain (C-CAP) possesses actin binding activity. Our attempts to crystallize full-length recombinant CAP from Dictyostelium discoideum resulted in growth of orthorhombic crystals containing only the N-terminal domain (residues 42-227) due to auto-proteolytic cleavage. The structure was solved by molecular replacement with data at 2.2 A resolution. The present crystal structure allows the characterization of a head-to-tail N-CAP dimer in the asymmetric unit and a crystallographic side-to-side dimer. Comparison with previously published structures of N-CAP reveals variable modes of dimerization of this domain, but the presence of a common interface for the side-to-side dimer.


  • Organizational Affiliation

    Institute of Structural & Molecular Biology, School of Biological Sciences, The University of Edinburgh, Scotland, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Adenylyl cyclase-associated protein
A, B
186Dictyostelium discoideumMutation(s): 0 
Gene Names: CAP
UniProt
Find proteins for P54654 (Dictyostelium discoideum)
Explore P54654 
Go to UniProtKB:  P54654
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP54654
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.197 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.24α = 90
b = 75.06β = 90
c = 162.874γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-02-01
    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: 2023-08-23
    Changes: Data collection, Database references, Derived calculations, Refinement description