1KSR

THE REPEATING SEGMENTS OF THE F-ACTIN CROSS-LINKING GELATION FACTOR (ABP-120) HAVE AN IMMUNOGLOBULIN FOLD, NMR, 20 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 45 
  • Conformers Submitted: 20 
  • Selection Criteria: NUMBER (0) OF RESIDUAL CONSTRAINS VIOLATION (THRESHOLDS: 0.45 A FOR NOES AND 10.0 DEGREE FOR ANGLES) 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The repeating segments of the F-actin cross-linking gelation factor (ABP-120) have an immunoglobulin-like fold.

Fucini, P.Renner, C.Herberhold, C.Noegel, A.A.Holak, T.A.

(1997) Nat.Struct.Mol.Biol. 4: 223-230


  • PubMed Abstract: 
  • The 120,000 M(r) gelation factor and alpha-actinin are among the most abundant F-actin cross-linking proteins in Dictyostelium discoideum. Both molecules are rod-shaped homodimers. Each monomer chain is comprised of an actin-binding domain and a rod ...

    The 120,000 M(r) gelation factor and alpha-actinin are among the most abundant F-actin cross-linking proteins in Dictyostelium discoideum. Both molecules are rod-shaped homodimers. Each monomer chain is comprised of an actin-binding domain and a rod domain. The rod domain of the gelation factor consists of six 100-residue repetitive segments with high internal homology. We have now determined the three-dimensional structure of segment 4 of the rod domain of the gelation factor from D. discoideum using NMR spectroscopy. The segment consists of seven beta-sheets arranged in an immunoglobulin-like (Ig) fold. This is completely different from the alpha-actinin rod domain which consists of four spectrin-like alpha-helical segments. The gelation factor is the first example of an Ig-fold found in an actin-binding protein. Two highly homologous actin-binding proteins from human with similar sequences to the gelation factor, filamin and a 280,000 M(r) actin-binding protein (ABP-280), share conserved residues that form the core of the gelation factor repetitive segment structure. Thus, the segment 4 structure should be common to this subfamily of the spectrin superfamily. The structure of segment 4 together with previously published electron microscopy data, provide an explanation for the dimerization of the whole gelation factor molecule.


    Related Citations: 
    • The Dictyostelium Gelation Factor Shares a Putative Actin Binding Site with Alpha-Actinins and Dystrophin and Also Has a Rod Domain Containing Six 100-Residue Motifs that Appear to Have a Cross-Beta Conformation
      Noegel, A.A.,Rapp, S.,Lottspeich, F.,Schleicher, M.,Stewart, M.
      (1989) J.Cell Biol. 109: 607
    • Properties of the 120,000-and 95,000-Dalton Actin-Binding Proteins from Dictyostelium Discoideum and Their Possible Functions in Assembling the Cytoplasmic Matrix
      Condeelis, J.,Vahey, M.,Carboni, J.M.,Demey, J.,Ogihara, S.
      (1984) J.Cell Biol. 99: 119S
    • Ligand-Induced Changes in the Location of Actin, Myosin, 95K (Alpha-Actinin), and 120K Protein in Amebae of Dictyostelium Discoideum
      Carboni, J.M.,Condeelis, J.S.
      (1985) J.Cell Biol. 100: 1884
    • Human Endothelial Actin-Binding Protein (Abp-280, Nonmuscle Filamin): A Molecular Leaf Spring
      Gorlin, J.B.,Yamin, R.,Egan, S.,Stewart, M.,Stossel, T.P.,Kwiatkowski, D.J.,Hartwig, J.H.
      (1990) J.Cell Biol. 111: 1089


    Organizational Affiliation

    Max Planck Institute for Biochemistry, Martinsried, F.R.G.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GELATION FACTOR
A
100Dictyostelium discoideumGene Names: abpC
Find proteins for P13466 (Dictyostelium discoideum)
Go to UniProtKB:  P13466
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 45 
  • Conformers Submitted: 20 
  • Selection Criteria: NUMBER (0) OF RESIDUAL CONSTRAINS VIOLATION (THRESHOLDS: 0.45 A FOR NOES AND 10.0 DEGREE FOR ANGLES) 
  • Olderado: 1KSR Olderado
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-08-20
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance