1SVY

SEVERIN DOMAIN 2, 1.75 ANGSTROM CRYSTAL STRUCTURE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Mapping the functional surface of domain 2 in the gelsolin superfamily.

Puius, Y.A.Fedorov, E.V.Eichinger, L.Schleicher, M.Almo, S.C.

(2000) Biochemistry 39: 5322-5331

  • DOI: 10.1021/bi992364d
  • Primary Citation of Related Structures:  
    1SVY

  • PubMed Abstract: 
  • The crystal structure of the F-actin binding domain 2 of severin, the gelsolin homologue from Dictyostelium discoideum, has been determined by multiple isomorphous replacement and refined to 1.75 A resolution. The structure reveals an alpha-helix-bet ...

    The crystal structure of the F-actin binding domain 2 of severin, the gelsolin homologue from Dictyostelium discoideum, has been determined by multiple isomorphous replacement and refined to 1.75 A resolution. The structure reveals an alpha-helix-beta-sheet sandwich similar to the domains of gelsolin and villin, and contains two cation-binding sites, as observed in other domain 1 and domain 2 homologues. Comparison of the structures of several gelsolin family domains has identified residues that may mediate F-actin binding in gelsolin domain 2 homologues. To assess the involvement of these residues in F-actin binding, three mutants of human gelsolin domain 2 were assayed for F-actin binding activity and thermodynamic stability. Two of the mutants, RRV168AAA and RLK210AAA, demonstrated a lowered affinity for F-actin, indicating a role for those residues in filament binding. Using both structural and biochemical data, we have constructed a model of the gelsolin domain 1-domain 2-F-actin complex. This model highlights a number of interactions that may serve as positive and negative determinants of filament end- and side-binding.


    Related Citations: 
    • Structure of Severin Domain 2 in Solution
      Schnuchel, A., Wiltscheck, R., Eichinger, L., Schleicher, M., Holak, T.A.
      (1995) J Mol Biol 247: 21
    • Characterization of Actin-and Lipid-Binding Domains in Severin, a Ca(2+)-Dependent F-Actin Fragmenting Protein
      Eichinger, L., Schleicher, M.
      (1992) Biochemistry 31: 4779
    • Severin, Gelsolin, and Villin Share a Homologous Sequence in Regions Presumed to Contain F-Actin Severing Domains
      Andre, E., Lottspeich, F., Schleicher, M., Noegel, A.
      (1988) J Biol Chem 263: 722

    Organizational Affiliation

    Department of Biochemistry, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, New York 10461, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SEVERINA114Dictyostelium discoideumMutation(s): 0 
Gene Names: sevADDB_G0289327
Find proteins for P10733 (Dictyostelium discoideum)
Explore P10733 
Go to UniProtKB:  P10733
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSO
Query on CSO
AL-PEPTIDE LINKINGC3 H7 N O3 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.184 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 33.352α = 90
b = 49.218β = 90
c = 62.79γ = 90
Software Package:
Software NamePurpose
PHASES-95model building
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASESphasing
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-08-10
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance