1XWO

crystal structrue of goose delta crystallin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The effect of N-terminal truncation on double-dimer assembly of goose delta-crystallin

Lee, H.J.Lai, Y.H.Wu, S.Y.Chen, Y.H.

(2005) Biochem.J. 392: 545-554

  • DOI: 10.1042/BJ20050860

  • PubMed Abstract: 
  • Delta-crystallin is a soluble structural protein in avian eye lenses that confers special refractive properties. In the presence of GdmCl (guanidinium chloride), tetrameric delta-crystallin undergoes dissociation via a dimeric state to a monomeric mo ...

    Delta-crystallin is a soluble structural protein in avian eye lenses that confers special refractive properties. In the presence of GdmCl (guanidinium chloride), tetrameric delta-crystallin undergoes dissociation via a dimeric state to a monomeric molten globule intermediate state. The latter are denatured at higher GdmCl concentrations in a multi-state manner. In the present study, the X-ray structure of goose delta-crystallin was determined to 2.8 A (1 A=0.1 nm). In this structure the first 25 N-terminal residues interact with a hydrophobic cavity in a neighbouring molecule, stabilizing the quaternary structure of this protein. When these 25 residues were deleted this did not produce any gross structural changes, as judged by CD analysis, but slightly altered tryptophan fluorescence and ANS (8-anilino-1-naphthalenesulphonic acid) spectra. The dimeric form was significantly identified as judged by sedimentation velocity and nondenaturing gradient gel electrophoresis. This mutant had increased sensitivity to temperature denaturation and GdmCl concentrations of 0.3-1.0 M. This protein was destabilized about 3.3 kcal/mol (1 kcal=4.184 kJ) due to N-terminal truncation. After incubation at 37 degrees C N-terminal truncated proteins were prone to aggregation, suggesting the presence of the unstable dimeric conformation. An important role for the N-terminus in dimer assembly of goose delta-crystallin is proposed.


    Organizational Affiliation

    Department of Biochemistry, National Defense Medical Center, Taipei 114, Taiwan. hjlee@mail.ndmctsgh.edu.tw




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Delta crystallin
A, B, C, D
465Anser anser anserMutation(s): 0 
Gene Names: ASL
EC: 4.3.2.1
Find proteins for P33110 (Anser anser anser)
Go to Gene View: ASL
Go to UniProtKB:  P33110
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.210 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 93.700α = 90.00
b = 99.000β = 101.40
c = 106.500γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
MOLREPphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-10-18
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance