1AMM

1.2 ANGSTROM STRUCTURE OF GAMMA-B CRYSTALLIN AT 150K


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

An eye lens protein-water structure: 1.2 A resolution structure of gammaB-crystallin at 150 K.

Kumaraswamy, V.S.Lindley, P.F.Slingsby, C.Glover, I.D.

(1996) Acta Crystallogr.,Sect.D 52: 611-622

  • DOI: 10.1107/S0907444995014302

  • PubMed Abstract: 
  • gammabeta-crystallin is a structural protein of the eye lens with a role in the maintenance of an even distribution of protein and water over distances around the wavelength of light, preserving lens transparency. The structure of the 174-residue bov ...

    gammabeta-crystallin is a structural protein of the eye lens with a role in the maintenance of an even distribution of protein and water over distances around the wavelength of light, preserving lens transparency. The structure of the 174-residue bovine protein has already been determined at room temperature to 1.47 A resolution. By flash freezing the protein crystals, data have now been collected to a nominal resolution limit of 1.2 A as radiation damage was essentially eliminated. The protein-water model has been refined against this data using the program RESTRAIN converging to an R factor of 18.5% with all data. Atomic positions are clearly indicated in the electron-density maps. Discrete bimodal disorder has been visualized for a few side chains. Out of a total of 498 water molecules present in the crystal asymmetric unit, 394 have been modelled and refined at unit occupancy. The solvent structure is extremely well ordered with an average B value of 23.4 A(2). Partially occupied sites have been identified where disorder in the protein induces concomitant disorder in the local solvent structure. The solvent structure covers 97% of the solvent-exposed surface of the protein in the crystal. 126 water molecules are distributed in second and higher hydration shells. There are networks of hydrogen-bonded solvent extending up to 64 molecules in a network, comprising trimers and tetramers as well as five- and six-membered water-ring structures. The hydration of the protein surface is dominated by arginine and aspartate side chains. Extensive cages of highly ordered solvent molecules are also observed around exposed non-polar groups.


    Related Citations: 
    • Structure of Gammab-Crystallin at 150K
      Lindley, P.F.,Najmudin, S.,Bateman, O.,Slingsby, C.,Myles, D.D.,Kumaraswamy, S.,Glover, I.
      (1993) J.Chem.Soc.,Faraday Trans. 89: 2677
    • Structure of the Bovine Eye Lens Protein Gamma B (Gamma II) Crystallin at 1.47 Angstroms
      Najmudin, S.,Nalini, V.,Driessen, H.P.C.,Slingsby, C.,Blundell, T.L.,Moss, D.S.,Lindley, P.F.
      (1993) Acta Crystallogr.,Sect.D 49: 223


    Organizational Affiliation

    Physics Department, Keele University, Staffordshire, England.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GAMMA B-CRYSTALLIN
A
174Bos taurusMutation(s): 0 
Gene Names: CRYGB
Find proteins for P02526 (Bos taurus)
Go to Gene View: CRYGB
Go to UniProtKB:  P02526
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 56.430α = 90.00
b = 56.430β = 90.00
c = 97.120γ = 90.00
Software Package:
Software NamePurpose
RESTRAINrefinement
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-11-08
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-11-16
    Type: Atomic model