2JDG

Affilin based on HUMAN GAMMA-B CRYSTALLIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Affilin-Novel Binding Molecules Based on Human Gamma-B-Crystallin, an All Beta-Sheet Protein.

Ebersbach, H.Fiedler, E.Scheuermann, T.Fiedler, M.Stubbs, M.T.Reimann, C.Proetzel, G.Rudolph, R.Fiedler, U.

(2007) J.Mol.Biol. 372: 172

  • DOI: 10.1016/j.jmb.2007.06.045
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The concept of novel binding proteins as an alternative to antibodies has undergone rapid development and is now ready for practical use in a wide range of applications. Alternative binding proteins, based on suitable scaffolds with desirable propert ...

    The concept of novel binding proteins as an alternative to antibodies has undergone rapid development and is now ready for practical use in a wide range of applications. Alternative binding proteins, based on suitable scaffolds with desirable properties, are selected from combinatorial libraries in vitro. Here, we describe an approach using a beta-sheet of human gamma-B-crystallin to generate a universal binding site through randomization of eight solvent-exposed amino acid residues selected according to structural and sequence analyses. Specific variants, so-called Affilin, have been isolated from a phage display library against a variety of targets that differ considerably in size and structure. The isolated Affilin variants can be produced in Escherichia coli as soluble proteins and have a high level of thermodynamic stability. The crystal structures of the human wild-type gamma-B-crystallin and a selected Affilin variant have been determined to 1.7 A and 2.0 A resolution, respectively. Comparison of the two molecules indicates that the human gamma-B-crystallin tolerates amino acid exchanges with no major structural change. We conclude that the intrinsically stable and easily expressed gamma-B-crystallin provides a suitable framework for the generation of novel binding molecules.


    Organizational Affiliation

    Scil Proteins GmbH, Heinrich Damerow Str. 1, 06120 Halle (Saale), Germany. hebersbach@bioc.unizh.ch




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GAMMA CRYSTALLIN B
A
183Homo sapiensMutation(s): 7 
Gene Names: CRYGB (CRYG2)
Find proteins for P07316 (Homo sapiens)
Go to Gene View: CRYGB
Go to UniProtKB:  P07316
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.214 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 47.720α = 90.00
b = 53.950β = 90.00
c = 62.170γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-07-24
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance