1RAV

RECOMBINANT AVIDIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Biochemical characterization and crystal structure of a recombinant hen avidin and its acidic mutant expressed in Escherichia coli.

Nardone, E.Rosano, C.Santambrogio, P.Curnis, F.Corti, A.Magni, F.Siccardi, A.G.Paganelli, G.Losso, R.Apreda, B.Bolognesi, M.Sidoli, A.Arosio, P.

(1998) Eur.J.Biochem. 256: 453-460

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The mature hen avidin encoded by a synthetic cDNA was expressed in Escherichia coli in an insoluble form. After resolubilization, renaturation and purification, a recovery of about 20 mg/l cell culture was obtained. ELISA assays indicated no apparent ...

    The mature hen avidin encoded by a synthetic cDNA was expressed in Escherichia coli in an insoluble form. After resolubilization, renaturation and purification, a recovery of about 20 mg/l cell culture was obtained. ELISA assays indicated no apparent differences in biotin binding between the natural and recombinant avidins. In addition, an acidic avidin mutant, bearing the substitutions Lys3-->Glu, Lys9--> Glu, Arg26-->Asp and Arg124-->Leu of four exposed basic residues, was produced. The protein, expressed and renatured as wild-type avidin, showed unaltered biotin-binding activity. The acidic pI (approximately 5.5) and lack of aggregation of the mutant allowed easy electrophoretic analysis under non-denaturing conditions of the protein alone and of its complexes with biotin, biotinylated transferrin or peroxidase. Analysis of the sera from sensitized subjects revealed that the avidin mutant has altered antigenicity. Both recombinant avidins were crystallized and the three-dimensional structures solved by molecular replacement and refined to 0.22 nm resolution. The three-dimensional structures of the two recombinant molecules, in the absence of biotin and of glycosylation, are fully comparable with those of the natural hen avidin previously reported.


    Related Citations: 
    • Crystal Structure of Apo-Avidin from Hen Egg-White
      Pugliese, L.,Malcovati, M.,Coda, A.,Bolognesi, M.
      (1994) J.Mol.Biol. 235: 42
    • Three-Dimensional Structures of Avidin and the Avidin-Biotin Complex
      Livnah, O.,Bayer, E.A.,Wilchek, M.,Sussman, J.L.
      (1993) Proc.Natl.Acad.Sci.USA 90: 5076
    • Three-Dimensional Structure of the Tetragonal Crystal Form of Egg-White Avidin in its Functional Complex with Biotin at 2.7 A Resolution
      Pugliese, L.,Coda, A.,Malcovati, M.,Bolognesi, M.
      (1993) J.Mol.Biol. 231: 698


    Organizational Affiliation

    Dibit, Department of Biological and Technological Research, San Raffaele Scientific Institute, Milano, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AVIDIN
A, B
127Gallus gallusGene Names: AVD
Find proteins for P02701 (Gallus gallus)
Go to UniProtKB:  P02701
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 75.690α = 90.00
b = 80.790β = 90.00
c = 43.630γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
CCP4data reduction
AMoREphasing
MOSFLMdata reduction
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-07-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance