1OVA

CRYSTAL STRUCTURE OF UNCLEAVED OVALBUMIN AT 1.95 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Observed: 0.169 

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This is version 1.3 of the entry. See complete history


Literature

Crystal structure of uncleaved ovalbumin at 1.95 A resolution.

Stein, P.E.Leslie, A.G.Finch, J.T.Carrell, R.W.

(1991) J Mol Biol 221: 941-959

  • DOI: 10.1016/0022-2836(91)80185-w
  • Primary Citation of Related Structures:  
    1OVA

  • PubMed Abstract: 
  • Ovalbumin, the major protein in avian egg-white, is a non-inhibitory member of the serine protease inhibitor (serpin) superfamily. The crystal structure of uncleaved, hen ovalbumin was solved by the molecular replacement method using the structure of plakalbumin, a proteolytically cleaved form of ovalbumin, as a starting model ...

    Ovalbumin, the major protein in avian egg-white, is a non-inhibitory member of the serine protease inhibitor (serpin) superfamily. The crystal structure of uncleaved, hen ovalbumin was solved by the molecular replacement method using the structure of plakalbumin, a proteolytically cleaved form of ovalbumin, as a starting model. The final refined model, including four ovalbumin molecules, 678 water molecules and a single metal ion, has a crystallographic R-factor of 17.4% for all reflections between 6.0 and 1.95 A resolution. The root-mean-square deviation from ideal values in bond lengths is 0.02 A and in bond angles is 2.9 degrees. This is the first crystal structure of a member of the serpin family in an uncleaved form. Surprisingly, the peptide that is homologous to the reactive centre of inhibitory serpins adopts an alpha-helical conformation. The implications for the mechanism of inhibition of the inhibitory members of the family is discussed.


    Related Citations: 
    • Crystal Structure of Ovalbumin as a Model for the Reactive Centre of Serpins
      Stein, P.E., Leslie, A.G.W., Finch, J.T., Turnell, W.G., Mclaughlin, P.J., Carrell, R.W.
      (1990) Nature 347: 99

    Organizational Affiliation

    Department of Haematology, University of Cambridge, U.K.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
OVALBUMINA386Gallus gallusMutation(s): 0 
Gene Names: SERPINB14
UniProt
Find proteins for P01012 (Gallus gallus)
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Go to UniProtKB:  P01012
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
OVALBUMINB386Gallus gallusMutation(s): 0 
Gene Names: SERPINB14
UniProt
Find proteins for P01012 (Gallus gallus)
Explore P01012 
Go to UniProtKB:  P01012
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
OVALBUMINC, D386Gallus gallusMutation(s): 0 
Gene Names: SERPINB14
UniProt
Find proteins for P01012 (Gallus gallus)
Explore P01012 
Go to UniProtKB:  P01012
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG (Subject of Investigation/LOI)
Query on NAG

Download Ideal Coordinates CCD File 
E [auth A], G [auth B], H [auth C], I [auth D]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
F [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
AL-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Observed: 0.169 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.9α = 87.5
b = 84.7β = 104
c = 71.5γ = 108.5
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1992-04-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Other, Structure summary