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 ...

    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
Find proteins for P01012 (Gallus gallus)
Explore P01012 
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
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
OVALBUMINCD386Gallus gallusMutation(s): 0 
Gene Names: SERPINB14
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
Query on NAG

Download Ideal Coordinates CCD File 
A, B, C, 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 
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 

  • 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