Chicken Ovalbumin is the major protein in the "white" of the egg (and a favorite antigen in immunological research). Egg white contains a variety of proteins including ovalbumin, conalbumin, ovomucoid and lysozyme. It belongs to the serpin family and the Ov serpin subfamily. Ovalbumin can cause an allergic reaction in humans.
Ovalbumin has been implicated in the development of the egg shell. Immunohistochemistry revealed that ovalbumin is found only in the mammillary bodies of decalcified shell, and is not distributed throughout the shell matrix. These results indicate that ovalbumin is present during the initial phase of shell formation and becomes incorporated into the protein matrix of the mammillary bodies. However, it is not yet clear whether ovalbumin at this site plays a specific role in shell mineralisation.
Function:
Storage protein of egg white. Lack protease inhibitory activity.
Subcellular Location:
Secreted.
Tissue Specificity:
Major protein of egg white.
Post-translational modifications:
The signal sequence is not cleaved. The functional signal for membrane translocation of ovalbumin becomes accessible when the nascent chain is 50 to 60 residues long. The hydrophobic sequence which lies between residues 27 and 43 folds back on the preceding residues to form an amphipathic hairpin structure which is the signal element recognized by the membrane.
Similarity:
Belongs to the serpin family. Ov-serpin subfamily.
SWISS:
P02769
Gene ID:
280717
Database links:
Entrez Gene: 396058 Chicken
SwissProt: P01012 Chicken
Unigene: 117109 Chicken
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Sample:
Ovalbumin protein at 5 ng
Ovalbumin protein at 5 ng
Primary: Anti- Ovalbumin (SL0283R) at 1/500 dilution
Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/20000 dilution
Predicted band size: 43 kD
Observed band size: 50 kD
Sample:
Lane 1: Chicken OVA
Primary: Anti-Ovalbumin (SL0283R) at 1/1000 dilution
Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/20000 dilution
Predicted band size: 45 kDa
Observed band size: 45 kDa
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