Ovomucoid

Ovomucoid
The third Kazal domain of the turkey ovomucoid protein (orange) bound to subtilisin Carlsberg, a serine protease.
Identifiers
OrganismMeleagris gallopavo
Symbol?
UniProtP68390
Search for
StructuresSwiss-model
DomainsInterPro
Ovomucoid
Identifiers
OrganismGallus gallus
Symbol?
UniProtP01005
Search for
StructuresSwiss-model
DomainsInterPro

Ovomucoid is a protein found in egg whites. It is a trypsin inhibitor with three protein domains of the Kazal domain family. The homologs from chickens (Gallus gallus) and especially turkeys (Meleagris gallopavo) are best characterized. It is not related to the similarly named ovomucin, another egg white protein.

Chicken ovomucoid, also known as Gal d 1, is a known allergen. It is the protein most often causing egg allergy. At least four IgE epitopes have been identified. Three other egg white proteins are also identified as allergenic: ovalbumin (Gal d 2), ovotransferrin (Gal d 3) and lysozyme (Gal d 4).

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