Dominin and Segon Form Multiprotein Particles in the Plasma of Eastern Oysters () and Are Likely Involved in Shell Formation.

Dominin and segon are two proteins purified and characterized from the plasma of eastern oysters , making up about 70% of the total plasma proteins. Their proposed functions are in host defense based on their pathogen binding properties and in metal metabolism based on their metal binding abilities. In the present study, the two proteins were further studied for their native states in circulation and extrapallial fluid and their possible involvement in shell formation.