The phenomenon of hyperpigmentation (melanosis) in shellfish has long been attributed to
phenoloxidase enzymes. Over the last number of years, the oxygen carrier hemocyanin, has …

Prawns are one of the most important fisheries resources all over the world due to their high
market value. They are frozen in many cases in the process of transportation and storage …

Hemocyanin, an oxygen-transport protein, is widely distributed in the hemolymph of marine
arthropods and mollusks, playing an important role in their physiological processes …

Latent phenoloxidase activity of hemocyanin (Hc) in whiteleg shrimp Penaeus vannamei
was assayed to determine its potential involvement in postmortem melanosis. Conversion of …

Polyphenoloxidase and hemocyanin are two proteins which although very similar perform
different physiological functions in crustaceans. This paper reports the presence of …

Hemocyanin and phenoloxidase are both copper-binding proteins involved in the immune
system for a wide range of animal species. In crayfish, these proteins were purified and …

In crustaceans, the circulating hemocytes play the most important role in the protection of the
animal against invading pathogens. Therefore, hematopoiesis is essential to produce new …

The innate immune response is a conserved trait shared by invertebrates and vertebrates. In
crustaceans, circulating hemocytes play significant roles in the immune response, including …

We investigated the enzymatic properties and immunohistochemical localization of cuticular
hemocyanin, a known oxygen transporter in the prawn Penaeus japonicus. The molecular …

In shrimp, the development of postmortem melanosis resulting from phenoloxidase activities
leads to important economic losses. Phenoloxidase enzymes include catechol oxidases …