Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to hemocyanin: Hemerythrin
An oxygen-carrying pigment (molecular weights between 0.45 and 13 × 106) of lower sea animals (including molluscs and crustacea) and arthropods; copper is an essential component, but it contains no heme; used as an experimental antigen.
hemocyanin/he·mo·cy·a·nin/ (-si´ah-nin) a blue copper-containing respiratory pigment occurring in the blood of mollusks and arthropods.
A bluish, copper-containing protein with an oxygen-carrying function similar to that of hemoglobin, present in the circulatory system of certain mollusks and arthropods.
an oxygen-carrying protein molecule present in certain lower animals, particularly arthropods and mollusks. The molecule is similar to the hemoglobin molecule of human blood but uses copper atoms, rather than iron, and is less efficient than hemoglobin in requiring many more atoms to bind a single molecule of oxygen.
An oxygen-carrying pigment in some mollusks, crustacea, and arthropods; contains copper rather than heme; used as an experimental antigen.
[hemo- + G. kyanos, blue material, + -in]