A blue copper-containing protein found in blood plasma that plays a crucial role in transporting copper throughout the body and preventing iron overload.
From cerulean (blue, referring to the copper content) + plasma + '-in' (protein suffix). Named for its characteristic blue color due to copper atoms bound within the protein structure.
Ceruloplasmin is one of the few blue proteins in human blood—when it's deficient, copper accumulates in the brain causing Wilson's disease, showing how a single misfolded protein can devastate health!
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