Erythrocruorin (from Greek eruthros "red" + Latin cruor "blood") is a large oxygen-carrying protein complex, which has a molecular mass greater than 3.5 million Daltons.[1] It is related to the similar chlorocruorin, both of which are sometimes dubbed giant hemoglobin and hexagonal bilayer haemoglobin. It is found in many annelids and arthropods (including some insects).[2]
Structure
Two structures of erythrocruorin have been resolved. The protein is a highly symmetric assembly made from heme-binding globins and unique linker proteins.[1][3]
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