Also found in: Dictionary, Encyclopedia, Wikipedia.


Any of several iron-containing, oxygen-binding circulatory proteins in certain invertebrates, with molecular weights similar to that of hemoglobin but lacking porphyrin groups.
Synonym(s): haemerythrin.
[hem- + G. erythros, red, + in]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Cloning and characterization of hemerythrin gene from Sipuncula Phascolosoma esculenta.
Four families of oxygen-binding and/or transporting proteins have been characterized into two major groups: iron based, including hemoglobins (Hbs) and hemerythrins (Hrs), and copper based, including two non-homologous families of hemocyanins (Hcs) (Terwilliger et al., 1976; Burmester, 2002; Coates and Decker, 2017).
A phylogenomic profile of hemerythrins, the nonheme diiron binding respiratory proteins.
They are 10-20 [micro]m diameter, bear the respiratory pigment hemerythrin, are more or less biconvex in shape, and have large lysosomic vacuoles that are variable in number depending on the species (Ochi, 1975).