Summary
The subunit structure, association equilibria, and oxygen binding of the hemocyanins of three thalassinid shrimp have been investigated. The organismsCallianassa californiensis, Callianassa gigas andUpogebia pugettensis are found in similar but distinct habitats in a limited region. All of the hemocyanins exhibit a common pattern of subunit structure, but differ in details of the response of that structure to variations in ionic environment. All three are heterogeneous in polypeptide chain composition, but have quite different distributions of components. The oxygen binding of the twoCallianassa hemocyanins is virtually identical under conditions approximating physiological; that ofUpogebia, which shows lower tolerance to anoxia, is significantly different. These similarities and differences are discussed in terms of the physiological requirements of the species.
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Miller, K.I., Eldred, N.W., Arisaka, F. et al. Structure and function of hemocyanin from thalassinid shrimp. J Comp Physiol B 115, 171–184 (1977). https://doi.org/10.1007/BF00692528
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DOI: https://doi.org/10.1007/BF00692528