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The Evolution of the Immune Response

XIII. The Characterization of Purified Erythrocyte Agglutinins from Two Invertebrate Species¹

From the Pathology Research Laboratories, Variety Club Heart Hospital, and the Department of Pathology, Surgery and Microbiology, University of Minnesota Medical School, Minneapolis, Minnesota 55455

Abstract

Erythrocyte agglutinins were isolated and purified from the horseshoe crab, Limulus polyphemus, and the starfish, Asterias forbesi. The purified agglutinins were studied with respect to primary and secondary molecular structure and the nature of component subunits. When the two agglutinins were compared to one another, to other invertebrate agglutinins and to known vertebrate immunoglobulins, each was found to be unique.

Footnotes

¹ This work was aided by grants from The National Foundation-March of Dimes, American Heart Association, and the United States Public Health Service (AI-00798, AI-08677, AI-00292).