Differences in the carapace astaxanthin proteins, crustacyanins, of the lobsters, Homarus americanus and Homarus gammarus (L.)

Abstract 1. 1. The crustacyanins of Homarus gammarus (L.) and Homarus americanus, identical in absorption spectrum, behave differently in ion-exchange chromatography and polyacrylamide gel electrophoresis. 2. 2. The carapace astaxanthin-proteins of the separate species also have distinct subunit structures.