Hemoglobin from the Antarctic fish Notothenia coriiceps neglecta. Amino acid sequence of the beta chain

1. 1. Notothenia coriiceps neglecta is a cold-adapted notothenioid teleost, widely distributed in the Antarctic waters. 2. 2. In comparison with fishes from temperate waters, the blood of this teleost contains a redced number of erythrocytes and concentration of hemoglobin; the erythrocytes contain two hemoglobins, HB 1 and Hb 2, respectively accounting for approximately 90, and 5% of the total. 3. 3. The two components differ by the ? chain; the amino acid sequence of the ? chain in common to the two hemoglobins has been established, thus completing the elucidation of the primary structure of the major component Hb 1. © 1990.