| Abstract: | By means of alkaline extraction, gel filtration and two kinds of high-performance liquid chromatography, a growth hormone from pike eel pituitary was purified and its primary structure determined. There are two forms of growth hormone, one of which has three more amino acids at the N-terminal. The same situation arises in the Japanese eel. With invariant four half-cystines, it is composed of 190 amino acids; similar to the growth hormone of the Japanese eel, it differs only in six amino-acid residues. |
