1. The amino acid residues mentioned in this paper are L- configuration except for glycine. The abbreviations used to denote amino acid derivatives and peptides are those recommended by the IUPAC-IUB Joint Commission on Biochemical Nomenclature: European J. Biochem., 138: 9 (1984); Int. J. Peptide Protein Res., 24, No. 1 (1984).
2. G. Goldstein, Nature (London), 247: 11 (1974).
3. D. H. Schlesinger and G. Goldstein, Cell, 5: 361 (1975).
4. M. Fujino, S. Shinagawa, T. Fukuda, M. Takaoka, H. Kawaji and Y. Sugino, Chem. Pharm. Bull., 25: 1486 (1977).
5. D. H. Schlesinger, G. Goldstein, M. P. Scheid and E. A. Boyse, Cell, 5: 367 (1975).