Isolation and complete amino acid sequences of eclosion hormones of the silkworm, Bombyx mori
1991
Kono, T. | Nagasawa, H. | Isogai, A. | Fugo, H. | Suzuki, A.
Four closely related eclosion hormones (EHs), EH-I, -II, -Ill and -IV, were purified from 770,000 pharate adult heads of the silkworm, Bombyx mori. The complete amino acid sequence was determined by Edman degradation of peptide fragments generated by enzymatic digestion. Preliminary results have been reported (Kono et al., Agric. biol. Chem. 51, 2307-2308, 1987). Accumulated data suggested that EH-IV has the longest sequence consisting of 62 residues. EH-I and -III have N-termini truncated by two residues. EH-I and -II terminate at position 61. The removal of the C-terminal leucine in EH-I and -II might have occurred artificially during extraction.
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