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Science 14 July 1972:
Vol. 177. no. 4044, pp. 173 - 175
DOI: 10.1126/science.177.4044.173
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Articles

Crustacean Color-Change Hormone: Amino Acid Sequence and Chemical Synthesis

Per Fernlund 1 and Lars Josefsson 2

1 Division of Physiological Chemistry, Chemical Center, University of Lund, S-220 07 Lund 7, Sweden
2 Department of Biochemistry C, University of Copenhagen, D-2200 Copenhagen N, Denmark

The blanching hormone of the prawn, Pandalus borealis, is pGlu-Leu-Asn-Phe-Ser-Pro-Gly-Trp-NH2. Its structure was settled by a combination of mass spectrometry and Edman-dansyl analysis of a thermolysin fragment. Confirmation of the structure was obtained by chemical synthesis from amino acids. This neurosecreted hormone is active in picogram amounts when tested in shrimps.


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