Isolation of L-3-phenyllactyl-Leu-Arg-Asn-NH sub 2 (Antho-RNamide), a sea anemone neuropeptide containing an unusual amino-terminal blocking group

Using a radioimmunoassay for the carboxyl-terminal sequence Arg-Asn-NH{sub 2}, the authors have purified a peptide from acetic acid extracts of the sea anemone Anthopleura elegantissima. By classical amino acid analyses, mass spectrometry, and {sup 1}H NMR spectroscopy, the structure of this peptide...

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