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  • Title: Role of guanidine group at the N-terminal proctolin chain in cardioexcitatory effects in insects.
    Author: Konopińska D, Rosiński G, Bartosz-Bechowski H, Lesicki A, Sujak P, Sobótka W.
    Journal: Int J Pept Protein Res; 1990 Jan; 35(1):12-6. PubMed ID: 1969851.
    Abstract:
    Six proctolin analogues (I-VI) modified in position 1 of the peptide chain by the following amino acids: homo-Arg, Gac, Gav, Gap, Phe (p-guanidino) and Orn, were synthesized by conventional liquid phase method. The myotropic activity of the obtained peptides was investigated in cardioexcitatory test on two insect species, cockroach, Periplaneta americana L., and yellow mealworm, Tenebrio molitor.
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