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  • Title: Tetrapeptides possessing a unique skeleton, JBIR-34 and JBIR-35, isolated from a sponge-derived actinomycete, Streptomyces sp. Sp080513GE-23.
    Author: Motohashi K, Takagi M, Shin-Ya K.
    Journal: J Nat Prod; 2010 Feb 26; 73(2):226-8. PubMed ID: 20146504.
    Abstract:
    Two new modified indole-containing peptides, JBIR-34 (1) and JBIR-35 (2), were isolated from the fermentation broth of a sponge-derived actinomycete identified by phylogenetic methods as a Streptomyces sp. (strain Sp080513GE-23). The planar structures of 1 and 2 were assigned on the basis of 1D and 2D NMR spectroscopy and MS analyses. Further, the absolute configurations of the amino acid residues were determined using Marfey's method.
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