2JQC:
reference: Purification and structural characterization of a d-amino acid-containing conopeptide, conomarphin, from Conus marmoreus., Han Y, Huang F, Jiang H, Liu L, Wang Q, Wang Y, Shao X, Chi C, Du W, Wang C, FEBS J. 2008 Mar 18;. PMID: 18355315

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