1PT4:
reference: Isolation, Solution Structure, and Insecticidal Activity of Kalata B2, a Circular Protein with a Twist: Do Mobius Strips Exist in Nature?(,)., Jennings CV, Rosengren KJ, Daly NL, Plan M, Stevens J, Scanlon MJ, Waine C, Norman DG, Anderson MA, Craik DJ, Biochemistry 2005 Jan 25;44(3):851-860. PMID: 15654741

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