2MW7:
reference: A Disulfide Stabilized beta-Sandwich Defines the Structure of a New Cysteine Framework M-Superfamily Conotoxin., Kancherla AK, Meesala S, Jorwal P, Palanisamy R, Sikdar SK, Sarma SP, ACS Chem Biol. 2015 Aug 21;10(8):1847-60. doi: 10.1021/acschembio.5b00226. Epub, 2015 May 18. PMID: 25961405

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