1WWN:
reference: NMR solution structure of BmK-betaIT, an excitatory scorpion beta-toxin without a 'hot spot' at the relevant position., Tong X, Yao J, He F, Chen X, Zheng X, Xie C, Wu G, Zhang N, Ding J, Wu H, Biochem Biophys Res Commun. 2006 Oct 27;349(3):890-9. Epub 2006 Aug 30. PMID: 16970911

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).