2ZTB:
reference: Crystal Structure of the Parasporin-2 Bacillus thuringiensis Toxin That Recognizes Cancer Cells., Akiba T, Abe Y, Kitada S, Kusaka Y, Ito A, Ichimatsu T, Katayama H, Akao T, Higuchi K, Mizuki E, Ohba M, Kanai R, Harata K, J Mol Biol. 2008 Dec 9. PMID: 19094993

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