5JCB:
reference: Structural Insights into the Inhibition of Tubulin by the Antitumor Agent 4beta-(1,2,4-triazol-3-ylthio)-4-deoxypodophyllotoxin., Zhao W, Zhou C, Guan ZY, Yin P, Chen F, Tang YJ, ACS Chem Biol. 2017 Mar 17;12(3):746-752. doi: 10.1021/acschembio.6b00842. Epub, 2017 Jan 25. PMID: 28035796

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