4LZC:
reference: Reprogramming the Chemodiversity of Terpenoid Cyclization by Remolding the Active Site Contour of epi-Isozizaene Synthase., Li R, Chou WK, Himmelberger JA, Litwin KM, Harris GG, Cane DE, Christianson DW, Biochemistry. 2014 Feb 25;53(7):1155-68. doi: 10.1021/bi401643u. Epub 2014 Feb, 11. PMID: 24517311

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