5YSM:
reference: Deciphering the late steps of rifamycin biosynthesis., Qi F, Lei C, Li F, Zhang X, Wang J, Zhang W, Fan Z, Li W, Tang GL, Xiao Y, Zhao G, Li S, Nat Commun. 2018 Jun 14;9(1):2342. doi: 10.1038/s41467-018-04772-x. PMID: 29904078

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