RNA topoisomerase is prevalent in all domains of life and associates with polyribosomes in animals.

Ahmad M, Xue Y, Lee SK, Martindale JL, Shen W, Li W, Zou S, Ciaramella M, Debat H, Nadal M, Leng F, Zhang H, Wang Q, Siaw GE, Niu H, Pommier Y, Gorospe M, Hsieh TS, Tse-Dinh YC, Xu D, Wang W
Nucleic Acids Res. 2016 Jun 1. pii: gkw508. PubMed Article

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