6NUE:
reference: Coupling of ssRNA cleavage with DNase activity in type III-A CRISPR-Csm revealed by cryo-EM and biochemistry., Guo M, Zhang K, Zhu Y, Pintilie GD, Guan X, Li S, Schmid MF, Ma Z, Chiu W, Huang Z, Cell Res. 2019 Feb 27. pii: 10.1038/s41422-019-0151-x. doi:, 10.1038/s41422-019-0151-x. PMID: 30814678

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