4FVU:
reference: Structural Basis for the dsRNA Specificity of the Lassa Virus NP Exonuclease., Hastie KM, King LB, Zandonatti MA, Saphire EO, PLoS One. 2012;7(8):e44211. Epub 2012 Aug 28. PMID: 22937163

This OCA Structure page
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