4YE2:
reference: Structural basis for 2' -5' -oligoadenylate binding and enzyme activity of a viral RNase L antagonist., Ogden KM, Hu L, Jha BK, Sankaran B, Weiss SR, Silverman RH, Patton JT, Prasad BV, J Virol. 2015 Apr 15. pii: JVI.00701-15. PMID: 25878106

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