4RWN:
reference: The Activation Mechanism of 2'-5'-Oligoadenylate Synthetase Gives New Insights Into OAS/cGAS Triggers of Innate Immunity., Lohofener J, Steinke N, Kay-Fedorov P, Baruch P, Nikulin A, Tishchenko S, Manstein DJ, Fedorov R, Structure. 2015 May 5;23(5):851-62. doi: 10.1016/j.str.2015.03.012. Epub 2015 Apr, 16. PMID: 25892109

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