3L4Q:
reference: Structural insights into phosphoinositide 3-kinase activation by the influenza A virus NS1 protein., Hale BG, Kerry PS, Jackson D, Precious BL, Gray A, Killip MJ, Randall RE, Russell RJ, Proc Natl Acad Sci U S A. 2010 Feb 2;107(5):1954-9. Epub 2010 Jan 19. PMID: 20133840

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