5O32:
reference: Regulator-dependent mechanisms of C3b processing by factor I allow differentiation of immune responses., Xue X, Wu J, Ricklin D, Forneris F, Di Crescenzio P, Schmidt CQ, Granneman J, Sharp TH, Lambris JD, Gros P, Nat Struct Mol Biol. 2017 Aug;24(8):643-651. doi: 10.1038/nsmb.3427. Epub 2017, Jul 3. PMID: 28671664

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