 Structures of complement component C3 provide insights into the function and evolution of immunity by Bert J. C. Janssen and others

Nature437,505–511(22September2005); DOI10.1038/nature04005. Publisher abstract, Figures1–2 and4: native C3 and processed C3c crystal structures, domain arrangements and protection of reactive thioester. This is not a direct nativeC3/activeC3b structure comparison. Full first-author byline verified.