| Effectors: C3a | Anaphylatoxin |
| *C3b/iC3b/C3dg/C3d | Ligand for receptors |
| C5a | Anaphylatoxin |
| C5b-C9 | Membrane perturbation/Cell Lysis |
| * These C3 fragments would all be covalently bound to the target via an ester linkage at the site of the thioester bond in the C3d portion of the α-chain. | |
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