| C2 (Complement component 2) | 83.268 | UniProtKB |
| C3 (Complement component 3) | 187.148 | UniProtKB |
| C3 PA (properdin factor B) | 80 | Found via general search |
| C3a (Complement component 3a) | 10 | Found via general search |
| C3c (Complement component 3c) | 137 | Found via general search |
| C3d (Complement component 3d) | 33.8 | Found via general search |
| C4 (Complement component 4) | 230 | 601508 |
| C4b-binding protein | 570 | Found via general search |
| C5 (Complement component 5) | 188.305 | UniProtKB |
| C5a (Complement component 5a) | 10.4 | Found via general search |
