| GO | Name |
| GO:0005576 | extracellular region |
| GO:0006957 | complement activation, alternative pathway |
| GO:0030449 | regulation of complement activation |
| GO:0032091 | negative regulation of protein binding |
| GO:0032991 | protein-containing complex |
| GO:0042802 | identical protein binding |
| GO:0046982 | protein heterodimerization activity |
| GO:0051838 | cytolysis by host of symbiont cells |