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For Research Use Only. Not For Clinical Use.
Disease related genes, Human disease related genes, Plasma proteins
Intracellular, Secreted (different isoforms)
Cell type enhanced (monocytes, Kupffer cells, Macrophages, Langerhans cells, Hepatic stellate cells)
Group enriched (intermediate monocyte, classical monocyte, myeloid DC, non-classical monocyte, neutrophil)
Cell line enhanced (EFO-21, HEL, HMC-1, NB-4, U-937)
In plasma, properdin exists as dimers, trimers or tetramers in the relative proportions of 26:54:20 (PubMed:20382442, PubMed:15491616, PubMed:28264884, PubMed:31507604). Interacts with the pro-C3-convertase enzyme complex (C3b-Bb) comprised of Complement C3 beta chain (C3b) and the Complement factor B Bb fragment (Bb), where it binds (via its TSP type-1 5 domain) with C3b and Bb (PubMed:28264884, PubMed:31507604). This interaction stabilizes the complex and allows it to become the active C3-convertase enzyme complex (C3b-Bb-FP) (PubMed:28264884, PubMed:31507604). Interacts with C3b (PubMed:28264884, PubMed:31507604). Interacts with CFB (PubMed:31507604).