Purified Complement Proteins

Product name

C9 Protein

Purified human complement component C9

Intended use

Complement component C9 is unique to the terminal complement pathway. It is a single chain protein with a molecular weight of 69 kD and is present in plasma at approximately 60 mg/L. Together with the other proteins of the terminal pathway, C9 forms the membrane attack complex or MAC.

Concentration: 1.0 mg/ml
Volume/Vial: 250 µl/vial
Storage: at or below -70°C
Purity: > 95%
Buffer: PBS

Functional Testing:
All Quidel complement components are tested for functional activity in a standard lytic or applicable functional assay and for biochemical purity by SDS- polyacrylamide gel electrophoresis. Please refer to the Certificate of Analysis for lot specific information on functional titer.

Quidel's purified human complement components are useful in a wide variety of immunochemical and research applications.


  • Nicholson-Weller, Butko, P, Wessels, M., Role of Complement Component C1q in IgG independent Opsonophagocytosis of Group B Streptococus, J. Immunol 163:2761-2768, 1999.
  • C. Koski, Dashell, S., Sublytic terminal complement complex decreases Po gene expression in schwan cells, J Neurochem 73(6):2321-2330 (1999).
  • C. Liu, et al., Interaction between the terminal complement pathway complex C5b-7 and anionic phospholipids, Blood 93(7)2291-2301(1999).


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