Complement Proteins

C1 Inhibitor is a multi-specific protease inhibitor present in human plasma and serum. Among the proteins it regulates are C1s and C1r of the C1 complement...

Purified human complement component C1q. Circulating C1q protein is a hexamer of three unique protein subunits (A,B, and C) with molecular weights of 29, 26...

Complement protein C1r is a serine protease that combines with C1q and C1s to form C1, the first component of the classical pathway of the complement system...

Complement protein C1s is a serine protease that combines with C1q and C1r to form C1, the first component of the classical pathway of the complement system...

Complement protein C2, which is part of the classical pathway of the complement system, is cleaved by activated factor C1 into two fragments: C2b and C2a....

Purified human complement component C3. The third component of complement is a centrally important constituent of both the alternative and classical...

The complement pathway generates a C3 convertase, a serine protease that cleaves the central complement protein C3, and generates the major cleavage...

The complement pathway generates a C3 convertase, a serine protease that cleaves the central complement protein C3, and generates the major cleavage...

Purified human complement component C4. C4 is one of the proteins unique to the Classical Complement Pathway.

Derived from proteolytic degradation of complement C4, C4a anaphylatoxin is a mediator of local inflammatory process.

C4b is a cleavage product of complement protein C4, along with C4a. C4b is a non-enzymatic component of the C3 and C5 convertases and thus essential for the...

Purified human complement component C5. Complement component C5 is unique to the terminal complement pathway.

C5a, or C5 anaphylatoxin, is a mediator of local inflammatory process. It induces a variety of responses including intracellular calcium release,...

Purified human complement component C6.

Purified human complement component C7. Complement component C7 is unique to the terminal complement pathway.

Purified human complement component C8. Complement component C8 is unique to the terminal complement pathway.

Purified human complement component C9. Complement component C9 is unique to the terminal complement pathway.

Purified human complement Factor B. Factor B is one of the proteins unique to the Alternative Complement Pathway.

A centrally important reaction that occurs during alternative pathway activation is the conversion of the Factor B zymogen to an active proteolytic enzyme...

Purified human complement Factor D. Factor D is unique to the Alternative Complement Pathway.

Human serum immunochemically depleted of Factor D protein. Quidel's depleted sera are specifically depleted of a single complement protein. With the...

Purified human complement Factor H. Factor H is a fluid phase complement regulatory protein.

Purified human complement component Factor I. Factor I is a fluid phase complement regulatory enzyme.

Purified human complement Factor P. Factor P is a tetrameric protein consisting of identical 56 kD subunits.

iC3b is generated during the activation of the complement system via the classical or alternative pathway. When a convertase enzyme cleaves C3, C3a and C3b...

A rabbit antiserum raised against human complement C3a protein. C3a, along with C3b, is a cleavage product of complement protein C3. C3a is a anaphylatoxin...

A rabbit antiserum raised against human complement C4a protein. C4a is a protein fragment from the cleavage of complement protein C4, along with C4b.

A goat antiserum raised against human Factor D protein. Factor D is unique to the Alternative Complement Pathway. It consists of a single peptide chain with...

A goat antiserum raised against human complement Factor P protein.

A rabbit antiserum raised against human complement SC5b-9 protein. SC5b-9 is the soluble version of the terminal complement complex (TCC). The TCC is a...

A rabbit antiserum raised against human complement Vitronectin protein.