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Complement C3, C3c (FITC)

Complement C3, C3c (FITC)

Cat no: C7850-14S7

Supplier: United States Biological
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C3 is the most abundant complement protein in guinea pig serum. Its biological function strongly resembles that of C3 in man and other laboratory animal species. It has a central role in the activation system being common to both pathways. Activation of C3 is achieved by very specific limited proteolysis resulting in the release of a number of degradation fragments. The anaphylotoxin C3a promotes smooth muscle contraction and increases vascular permeability: the large C3b fragment is involved in binding to the complement activator and can be interact with specific receptors to allow efficient clearance of the activating cell or particle; degradation fragments of C3b (C3bi, C3c, C3dg C3d) are important in receptor binding and clearance mechanisms, in virus neutralization and possibly in the immune response. C3c is the major fragment resulting from C3 cleavage by C3 convertase and factor I. It is composed of an intact beta chain bound to two fragments of the alpha chain. Applications: Suitable for use in Immunoelectrophoresis, Double Radial Immunodiffusino and ELISA. Other applications not tested. Recommended Dilution: Optimal dilutions to be determined by the researcher. Excitation: 492nm Emission: 515nm Fluorescein/IgG protein molar ratio (F/P): ~1.6 Storage and Stability: Lyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile ddH2O or PBS. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Reconstituted product is stable for 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Catalogue number: C7850-14S7
Reactivities: Guinea Pig
Hosts: Goat
Applications: ELISA
Size: 1ml
Form: Supplied as a lyophilized powder frpm PBS, pH 7.2. Preservative free. Labeled with fluorescein isothiocyanate (FITC). Reconstitute with 1ml sterile ddH2O. Dilute further with PBS, pH 7.2.
P type: Pab
Isotype: IgG
Purity: Purified
Additional info: Recognizes guinea pig serum Complement C3, C3c. Reacts with both native and activated C3. May also react with the fragments C3b, C3bi and C3dg, since they all carry antigenic epitopes of the C3c domain. In immunoelectrophoresis against fresh guinea pig serum, a single precipitin line is obtained in the beta-1 region representing native C3. Against serum containing partly activated C3, a precipitin line is obtained which extends from the beta-1 into the alpha-2 region, demonstrating a gradient. In old serum containing totally activated C3 a single precipitin line in the alpha-2 region is obtained. Also reacts with the fragments C3b, C3bi and smaller fragments, since they all carry antigenic determinants of the C3c domain. Does not react with any other proteins component of guinea pig serum or plasma.

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