The antiserum does not cross-react with any other human plasma proteins as tested in gel-diffusion techniques. Inter-species cross-reactivity is a normal feature of antibodies to plasma proteins, since homologous proteins of different species frequently share antigenic determinants. of this antiserum has not been tested in detail.
Produktmerkmale
Precipitating polyclonal rabbit antiserum to human C2 component of complement
Aufreinigung
Adsorption: Immunoaffinity adsorbed using insolubilized antigens as required, to eliminate antibodies reacting with other human serum proteins. The use of insolubilized adsorption antigens prevents the presence of excess adsorbent protein or immune complexes in the antiserum.
Immunogen
The C2 component of human complement is a single-chain polypeptide with a molecular weight of 110,000. It is present in plasma in an average concentration of 25 µ g/ml. The activated form of C2 combines with the activated C4 to form a complex with C3-convertase activity in the classical pathway of complement activation. C2 is isolated as a homogenous protein for use in the antiserum production. Freund’s complete adjuvant is used in the first step of the immunization procedure.
In precipitating techniques as immunoelectrophoresis and single and double radial immuno-diffusion (Mancini, Ouchterlony) to identify the presence of C2 or to determine its concentration. The presence of non-precipitating antibodies has not been assayed. This does not exclude the use of the antiserum in non-precipitating antibody-binding techniques if proper controls are included.
Beschränkungen
Nur für Forschungszwecke einsetzbar
Format
Lyophilized
Konzentration
The IgG concentration is 4 mg/ml in PBS-EDTA. No foreign proteins added. Antibody titre: Precipitin titre not less than 1:32 when tested against appropriate concentrations of purified C2 protein in agar-block immunodiffusion titration.
The lyophilized antiserum is shipped at ambient temperature and may be stored at +4°C, prolonged storage at or below -20°C. Reconstitute the lyophilized antiserum by add ing 1 ml sterile distilled water. Dilutions may be prepared by adding phosphate buffered saline (PBS, pH 7.2). Repeated thawing and freezing should be avoided. If a slight precipitation occurs upon storage, this should be removed by centrifugation. It will not affect the performance of the antiserum. Diluted antiserum should be stored at +4°C, not ref rozen, and preferably used the same day.
Target
Complement C2
Andere Bezeichnung
C2 Component of Complement
Hintergrund
The reactivity of the antiserum is restricted to native and activated C2. In immunoelectro-phoresis and radial immunodiffusion, using various antiserum concentrations against human plasma a single precipitin line is obtained and shows a reaction of full identity with the purified immunogen