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Product Details
SHAHU-C4BP
Product Specifications
Species Reactivity
Human
Host/Isotype
Sheep
/ IgG
Class
Polyclonal
Type
Antibody
Immunogen
Human C4 binding protein
Conjugate
Form
Lyophilized
Storage buffer
whole serum
Contains
no preservative
Storage conditions
Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.
Shipping conditions
Ambient (domestic); Wet ice (international)
Product Specific Information
Reconstitute the lyophilized antiserum by adding 1 mL sterile distilled water.
The antiSerum does not cross-react with any other Human plasma proteins as tested in geldiffusion techniques. Inter-species cross-reactivity is a normal feature of antibodies to plasma proteins, since homologous proteins of different species frequently share antigenic determinants. Cross-reactivity of this antiSerum has not been tested in detail.
In immunoelectrophoresis in agarose-plates use 2 µL human plasma or equivalent against 120 µL antiserum. In double radial immunodiffusion use a rosette arrangement with 10 µL antiserum in 3 mm diameter center well and 2 µL plasma samples (neat and serially diluted) in 2 mm diameter peripheral wells.
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 refrozen, and preferably used the same day.
Target Information
Complement component 4-binding protein (C4BP) is a plasma glycoprotein that inhibits the classical pathway of complement activation, which is mediated through antibody targeting of foreign antigen. Structurally, C4BP is a disulfide linked, multimeric protein that is composed of seven alpha chains and one beta chain. C4BP functions as a cofactor for C3beta inactivator in the cleavage of C3beta, and accelerates the decay of C4betaC2alpha (C3 convertase) by acting as a cofactor in the cleavage of C4beta by factor I. Streptococcal strains that express Ig-binding cell surface molecules, which are members of the M protein family, can bind to overlapping C4beta binding sites in C4BP and therefore, interfere with the classical pathway of complement activation. Bacteria-bound C4BP may be an evolved mechanism that downregulates complement activation in the bacterial host microenvironment, thereby reducing the occurrences of bacterial opsonization and phagocytosis.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: C4b-binding protein beta chain
Gene Aliases: C4BP; C4BPB
UniProt ID: (Human) P20851
Entrez Gene ID: (Human) 725
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