The total protein is measured using the Biuret procedure with bovine albumin as the standard. To ensure that the product titer falls within the required range, antibody titer is standardized by microtiter plate ELISA with human IgG. The product is tested for purity and specificity at final concentration by immunoelectrophoresis.
Preparation Method
Antibody and highly purified HRP (Rz>3.0) are conjugated under defined conditions to obtain optimally labeled product. Conjugated protein is purified by salt fractionation. The product is dialyzed into 0.02M sodium phosphate, 0.14M sodium chloride, pH 7.3, with 0.01% thimerosal, adjusted to standard titer, filtered through a 0.22 µm filter, vialed and lyophilized.
Applications
Peroxidase-Conjugated Goat IgG Fraction to Human IgG F(ab')2 is suitable for use as a reagent in enzyme immunoassays (EIA), cell and immunostaining of acetone-fixed frozen and formalin-fixed, paraffin-embedded tissue sections, cell and tissue labeling (for electron microscopy), and blot immunostaining. (Note: F(ab')2 fragments are recommended for staining of cells or tissues which contain Fc receptors. Affinity purified antibodies or their fragments are recommended to avoid non-specific binding from inherent antibodies of host animals. Also used in Immunohistochemistry, EIA and Western blots.
Product Description
Peroxidase-Conjugated Goat IgG Fraction to Human IgG F(ab')2 is the lyophilized powder of horseradish peroxidase (HRP)-conjugated goat IgG fraction to human IgG F(ab')2 and buffer salts.
Typical Working Concentration
Immunohistochemistry: 1:500 - 1:5000; EIA and Western blots: 1:5000 - 1:100,000. Dilution recommended: 1:500 - 1:4,000 for Tissue Staining; 1:1,000 - 1:8,000 for Immuno Blotting; 1:2,000 - 1:16,000 for ELISA/FIA
Trade Name
Cappel™
Properties
Concentration
Total Protein: 5.9 mg/mL; Titer: 1:192,000
Key Applications
Immunostaining of acetone-fixed frozen and formalin-fixed, paraffin-embedded tissue sections
Application Areas
Immunoassays
Product Type
Antibodies
Antibody Type
Secondary Antibodies
Antibody Category
Polyclonal
Conjugate
HRP
Host
Goat
Immunogen
Purified human IgG
Species Reactivity
It shows reactivity to human IgG F(ab')2; cross-reactivity to other species may exist. Because the product is directed against F(ab')2, some antibodies are expected to bind light chain sites common to all immunoglobulins.
Format
Lyophilized IgG
NOTES
No trace of albumin is detected. Antibody activity to Fc or non-immunoglobulin serum proteins is not present.
Specificity
Based on immunoelectrophoresis, the antibody reacts with the heavy chains on human IgG and with light chains common to most human immunoglobulins. No antibody was detected against non-immunoglobulin serum proteins, but the antibody may cross-react with immunoglobulins from other species.
Solubility
Reconstitution: Reconstitute product with 2.0 mL of deionized or distilled water. Gentle swirling may be used to speed rehydration. Do not add sodium azide. Avoid vigorous shaking of the reconstituted material.
Storage & Handling
Store lyophilized product at 2-8 °C. For long-term storage, aliquot and freeze reconstituted product at -20 °C or lower.
Certifications
The antibody is predominantly goat IgG.
Packsize Numeric Quantity
2 mL
Concentration
Total Protein: 5.9 mg/mL; Titer: 1:192,000
Key Applications
Immunostaining of acetone-fixed frozen and formalin-fixed, paraffin-embedded tissue sections