IgA Secretory Component (Free & Bound) antibody

Catalog No. ABIN457970

There are 2+ publications for this product available. The Goat Polyclonal anti-IgA Secretory Component antibody is suitable to detect IgA Secretory Component in samples from Human. It has been validated for IEP and RID.

Quick Overview for IgA Secretory Component (Free & Bound) antibody (ABIN457970)

Target: IgA Secretory Component

Reactivity: Human

Host: Goat

Clonality: Polyclonal

Conjugate: Un-conjugated

Application: Immunoelectrophoresis (IEP), Radial Immunodiffusion (RID)

Product Details

Binding Specificity: Free & Bound

Purpose: Goat anti Human secretory component (free and bound)

Specificity: Precipitating polyclonal Goat antiSerum to Human secretory component

Cross-Reactivity (Details): Inter-species cross-reactivity is a normal feature of antibodies to Serum proteins, since homologous proteins of different species frequently share antigenic determinants. Cross-reactivity of this antiSerum has not been tested in detail.

Characteristics: Tested in immunoelectrophoresis, double radial immunodiffusion and ELISA against a panel of appropriate secretions and purified Ig isotypes. The antiserum reacts with both bound secretory component (secretory IgA) and with the free SC present in human secretions. In immunoelectrophoresis against human milk, using a high electroendosmosis agar plate, free SC is precipitated in the alph-2 region. The antiserum does not react with other molecular forms of IgA, or with any other secretory or plasma protein. In precipitating techniques as immunoelectrophoresis and single and double radial immunodiffusion to identify the presence secretory component in human serum or other body fluids and to determine its concentration.

Purification: Delipidated, heat inactivated, lyophilized, stable whole antiserum

Immunogen: Secretory component is present in human secretions bound to secretory IgA (sIgA) and in free form. Secretory IgA (sIgA) functions as a dimer or polymer and accounts for almost all specific mucosal antibody activity. A molecule of sIgA is made up of two molecules of IgA, one J chain and one SC (MW 65,000). The dimer IgA is transported into secretions by its binding to the SC on the epithelial cells. Under normal conditions, sIgA contains both subclasses IgA1 and IgA2, since both are capable of binding SC. SC also has an affinity for polymeric IgM. Purified free human secretory component isolated from pooled milk is used for immunization. Freund's complete adjuvant is used in the first step of the immunization procedure.

Isotype: IgG

Application Details

Application Notes: Precipitation assays. In immunoelectrophoresis use 2 μL serum or equivalent against 120 μL antiserum. In double radial immunodiffusion use a rosette arrangement with 10 μL antiserum in 3 mm diameter centre well and 2 μL serum samples (neat and serially diluted) in 2 mm diameter peripheral wells.

Restrictions: For Research Use only

Handling

Format: Lyophilized

Reconstitution: Reconstitute the lyophilized antiserum by adding 1 mL sterile distilled water.

Buffer: Delipidated, heat inactivated, lyophilized, stable whole antiserum No preservative added. Total protein and IgG concentrations in the antiserum are comparable to those of pooled normal goat serum. No foreign proteins added.

Preservative: Without preservative

Storage: 4 °C,-20 °C

Storage Comment: The lyophilized antiserum is shipped at ambient temperature and may be stored at +4°C, prolonged storage at or below -20°C. 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.

References

Roos Ljungberg, Joshua, Skogh, Eklund, Sköld, Karimi, Nyrén, Svärd, Catrina, Kastbom: "Secretory anti-citrullinated protein antibodies in serum associate with lung involvement in early rheumatoid arthritis." in: Rheumatology (Oxford, England), Vol. 59, Issue 4, pp. 852-859, (2020) (PubMed).

Roos, Martinsson, Ziegelasch, Sommarin, Svärd, Skogh, Kastbom: "Circulating secretory IgA antibodies against cyclic citrullinated peptides in early rheumatoid arthritis associate with inflammatory activity and smoking." in: Arthritis research & therapy, Vol. 18, Issue 1, pp. 119, (2017) (PubMed).

Target Details

Target: IgA Secretory Component

Alternative Name: Secretory Immunoglobulin A (SIgA)