CD79a Antibody

A disulphide-linked heterodimer, consisting of mb-1 (or CD79a) and B29 (or CD79b) polypeptides, is non-covalently associated with membrane-bound immunoglobulins on B cells. This complex of mb-1 and B29 polypeptides and immunoglobulin constitute the B-cell Ag receptor. CD79a first appears at pre B-cell stage, early in maturation, and persists until the plasma cell stage where it is found as an intracellular component. It is found in the majority of acute leukemias of B-cell precursors, lines and lymphomas, and in some myelomas. It is not present in myeloid or Tcell lines. CD79a antibody is generally used to complement CD20 mAb, especially for mature B-cell lymphomas after treatment with Rituximab (anti-CD20) . This CD79a antibody will stain many of the same lymphomas as CD20 mAb, but also is more likely to stain B-lymphoblastic lymphoma/leukemia than is CD20 mAb. CD79a antibody also stains more cases of plasma cell myeloma and occasionally some types of endothelial cells as well.

Product Specifications

CAS Number

9007-83-4

Specifications

Western blot: 1-2 µg/mL, Flow cytometry: 1-2ug/10^6 cells, Immunofluorescence: 1-2 µg/mL, Immunohistochemistry (FFPE) : 1-2 µg/mL for 30 min at RT

Host

Mouse

Reactivity

Human

Immunogen

A soluble form of the extracellular IgSF domain from the human protein was used as the immunogen for the CD79a antibody.

Clonality

Monoclonal

Isotype

IgG1 k

Clone

JCB117

Applications

WB, FACS, IF, IHC-P

Purity

Protein G affinity chromatography

Format

Purified

Buffer

0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide

Reconstitution

Store the CD79a antibody at 2-8oC (with azide) or aliquot and store at -20oC or colder (without azide).

Limitations

This CD79a antibody is available for research use only.

Storage Conditions

Store the CD79a antibody at 2-8°C (with azide) or aliquot and store at -20°C or colder (without azide) .

Formulation

0.2 mg/mL in 1X PBS with 0.1 mg/mL BSA (US sourced) and 0.05% sodium azide

Applications Notes

The concentration stated for each application is a general starting point. Variations in protocols, secondaries and substrates may require the CD79a antibody to be titered up or down for optimal performance.1. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.

Location

Cell surface, cytoplasmic

Image Legend

IHC testing of FFPE human tonsil stained with CD79a antibody (clone JCB117) . Required HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 10-20 min followed by cooling at RT for 20 minutes.