Human CD79B Antibody

Catalog # Availability Size / Price Qty
Detection of CD79B in Human peripheral blood lymphocytes by Flow Cytometry.
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Product Details
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Human CD79B Antibody Summary

Species Reactivity
Detects human CD79B in direct ELISAs and Western blots. In direct ELISAs, approximately 50% cross-reactivity with recombinant mouse CD79B is observed.
Polyclonal Sheep IgG
Antigen Affinity-purified
Chinese hamster cell line CHO-derived recombinant human CD79B
Accession # P40259
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
0.5 µg/mL
See below
Flow Cytometry
2.5 µg/106 cells
See below
Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Data Examples

Flow Cytometry Detection of CD79B antibody in Human peripheral blood lymphocytes antibody by Flow Cytometry. View Larger

Detection of CD79B in Human peripheral blood lymphocytes by Flow Cytometry. Human peripheral blood lymphocytes were stained with Sheep Anti-Human CD79B Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6620) followed by NorthernLights™ 637-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # NL011) and Mouse Anti-Human CD19 PE-conjugated Monoclonal Antibody (Catalog # FAB4867P). Quadrant markers were set based on control antibody staining (Catalog # 5-001-A).

Western Blot Detection of Human CD79B antibody by Western Blot. View Larger

Detection of Human CD79B by Western Blot. Western blot shows lysates of Nalm-6 human Pre-B acute lymphocytic leukemia cell line. PVDF membrane was probed with 0.5 µg/mL of Sheep Anti-Human CD79B Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6620) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for CD79B at approximately 40kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Sterile PBS to a final concentration of 0.2 mg/mL.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: CD79B

CD79B (also known as B29, Ig beta and B cell antigen receptor complex-associated protein beta -chain) is a 36-40 kDa member of the Ig-Superfamily. It is expressed on B cells, and forms a covalent heterodimer with 44-49 kDa CD79A. This complex interacts noncovalently with membrane Ig, forming the B cell antigen receptor. Within this complex, membrane Ig detects antigen while CD79A:B initiates signaling. Mature human CD79B is a 201 amino acid (aa) type I tranamembrane glycoprotein (aa 29‑229). It contains an extracellular region with one V-type Ig-like domain (aa 38-138) and an ITAM-containing cytoplasmic domain (aa 181-229). There is an alternative splice form that shows a deletion of aa 41-144 and appears after B cell activation. Human CD79A and B share only 26% aa identity. Over aa 29-159, human CD79B shares 54% aa identity with mouse CD79B.

Entrez Gene IDs
974 (Human); 15985 (Mouse); 171055 (Rat); 102145117 (Cynomolgus Monkey)
Alternate Names
B29; B29B-cell-specific glycoprotein B29; B-cell antigen receptor complex-associated protein beta chain; CD79B antigen (immunoglobulin-associated beta); CD79b antigen; CD79b molecule, immunoglobulin-associated beta; CD79B; IGB; IGBAGM6; Ig-beta; Immunoglobulin-associated B29 protein

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