Mouse CD79a Monoclonal Antibody | anti-CD79a antibody

CD79a

Cat. Num. AAA370041

• Gene Names: CD79A; IGA; MB-1
• Reactivity: Human, Canine, Feline, Mouse
• Synonyms: CD79a; Monoclonal Antibody; anti-CD79a antibody

• Host: Mouse
• Reactivity: Human, Canine, Feline, Mouse
• Clonality: Monoclonal
• Isotype: IgG1/K
• Clone Number: JCB117
• Form/Format: CD79a is a mouse monoclonal antibody derived from cell culture supernatant that is concentrated, dialyzed, filter sterilized and diluted in buffer pH 7.5, containing BSA and sodium azide as a preservative.

• Control: Tonsil, Lymph Node
• Localization: Membranous
• Immunogen: Recombinant protein containing part of the extracellular portion of the CD79a glycoprotein.
• Precautions: 1. For professional users only. Results should be interpreted by a qualified medical professional.; 2. This product contains <0.1% sodium azide (NaN3) as a preservative. Ensure proper handling procedures are used with this reagent.; 3. Always wear personal protective equipment such as laboratory coat, goggles and gloves when handling reagents.; 4. Dispose of unused solution with copious amount of water.; 5. Do not ingest reagent. If reagent is ingested, seek medical advice immediately.; 6. Avoid contact with eyes. If contact occurs, flush with large quantities of water.; 7. Follow safety precautions of the heating device used for epitope retrieval (TintoRetriever Pressure Cooker or similar).; 8. For additional safety information refer to Safety Data Sheet for this product.; 9. For complete recommendations for handling biological specimens, please refer to the CDC document, “Guidelines for Safe Work Practices in Human and AMDL”.
• Specimen Preparation: Paraffin sections: The antibody can be used on formalin-fixed paraffin-embedded (FFPE) tissue sections. Ensure tissue undergoes appropriate fixation for best results. Pre-treatment of tissues with heat-induced epitope retrieval (HIER) is recommended using ImmunoDNA Retriever with Citrate, ImmunoDNA Retriever with EDTA or ImmunoDNA Digestor. See reverse side for complete protocol. Tissue should remain hydrated via use of DNA Washer solutions. Frozen sections and cell preparations: The antibody can be used for labeling acetone-fixed frozen sections and acetone-fixed cell preparations.
• Reactivity Note: Paraffin, Frozen
• Staining Procedure: 1. Cut and mount 3-5 micron formalin-fixed paraffin-embedded tissues on positively charged slides such as Hydrophilic Plus Slides.; 2. Air dry for 2 hours at 58° C.; 3. Deparaffinize, dehydrate and rehydrate tissues.; 4. Subject tissues to heat induced epitope retrieval (HIER) using a suitable retrieval solution such as ImmunoDNA Retriever with Citrate or EDTA.; 5. Any of three heating methods may be used:; ; a. TintoRetriever Pressure Cooker or EquivalentPlace tissues/slides in a staining dish or coplin jar containing the ImmunoDNA Retriever with Citrate or EDTA, and place on trivet in the pressure cooker. Add 1-2 inches of distilled water to the pressure cooker and turn heat to high. Incubate for 15 minutes. Open and immediately transfer slides to room temperature.; b. TintoRetriever PT Module or Water Bath Method Place tissues/slides in a pre-warmed staining dish or coplin jar containing the ImmunoDNA Retriever with Citrate or EDTA at 95°-99° C. Incubate for 30-60 minutes.; c. Conventional Steamer MethodPlace tissues/slides in a pre-warmed staining dish or coplin jar containing the ImmunoDNA Retriever with Citrate or EDTA in a steamer, cover and steam for 30-60 minutes.; ; 6. After heat treatment, transfer slides in ImmunoDNA Retriever with Citrate or EDTA to room temperature and let stand for 15-20 minutes.; 7. For manual staining, perform antibody incubation at ambient temperature. For automated staining methods, perform antibody incubation according to instrument manufacturer’s instructions.; 8. Wash slides with ImmunoDNA washer or DI water.; 9. Continue IHC staining protocol. Wash slides between each step with ImmunoDNA washer solution.
• Mounting Protocols: For detailed instructions using biodegradable permanent mounting media such as XyGreen PermaMounter or organic solvent based resin such as PermaMounter, contact Tech Support.
• Product Limitations: Due to inherent variability present in immunohistochemical procedures (including fixation time of tissues, dilution factor of antibody, retrieval method utilized and incubation time), optimal performance should be established through the use of positive and negative controls. Results should be interpreted by a qualified medical professional
• Preparation and Storage: Storage: Store at 2-8?C (Control Slides: Store at 20-25°C); ; Stability: This product is stable up to the expiration date on the product label. Do not use after expiration date listed on package label. Temperature fluctuations should be avoided. Store appropriately when not in use, and avoid prolonged exposure to room temperature conditions.

Testing Data

Immunohistochemistry (IHC)

(Inset: IHC of CD79a on a FFPE Colon Tissue)

Testing Data

(Abbreviated Immunohistochemical Protocol)

Testing Data

(Product Limitations)

Related Product Information for anti-CD79a antibody

CD79a is non-covalently associated with membrane-bound immunoglobulins on B-cells to constitute the B-cell Ag receptor. CD79a first appears at pre B-cell stage and persists until the plasma-cell stage, where it is found as an intracellular component. CD79a is found in the majority of Acute Leukemias of precursor B-cell type, in B-cell lines, B-cell Lymphomas, and in some Myelomas. CD79a is a B-cell marker that is generally used to complement CD20. This antibody will stain many of the same Lymphomas as CD20, but also stains more B-precursor Lymphoid Leukemias than CD20. CD79a also stains more cases of Plasma-cell Myeloma and occasionally some types of endothelial cells as well. CD79a will stain many cases of Acute Promyelocytic Leukemia (FAB-M3), but only rarely stains other types of Myeloid Leukemia.

NCBI and Uniprot Product Information

• NCBI GI #: 1087007
• NCBI GeneID: 973
• UniProt Accession #: P11912; Q53FB8
• NCBI Official Full Name: CD79a
• NCBI Official Synonym Full Names: CD79a molecule, immunoglobulin-associated alpha
• NCBI Official Symbol: CD79A
• NCBI Official Synonym Symbols: IGA; MB-1
• NCBI Protein Information: B-cell antigen receptor complex-associated protein alpha chain; ig-alpha; MB-1 membrane glycoprotein; surface IgM-associated protein; CD79a antigen (immunoglobulin-associated alpha); membrane-bound immunoglobulin-associated protein
• UniProt Protein Name: B-cell antigen receptor complex-associated protein alpha chain
• Protein Family: B-cell antigen receptor complex-associated protein
• UniProt Gene Name: CD79A
• UniProt Synonym Gene Names: IGA; MB1
• UniProt Entry Name: CD79A_HUMAN

NCBI Description

The B lymphocyte antigen receptor is a multimeric complex that includes the antigen-specific component, surface immunoglobulin (Ig). Surface Ig non-covalently associates with two other proteins, Ig-alpha and Ig-beta, which are necessary for expression and function of the B-cell antigen receptor. This gene encodes the Ig-alpha protein of the B-cell antigen component. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq]

Uniprot Description

Function: Required in cooperation with CD79B for initiation of the signal transduction cascade activated by binding of antigen to the B-cell antigen receptor complex (BCR) which leads to internalization of the complex, trafficking to late endosomes and antigen presentation. Also required for BCR surface expression and for efficient differentiation of pro- and pre-B-cells. Stimulates SYK autophosphorylation and activation. Binds to BLNK, bringing BLNK into proximity with SYK and allowing SYK to phosphorylate BLNK. Also interacts with and increases activity of some Src-family tyrosine kinases. Represses BCR signaling during development of immature B cells. Ref.13 Ref.14

Subunit structure: Heterodimer of alpha and beta chains; disulfide-linked. Part of the B-cell antigen receptor complex where the alpha/beta chain heterodimer is non-covalently associated with an antigen-specific membrane-bound surface immunoglobulin of two heavy chains and two light chains. Interacts through its phosphorylated ITAM domain with the SH2 domains of SYK which stimulates SYK autophosphorylation and activation. Also interacts, when phosphorylated on Tyr-210, with the SH2 domain of BLNK/SLP65, bringing BLNK into proximity with SYK and allowing SYK to phosphorylate BLNK which is necessary for trafficking of the BCR to late endosomes. Interacts with Src-family tyrosine kinases including FYN and LYN, increasing their activity

Subcellular location: Cell membrane; Single-pass type I membrane protein. Note: Following antigen binding, the BCR has been shown to translocate from detergent-soluble regions of the cell membrane to lipid rafts although signal transduction through the complex can also occur outside lipid rafts

Tissue specificity: B-cells.

Post-translational modification: Phosphorylated on tyrosine, serine and threonine residues upon B-cell activation. Phosphorylation of tyrosine residues by Src-family kinases is an early and essential feature of the BCR signaling cascade. The phosphorylated tyrosines serve as docking sites for SH2-domain containing kinases, leading to their activation which in turn leads to phosphorylation of downstream targets. Phosphorylation of serine and threonine residues may prevent subsequent tyrosine phosphorylation. Ref.16

Involvement in disease: Defects in CD79A are the cause of agammaglobulinemia type 3 (AGM3) [

MIM:613501]. It is a primary immunodeficiency characterized by profoundly low or absent serum antibodies and low or absent circulating B cells due to an early block of B-cell development. Affected individuals develop severe infections in the first years of life. Note=Two different mutations, one at the splice donor site of intron 2 and the other at the splice acceptor site for exon 3, have been identified. Both mutations give rise to a truncated protein. Ref.15 Ref.17

Sequence similarities: Contains 1 Ig-like C2-type (immunoglobulin-like) domain.Contains 1 ITAM domain.