Rat anti-Mouse CD19 Monoclonal Antibody | anti-CD19 antibody
Rat Anti-Mouse CD19-SPRD
CD19 is a monomeric transmembrane glycoprotein expressed at relatively constant levels throughout B cell development from early pro-B/pre-B cells (i.e. B220^+/CD43^+/HSA^+) through fully differentiated B cell stages. ^1-7 Terminally differentiated plasma cells do not express CD19. ^1 In humans, the CD19 molecule on the surface of mature B cells associates with CD21 (CR-2) and CD81 (TAPA-1), and this multimolecular complex synergizes with surface immunoglobulin to provide signal transduction and promote cellular activation. ^3, 4 All splenic and peritoneal IgM^+ cells of both B-1 and B-2 lineages are CD19^+, with B-1 cells expressing higher levels of CD19 than B-2 cells in these sites.1, 7 Recent studies with CD19-deficient mice have suggested that this molecule may not be required for normal generation and maturation of B cells in the bone marrow. ^7 Monoclonal antibody 6D5 recognizes the same epitope as the published clone, 1D3. ^1, 8
Flow Cytometry Suggested Dilution: <= 0.2 ug/10^6 cells
The fluorescein (FITC) conjugate is supplied as 0.5 mg or 0.1 mg in 1.0 mL of PBS/NaN3. Store at 2-8 degree C.
The biotin (BIOT) conjugate is supplied as 0.5 mg in 1.0 mL of PBS/NaN3. Store at 2-8 degree C.
The R-phycoerythrin (R-PE) conjugate is supplied as 0.1 mg in 1.0 mL or 0.2 mg in 2.0 mL of PBS/NaN3 and a stabilizing agent. Store at 2-8 degree C. Do not freeze!
The allophycocyanin (APC), Spectral Red (SPRD), R-phycoerythrin-Cyanine 7 (R-PE-CY 7) and Rphycoerythrin- Cyanine 5.5 (R-PE-CY 5.5) conjugates are supplied as 0.1 mg in 1.0 mL of PBS/NaN3 and a stabilizing agent. Store at 2-8 degree C. Do not freeze!
The low endotoxin, azide-free (LE/AF) antibody is supplied as 0.5 mg purified immunoglobulin in 1.0 mL of PBS. Aliquot and store at or below -20 degree C.
The Cyanine 5 (CY 5) conjugate is supplied as 0.1 mg in 1.0 mL of PBS/NaN3. Store at 2-8 degree C.
The Alexa Fluor 488 (AF488) conjugate is supplied as 0.1mg in 0.2mL of PBS/NaN3. Store at 2-8 degree C.
Protect conjugated forms from light. Aliquot and freeze the low endotoxin, azide-free product at -20 degree C immediately upon receipt. Each reagent is stable for the period shown on the bottle label if stored as directed.
2. Krop, I., A.L. Shaffer, D.T. Fearon, and M.S. Schlissel. 1996. J. Immunol. 157:48.
3. Fearon, D.T. 1993. Curr. Opin. in Immunol. 5:341.
4. Tedder, T.F., L.-J. Zhou, and P. Engel. 1994. Immunol. Today 15:437.
5. Rickert, R.C., K. Rajewsky, and J. Roes. 1995. Nature 376:352.
6. Engel, P., L.-J. Zhou, D.C. Ord, S. Sato, B. Koller, and T.F. Tedder. 1995. Immunity 3:39.
7. Rolink, A., E. ten Boekel, F. Melchers, D.T. Fearon, I. Krop, and J. Andersson. 1996. J. Exp. Med. 183:187.
8. de Fougerolles, A.R. 1996. Personal communication.
NCBI and Uniprot Product Information
NCBI Description
Lymphocytes proliferate and differentiate in response to various concentrations of different antigens. The ability of the B cell to respond in a specific, yet sensitive manner to the various antigens is achieved with the use of low-affinity antigen receptors. This gene encodes a cell surface molecule which assembles with the antigen receptor of B lymphocytes in order to decrease the threshold for antigen receptor-dependent stimulation. [provided by RefSeq]
Uniprot Description
Function: Assembles with the antigen receptor of B lymphocytes in order to decrease the threshold for antigen receptor-dependent stimulation.
Subunit structure: Forms a complex with CD21, CD81 and CD225 in the membrane of mature B cells. Interacts with VAV. Interacts with GRB2 and SOS when phosphorylated on Tyr-348 and/or Tyr-378. Interacts with PLCG2 when phosphorylated on Tyr-409. Ref.11
Subcellular location: Membrane; Single-pass type I membrane protein.
Post-translational modification: Phosphorylated on serine and threonine upon DNA damage, probably by ATM or ATR. Phosphorylated on tyrosine following B-cell activation. Ref.10 Ref.11 Ref.12
Involvement in disease: Defects in CD19 are the cause of immunodeficiency common variable type 3 (CVID3) [
MIM:613493]; also called antibody deficiency due to CD19 defect. CVID3 is a primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen. The defect results from a failure of B-cell differentiation and impaired secretion of immunoglobulins; the numbers of circulating B cells is usually in the normal range, but can be low. Ref.13
Sequence similarities: Contains 2 Ig-like C2-type (immunoglobulin-like) domains.
Sequence caution: The sequence AAA35533.1 differs from that shown. Reason: Frameshift at position 396.
Research Articles on CD19
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Product Notes
The CD19 cd19 (Catalog #AAA673242) is an Antibody produced from Rat and is intended for research purposes only. The product is available for immediate purchase. The Rat Anti-Mouse CD19-SPRD reacts with Mouse and may cross-react with other species as described in the data sheet. AAA Biotech's CD19 can be used in a range of immunoassay formats including, but not limited to, Flow Cytometry; Immunoprecipitation. Research Application(s): In vivo and in vitro functional studies Flow Cytometry Suggested Dilution: <= 0.2 ug/10^6 cells. Researchers should empirically determine the suitability of the CD19 cd19 for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "CD19, Monoclonal Antibody" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.Disclaimer
Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.Item has been added to Shopping Cart
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