CD19 Antibody [Alexa Fluor® 594]

• Reactivity: Rt
• Applications: WB
• Clonality: Polyclonal
• Host: Sheep
• Conjugate: Alexa Fluor 594

CD19 Antibody [Alexa Fluor® 594] Summary

• Immunogen: Chinese hamster ovary cell line recombinant rat CD19
  Arg19-Gly287
  Accession # NP_001013255
• Specificity: Detects rat CD19 in direct ELISAs and Western blots. In direct ELISAs, approximately 25% cross-reactivity with recombinant human CD19 is observed.
• Isotype: IgG
• Clonality: Polyclonal
• Host: Sheep
• Purity: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Western Blot

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide
• Purity: Antigen Affinity-purified

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for CD19 Antibody [Alexa Fluor® 594]

• B4
• B-lymphocyte antigen CD19
• B-lymphocyte surface antigen B4
• CD19 antigen
• CD19 molecule
• CD19
• CVID3
• Differentiation antigen CD19
• Leu-12
• MGC12802
• T-cell surface antigen Leu-12

Background

CD19 (also surface antigen B4 and Leu12) is a 95-110 kDa member of the Immunoglobulin superfamily of molecules. It is expressed by B cells, and interacts with CD21 for the purpose of reducing the threshold of the antigen signal needed to with activate the BCR. CD19 ligation also promotes B cell:follicular dendritic cell (FDC) interaction and B cell proliferation in the FDC zone of the spleen. Mature rat CD19 is a 529 amino acid (aa) type I transmembrane glycoprotein (aa 19-547). Based on mouse, it contains a 269 aa extracellular region (aa 19-287) plus a 236 aa cytoplasmic domain. The extracellular region possesses two C2-type Ig-like domains (aa 20-113 and 171-271) and one utilized phosphorylation site at Ser225. The cytoplasmic domain contains five potential Tyr phosphorylation sites. There is one splice form that shows a two aa substitution after Gly489. Over aa 19-287, rat CD19 shares 88% and 57% aa sequence identity with mouse and human CD19, respectively.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.