Product Profile

Product Name	Anti-CD19 antibody
Antibody Type	Primary Antibodies
Immunogen	Polypeptide

Key Feature

Clonality	Polyclonal
Isotype	IgG
Host Species	Rabbit
Tested Application	ELISAICC/IFIHCWB
	WB:1:200-1:2000 IHC:1:200-1:1000 ICC/IF:1:100-1:500
Species Reactivity	HumanMouseRat
Concentration	1 mg/ml
Purification	Protein A

Target Information

Gene Symbol	CD19
Gene Synonyms	B4 CVID3
Gene Full Name	CD19 molecule
Gene Summary	This gene encodes a member of the immunoglobulin gene superfamily. Expression of this cell surface protein is restricted to B cell lymphocytes. This protein is a reliable marker for pre-B cells but its expression diminishes during terminal B cell differentiation in antibody secreting plasma cells. The protein has two N-terminal extracellular Ig-like domains separated by a non-Ig-like domain, a hydrophobic transmembrane domain, and a large C-terminal cytoplasmic domain. This protein forms a complex with several membrane proteins including complement receptor type 2 (CD21) and tetraspanin (CD81) and this complex reduces the threshold for antigen-initiated B cell activation. Activation of this B-cell antigen receptor complex activates the phosphatidylinositol 3-kinase signalling pathway and the subsequent release of intracellular stores of calcium ions. This protein is a target of chimeric antigen receptor (CAR) T-cells used in the treatment of lymphoblastic leukemia. Mutations in this gene are associated with the disease common variable immunodeficiency 3 (CVID3) which results in a failure of B-cell differentiation and impaired secretion of immunoglobulins. CVID3 is characterized by hypogammaglobulinemia, an inability to mount an antibody response to antigen, and recurrent bacterial infections. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2020] Hide
Molecular Weight(MW)	61 kDa
Source	Rabbit
Cellular Localizatio	Membrane

Application

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WB

Western blot analysis using CD19 antibody against HepG2 (1), PC-3 (2), SK-OV-3 (3), T24 (4) cell lysate.

IHC

Immunohistochemical analysis of paraffin-embedded lung cancer tissues using CD19 antibody with DAB staining.

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ICC/IF

Immunofluorescence analysis of A549 cells using CD19 antibody (green). Blue: DAPI fluorescent DNA dye. Red: Actin filaments have been labeled with Alexa Fluor- 555 phalloidin.

Application Notes

WB:1:200-1:2000 IHC:1:200-1:1000 ICC/IF:1:100-1:500

Additional Information

Form	Liquid
Storage Instruction	Shipped at 4°C. Store at +4°C short term (1-2 weeks). Store at -20°C long term. Avoid freeze / thaw cycle.
Storage Buffer	Purified antibody in PBS with 0.05% sodium azide.