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Invitrogen
CD19 Monoclonal Antibody (1D3)
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Product Details
MA1-10128
Applications
Tested Dilution
Publications
Product Specifications
Published species
Mouse
Host/Isotype
Rat
/ IgG2a
Class
Monoclonal
Type
Antibody
Clone
1D3
Immunogen
Mouse CD19-transfected cell line
Conjugate
Unconjugated
Unconjugated
Unconjugated
Form
Liquid
Concentration
1 mg/mL
Amount
100 µg
Storage conditions
4°C, do not freeze
Shipping conditions
Ambient (domestic); Wet ice (international)
RRID
Product Specific Information
Low endotoxin azide free phosphate buffered saline (PBS) solution, 0.2 µm filter sterilized. Endotoxin level is less than 0.01 EU/µg of the protein, as determined by the LAL test.
Functional Application: Induction.
Target Information
CD19 is a member of the immunoglobulin superfamily, characterized by two Ig-like domains, and is expressed on B cells throughout all stages of development, excluding terminally differentiated plasma cells. It is also expressed on follicular dendritic cells and has been observed on myeloid leukemia cells, particularly those of monocytic lineage. CD19 is considered the earliest and broadest B cell-restricted antigen, and its expression is found in all B cell precursor leukemias. CD19 forms a multimolecular complex with CD21, CD81, Leu13, MHC class II, and the B cell receptor (BCR), playing a crucial role in B cell signaling. As a signal-amplifying coreceptor for the BCR, CD19 lowers the threshold for antigen receptor-dependent stimulation, allowing B cells to respond specifically and sensitively to various antigens through low-affinity antigen receptors. Signaling through CD19 induces tyrosine phosphorylation, calcium flux, and proliferation of B cells. Beyond its role as a BCR coreceptor, CD19 can also signal independently of BCR co-ligation, serving as a central regulatory component upon which multiple signaling pathways converge. This makes CD19 an important functional regulator of both normal and malignant B cell proliferation. Mutations in the CD19 gene can result in hypogammaglobulinemia, a condition characterized by low levels of immunoglobulins, while CD19 overexpression can lead to B cell hyperactivity. CD19 is expressed on 100% of peripheral B cells, as defined by the expression of kappa or lambda light chains, underscoring its significance in B cell function and immune regulation.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Disclaimer
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Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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