Version: 8.0.0Date: Tue Jan 28 2025
Gene
CD19
- Species
- Homo sapiens
- Symbol
- CD19
- Name
- CD19 molecule
- Synonyms
- B-lymphocyte antigen CD19
- B-lymphocyte surface antigen B4
- Biotype
- protein coding gene
- Automated Description
- Involved in several processes, including B cell proliferation involved in immune response; antigen receptor-mediated signaling pathway; and regulation of signal transduction. Located in external side of plasma membrane. Part of protein-containing complex. Implicated in common variable immunodeficiency 3.
- RGD Description
- 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]
- Cross References
- Additional Information
- Literature
Orthology
- Gene tree
- PANTHER:PTHR16674
Links to orthology data in JBrowse by filter level: Stringent, Moderate, No filter, Best and Best Reverse
Phenotypes
- Primary Sources
- None
- Other Sources
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Disease Associations
Cases where the expected disease association was NOT found
Cell color indicative of annotation volume
No data available
Alleles and Variants
Allele/Variant Symbol | Allele Synonyms | Category | Variant | Variant type | Molecular consequence | Has Disease Annotations | Has Phenotype Annotations |
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Transgenic Alleles
Species (carrying the transgene) | Allele symbol | Transgenic construct | Expressed components | Knock-down targets | Regulatory regions | Has Disease Annotations | Has Phenotype Annotations |
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Models
Model name | Experimental condition | Associated Human Diseases | Associated Phenotypes | Modifier | Source |
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Sequence Feature Viewer
- Genome location
- Chr16:28931965...28939342 + (7.38 kb)
- Assembly version
- GRCh38
- Viewer Help
Data currently unavailable; sequence viewer under construction
Expression
- Primary Sources
- None
- Other Sources
Cell color indicative of annotation volume; red slash indicates species lacks structure or developmental stage.