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Target intelligence / Profile preview
Immunoglobulin kappa joining 5 (IGKJ5)
- Target
- IGKJ5
- Molecular classification
- Other (Immunoglobulin gene segment)
01
Overview
Immunoglobulin kappa joining 5 is one of five functional J (joining) segments of the human immunoglobulin kappa light chain locus on chromosome 2p11.2. These J segments are essential for antibody gene recombination, allowing B cells to assemble highly diverse antigen binding sites by combining a variable (V) region segment with a joining (J) segment during lymphocyte development. The IGKJ5 segment itself encodes for a short amino acid stretch that is part of the antibody light chain, specifically at the V-J junction, but it is not expressed as a standalone protein, nor does it have any receptor or enzyme activity. Its role is strictly genetic, enabling the immense diversity of antibody specificities crucial for adaptive immunity. The nomenclature and function of IGKJ5 are identical in major genomic databases (IMGT, HUGO), and it is not considered a therapeutic drug target or biomarker.
- Other names
- J5IGKJ5Immunoglobulin kappa joining segment 5Immunoglobulin kappa J region 5
02
Biological functions
Immunoglobulin gene recombinationAntibody diversityAssembly of kappa light chains
03
Disease associations
Other (Contributes to normal immune system function; not directly implicated in disease, but abnormalities in immunoglobulins can relate to immunodeficiencies or lymphoid malignancies)
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