Tdark IGKV4-1 Immunoglobulin kappa variable 4-1

Protein Summary

Description

V segment of the variable domain of immunoglobulins light chain that participates to the antigen recognition (PubMed:24600447). Immunoglobulins, also known as antibodies, are membrane-bound or secreted glycoproteins produced by B lymphocytes. In the recognition phase of humoral immunity, the membrane-bound immunoglobulins serve as receptors which, upon binding of a specific antigen, trigger the clonal expansion and differentiation of B lymphocytes into immunoglobulins-secreting plasma cells. Secreted immunoglobulins mediate the effector phase of humoral immunity, which results in the elimination of bound antigens (PubMed:22158414, PubMed:20176268). The antigen binding site is formed by the variable domain of one heavy chain, together with that of its associated light chain. Thus, each immunoglobulin has two antigen binding sites with remarkable affinity for a particular antigen. The variable domains are assembled by a process called V-(D)-J rearrangement and can then be subjected to somatic hypermutations which, after exposure to antigen and selection, allow affinity maturation for a particular antigen (PubMed:20176268, PubMed:17576170).

Uniprot Accession IDs

• P06312
• P01625
• P06313
• P06314
• P83593

Gene Name

• IGKV4-1

Ensembl ID

• ENST00000390243
• ENSP00000374778
• ENSG00000211598

Symbol

• B3
• IGKV41

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
cell type or tissue	0.97
tissue	0.89
pathway	0.74
interacting protein	0.46
small molecule perturbation	0.46

Protein Classes

PANTHER Classes

Protein / Defense/immunity Protein / Immunoglobulin / Immunoglobulin Kappa Variable 4-1

DTO Classes

Protein / Immune Response / Immunoglobulin / Immunoglobulin Kappa Variable 4-1

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 0   (req: < 5)

Gene RIFs: 0   (req: <= 3)

Antibodies: 0   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 0   (req: >= 5)

Gene RIFs: 0   (req: > 3)

Antibodies: 0   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 12

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0