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Overview

Uniprot IDA0A0B4J1V0
Protein NameImmunoglobulin heavy variable 3-15
Gene NameIGHV3-15
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
73 WVGRIKSKTDGGTTD
86 TDYAAPVKGRFTISR

Function

V region of the variable domain of immunoglobulin heavy chains that participates in 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:20176268, PubMed:22158414). 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:17576170, PubMed:20176268)

Protein Sequence

10 MEFGLSWIFL 20 AAILKGVQCE 30 VQLVESGGGL 40 VKPGGSLRLS 50 CAASGFTFSN 60 AWMSWVRQAP 70 GKGLEWVGRI 80 KSKTDGGTTD 90 YAAPVKGRFT 100 ISRDDSKNTL 110 YLQMNSLKTE DTAVYYCTT

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005886 plasma membrane
Cellular Component GO:0005576 extracellular region
Cellular Component GO:0019814 immunoglobulin complex
Molecular Function GO:0003823 antigen binding
Biological Process GO:0016064 immunoglobulin mediated immune response

Reference

[1] Yang Z, Yan C, Ma J, Peng P, Ren X et al.. Lactylome analysis suggests lactylation-dependent mechanisms of metabolic adaptation in hepatocellular carcinoma.. Nat Metab 5(1):61-79. 2023 Jan. PMID: 36593272.