Rabbit anti-Human LAG3 Polyclonal Antibody

Uniprot Id

P18627

Target Species

Human

Target Name

LAG3

Target Full Name

Lymphocyte activation gene 3 protein

Target Function

Lymphocyte activation gene 3 protein: Inhibitory receptor on antigen activated T-cells. Delivers inhibitory signals upon binding to ligands, such as FGL1. FGL1 constitutes a major ligand of LAG3 and is responsible for LAG3 T-cell inhibitory function. Following TCR engagement, LAG3 associates with CD3-TCR in the immunological synapse and directly inhibits T-cell activation. May inhibit antigen-specific T-cell activation in synergy with PDCD1/PD-1, possibly by acting as a coreceptor for PDCD1/PD-1. Negatively regulates the proliferation, activation, effector function and homeostasis of both CD8(+) and CD4(+) T-cells. Also mediates immune tolerance: constitutively expressed on a subset of regulatory T-cells (Tregs) and contributes to their suppressive function. Also acts as a negative regulator of plasmacytoid dendritic cell (pDCs) activation. Binds MHC class II (MHC-II); the precise role of MHC-II-binding is however unclear.; May function as a ligand for MHC class II (MHC-II) on antigen-presenting cells (APC), promoting APC activation/maturation and driving Th1 immune response.

Target Subcellular Location

[Lymphocyte activation gene 3 protein]: Cell membrane; Single-pass type I membrane protein.; [Secreted lymphocyte activation gene 3 protein]: Secreted.

Target Tissue Specificity

Primarily expressed in activated T-cells and a subset of natural killer (NK) cells.

Target Research Area

Immunology

Target Synonyms

CD223; CD223 antigen; FDC protein; LAG-3; Lag3; LAG3_HUMAN; Lymphocyte activating 3; Lymphocyte activation gene 3; Lymphocyte activation gene 3 protein; Protein FDC

Target Background

Lymphocyte-activation protein 3 belongs to Ig superfamily and contains 4 extracellular Ig-like domains. The LAG3 gene contains 8 exons. The sequence data, exon/intron organization, and chromosomal localization all indicate a close relationship of LAG3 to CD4.