IL12RB2

The protein encoded by this gene is a type I transmembrane protein identified as a subunit of the interleukin 12 receptor complex. The coexpression of this and IL12RB1 proteins was shown to lead to the formation of high-affinity IL12 binding sites and reconstitution of IL12 dependent signaling. The expression of this gene is up-regulated by interferon gamma in Th1 cells, and plays a role in Th1 cell differentiation. The up-regulation of this gene is found to be associated with a number of infectious diseases, such as Crohn's disease and leprosy, which is thought to contribute to the inflammatory response and host defense. [provided by RefSeq]

Full Name

interleukin 12 receptor, beta 2

Function

Receptor for interleukin-12. This subunit is the signaling component coupling to the JAK2/STAT4 pathway. Promotes the proliferation of T-cells as well as NK cells. Induces the promotion of T-cells towards the Th1 phenotype by strongly enhancing IFN-gamma production.

Biological Process

Cell surface receptor signaling pathway Source: ProtInc
Cytokine-mediated signaling pathway Source: GO_Central
Peptidyl-tyrosine phosphorylation Source: Ensembl
Positive regulation of cell population proliferation Source: ProtInc
Positive regulation of interferon-gamma production Source: BHF-UCL
Positive regulation of natural killer cell proliferation Source: ComplexPortal
Positive regulation of NK T cell proliferation Source: ComplexPortal
Positive regulation of receptor signaling pathway via JAK-STAT Source: ComplexPortal
Positive regulation of T cell proliferation Source: ComplexPortal
Response to lipopolysaccharide Source: Ensembl

Cellular Location

Membrane

Topology

Extracellular: 24-622
Helical: 623-643
Cytoplasmic: 644-862

PTM

On IL12 binding, phosphorylated on C-terminal tyrosine residues by JAK2. Phosphorylation on Tyr-800 is required for STAT4 binding and activation, and for SOCS3 binding.