IL15 Gene Summary [Human]

The protein encoded by this gene is a cytokine that regulates T and natural killer cell activation and proliferation. This cytokine and interleukine 2 share many biological activities. They are found to bind common hematopoietin receptor subunits, and may compete for the same receptor, and thus negatively regulate each other's activity. The number of CD8+ memory cells is shown to be controlled by a balance between this cytokine and IL2. This cytokine induces the activation of JAK kinases, as well as the phosphorylation and activation of transcription activators STAT3, STAT5, and STAT6. Studies of the mouse counterpart suggested that this cytokine may increase the expression of apoptosis inhibitor BCL2L1/BCL-x(L), possibly through the transcription activation activity of STAT6, and thus prevent apoptosis. Alternatively spliced transcript variants of this gene have been reported. [provided by RefSeq, Feb 2011]

Details

Type
Protein Coding
Official Symbol
IL15
Official Name
interleukin 15 [Source:HGNC Symbol;Acc:HGNC:5977]
Ensembl ID
ENSG00000164136
Bio databases IDs NCBI: 3600 Ensembl: ENSG00000164136
Aliases interleukin 15
Synonyms IL-T, interleukin 15
Species
Human, Homo sapiens
OrthologiesMouseRat

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains in human IL15 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • Interleukin 15
  • protein binding
  • cytokine

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • metastasis
  • neoplasia
  • systemic lupus erythematosus
  • diabetes mellitus
  • epithelial cancer
  • epithelial neoplasia
  • cancer
  • metastatic non-small cell lung cancer
  • septic shock
  • lung metastasis
regulated by
regulates
role in cell
  • killing
  • differentiation
  • expression in
  • proliferation
  • apoptosis
  • upregulation in
  • degradation in
  • growth
  • cell viability
  • production in

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Extracellular Space
  • endosomal fractions
  • membrane fraction
  • Cytoplasm
  • cell surface
  • intracellular space
  • intranuclear region
  • cellular membrane
  • Nucleus
  • Plasma Membrane
  • endosomes
  • Golgi Apparatus
  • Endoplasmic Reticulum
  • cytosol
  • medial face of the Golgi apparatus
  • endosomal compartment
  • nucleoplasm
  • nuclear speckles
  • mast cell secretory granules
  • early endosomes
  • plasma
  • cytosolic fraction

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human IL15 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • neutrophil activation
  • positive regulation of cell proliferation
  • lymph node development
  • positive regulation of tyrosine phosphorylation of STAT protein
  • positive regulation of natural killer cell differentiation
  • immune response
  • natural killer cell proliferation
  • NK T cell proliferation
  • regulation of defense response to virus by host
  • positive regulation of interleukin-17 production
  • positive regulation of tissue remodeling
  • positive regulation of immune response
  • positive regulation of peptidyl-tyrosine phosphorylation
  • macrophage differentiation
  • tyrosine phosphorylation of STAT protein
  • signal transduction
  • positive regulation of inflammatory response
  • cell-cell signaling
  • cell maturation
  • positive regulation of T cell proliferation
  • regulation of T cell differentiation
  • extrathymic T cell selection
  • positive regulation of natural killer cell proliferation
  • natural killer cell differentiation
  • interleukin-15-mediated signaling pathway
  • positive regulation of phagocytosis
  • positive regulation of cytokine production

Cellular Component

Where in the cell the gene product is active
  • extracellular space
  • endosome
  • cytoplasm
  • nuclear speck
  • cytosol
  • Golgi apparatus
  • extracellular region
  • nucleoplasm

Molecular Function

What the gene product does at the molecular level
  • protein binding
  • cytokine activity
  • cytokine receptor binding

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