UniProt functional annotation for P40933

UniProt code: P40933.

Organism: Homo sapiens (Human).
Taxonomy: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.
 
Function: Cytokine that stimulates the proliferation of T-lymphocytes (PubMed:8178155). Stimulation by IL15 requires interaction of IL15 with components of the IL2 receptor, including IL2RB and probably IL2RG but not IL2RA (PubMed:8178155). In neutrophils, stimulates phagocytosis probably by signaling through the IL15 receptor, composed of the subunits IL15RA, IL2RB and IL2RG, which results in kinase SYK activation (PubMed:15123770). {ECO:0000269|PubMed:15123770, ECO:0000269|PubMed:8178155}.
 
Subcellular location: [Isoform IL15-S48AA]: Secreted.
Subcellular location: [Isoform IL15-S21AA]: Cytoplasm. Nucleus. Note=IL15-S21AA is not secreted, but rather is stored intracellularly, appearing in the nucleus and cytoplasmic components.
Tissue specificity: Most abundant in placenta and skeletal muscle. It is also detected in the heart, lung, liver and kidney. IL15-S21AA is preferentially expressed in tissues such as testis and thymus.
Similarity: Belongs to the IL-15/IL-21 family. {ECO:0000305}.
Sequence caution: Sequence=CAA71044.1; Type=Miscellaneous discrepancy; Note=Man-made cDNA with a signal peptide sequence to increase protein secretion (substitution with a signal peptide derived from the mouse IgV kappa chain).; Evidence={ECO:0000305};

Annotations taken from UniProtKB at the EBI.