Cytokine with a wide variety of biological functions. It is a potent inducer of the acute phase response. Plays an essential role in the final differentiation of B-cells into Ig- secreting cells Involved in lymphocyte and monocyte differentiation. It induces myeloma and plasmacytoma growth and induces nerve cells differentiation Acts on B-cells, T-cells, hepatocytes, hematopoietic progenitor cells and cells of the CNS. Also acts as a myokine. It is discharged into the bloodstream after muscle contraction and acts to increase the breakdown of fats and to improve insulin resistance. Genetic variations in IL6 are associated with susceptibility to rheumatoid arthritis systemic juvenile (RASJ). An inflammatory articular disorder with systemic- onset beginning before the age of 16. It represents a subgroup of juvenile arthritis associated with severe extraarticular features and occasionally fatal complications. During active phases of the disorder, patients display a typical daily spiking fever, an evanescent macular rash, lymphadenopathy, hepatosplenomegaly, serositis, myalgia and arthritis. A IL6 promoter polymorphism is associated with a lifetime risk of development of Kaposi sarcoma in HIV-infected men. Belongs to the IL-6 superfamily. Note: This description may include information from UniProtKB.
Protein type: Secreted; Secreted, signal peptide
Cellular Component: extracellular space; cell; cytoplasm; extracellular region; interleukin-6 receptor complex; external side of plasma membrane
Biological Process: positive regulation of nitric oxide biosynthetic process; positive regulation of apoptosis; positive regulation of transcription, DNA-dependent; negative regulation of collagen biosynthetic process; negative regulation of cytokine secretion; response to glucocorticoid stimulus; positive regulation of JAK-STAT cascade; positive regulation of tyrosine phosphorylation of Stat3 protein; regulation of apoptosis; muscle maintenance; regulation of cell shape; positive regulation of T-helper 2 cell differentiation; positive regulation of acute inflammatory response; negative regulation of gluconeogenesis; acute-phase response; positive regulation of T cell proliferation; cell growth; defense response to virus; neurite development; positive regulation of protein import into nucleus, translocation; positive regulation of interleukin-6 production; defense response to protozoan; positive regulation of chemokine production; positive regulation of peptidyl-tyrosine phosphorylation; cell redox homeostasis; positive regulation of B cell activation; neutrophil apoptosis; negative regulation of protein kinase activity; positive regulation of transcription factor activity; positive regulation of transcription from RNA polymerase II promoter; positive regulation of epithelial cell proliferation; negative regulation of apoptosis; negative regulation of muscle development; T cell activation; positive regulation of translation; positive regulation of smooth muscle cell proliferation; negative regulation of hormone secretion; negative regulation of caspase activity; regulation of circadian sleep/wake cycle, non-REM sleep; negative regulation of cell proliferation; positive regulation of MAPKKK cascade; positive regulation of cell proliferation; response to wounding; hepatic immune response; inflammatory response; negative regulation of chemokine biosynthetic process; cytokine and chemokine mediated signaling pathway; positive regulation of immunoglobulin secretion; endocrine pancreas development; positive regulation of peptidyl-serine phosphorylation; regulation of cell proliferation; positive regulation of protein kinase B signaling cascade; immune response; positive regulation of neuron differentiation; positive regulation of DNA replication; positive regulation of transmission of nerve impulse
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.