Macrophage Migration Inhibitor Factor (MIF) Human Active Protein

This gene encodes a lymphokine involved in cell-mediated immunity, immunoregulation, and inflammation. It plays a role in the regulation of macrophage function in host defense through the suppression of anti-inflammatory effects of glucocorticoids. This lymphokine and the JAB1 protein form a complex in the cytosol near the peripheral plasma membrane, which may indicate an additional role in integrin signaling pathways. [provided by RefSeq, Jul 2008]

MIF: a lymphokine involved in cell-mediated immunity, immunoregulation, and inflammation. It plays a role in the regulation of macrophage function in host defense through the suppression of anti-inflammatory effects of glucocorticoids. This lymphokine and the JAB1 protein form a complex in the cytosol near the peripheral plasma membrane, which may indicate an additional role in integrin signaling pathways. Also acts as a phenylpyruvate tautomerase.

Protein type: Amino Acid Metabolism - tyrosine; Cytokine; Apoptosis; Amino Acid Metabolism - phenylalanine; Cell development/differentiation; Isomerase; EC 5.3.3.12; EC 5.3.2.1

Chromosomal Location of Human Ortholog: 22q11.23

Cellular Component: nucleoplasm; extracellular space; cell surface; cytoplasm; extracellular region; vesicle

Molecular Function: phenylpyruvate tautomerase activity; protein binding; hematopoietin/interferon-class (D200-domain) cytokine receptor binding; cytokine activity; dopachrome isomerase activity; chemoattractant activity; receptor binding

Biological Process: DNA damage response, signal transduction by p53 class mediator; regulation of macrophage activation; carboxylic acid metabolic process; positive regulation of lipopolysaccharide-mediated signaling pathway; cell aging; negative regulation of cellular protein metabolic process; prostaglandin biosynthetic process; positive regulation of peptidyl-serine phosphorylation; negative regulation of DNA damage response, signal transduction by p53 class mediator; positive regulation of MAP kinase activity; cell proliferation; positive regulation of peptidyl-tyrosine phosphorylation; positive regulation of fibroblast proliferation; negative regulation of myeloid cell apoptosis; negative regulation of mature B cell apoptosis; cell surface receptor linked signal transduction; positive chemotaxis; positive regulation of B cell proliferation; innate immune response; inflammatory response; positive regulation of phosphorylation; positive regulation of cytokine secretion; negative regulation of apoptosis

Disease: Rheumatoid Arthritis, Systemic Juvenile