ADA: a enzyme that converts adenosine + H2O into inosine + NH3. Found in all tissues, occurs in large amounts in T-lymphocytes and, at the time of weaning, in gastrointestinal tissues. Genetic ADA deficiencies are a cause of autosomal recessive severe combined immuno-deficiency (SCID). Hereditary hemolytic anemia is caused by expression levels in erythrocytes 50-70 times greater than the norm.
Protein type: EC 3.5.4.4; Hydrolase; Nucleotide Metabolism - purine
Chromosomal Location of Human Ortholog: 3q42
Cellular Component: cell junction; cell soma; cell surface; cytoplasm; cytosol; dendrite cytoplasm; external side of plasma membrane; extracellular space; lysosome; membrane
Molecular Function: adenosine deaminase activity; purine nucleoside binding; zinc ion binding
Biological Process: adenosine catabolic process; adenosine metabolic process; aging; alveolus development; cell adhesion; dATP catabolic process; deoxyadenosine catabolic process; embryonic gut development; germinal center B cell differentiation; histamine secretion; hypoxanthine biosynthetic process; hypoxanthine salvage; in utero embryonic development; inosine biosynthetic process; liver development; lung development; negative regulation of adenosine receptor signaling pathway; negative regulation of apoptosis; negative regulation of circadian sleep/wake cycle, non-REM sleep; negative regulation of inflammatory response; negative regulation of leukocyte migration; negative regulation of mature B cell apoptosis; Peyer's patch development; placenta development; positive regulation of alpha-beta T cell differentiation; positive regulation of B cell proliferation; positive regulation of calcium-mediated signaling; positive regulation of germinal center formation; positive regulation of heart rate; positive regulation of smooth muscle contraction; positive regulation of T cell activation; positive regulation of T cell differentiation; positive regulation of T cell differentiation in thymus; positive regulation of T cell receptor signaling pathway; purine nucleotide salvage; purine ribonucleoside monophosphate biosynthetic process; regulation of cell-cell adhesion mediated by integrin; regulation of circadian sleep/wake cycle, sleep; regulation of T cell differentiation; response to drug; response to hydrogen peroxide; response to hypoxia; response to morphine; response to vitamin E; T cell activation; trophectodermal cell differentiation; xanthine biosynthetic process
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