Cloning of a 67-kD neutrophil oxidase factor with similarity to a noncatalytic region of p60c-src

Autor: Hiroyuki Nunoi, Karen J. Lomax, William M. Nauseef, Joan M.G. Sechler, John I. Gallin, Robert A. Clark, Bryan D. Volpp, Harry L. Malech, Thomas L. Leto
Rok vydání: 1990
Předmět:
Zdroj: Science (New York, N.Y.). 248(4956)
ISSN: 0036-8075
Popis: Chronic granulomatous diseases (CGDs) are characterized by recurrent infections resulting from impaired superoxide production by a phagocytic cell, nicotinamide adenine dinucleotide phosphate (reduced) (NADPH) oxidase. Complementary DNAs were cloned that encode the 67-kilodalton (kD) cytosolic oxidase factor (p67), which is deficient in 5% of CGD patients. Recombinant p67 (r-p67) partially restored NADPH oxidase activity to p67-deficient neutrophil cytosol from these patients. The p67 cDNA encodes a 526-amino acid protein with acidic middle and carboxyl-terminal domains that are similar to a sequence motif found in the noncatalytic domain of src-related tyrosine kinases. This motif was recently noted in phospholipase C-gamma, nonerythroid alpha-spectrin (fodrin), p21ras-guanosine triphophatase-activating protein (GAP), myosin-1 isoforms, yeast proteins cdc-25 and fus-1, and the 47-kD phagocyte oxidase factor (p47), which suggests the possibility of common regulatory features.
Databáze: OpenAIRE