The neutrophil NADPH oxidase

Arch Biochem Biophys. 2002 Jan 15;397(2):342-4. doi: 10.1006/abbi.2001.2642.


The NADPH oxidase of phagocytes catalyzes the conversion of oxygen to O2(-). This multicomponent enzyme complex contains five essential protein components, two in the membrane and three in the cytosol. Unassembled and inactive in resting phagocytes, the oxidase becomes active after translocation of cytosolic components to the membrane to assemble a functional oxidase. Multiple factors regulate its assembly and activity, thus serving to maintain this highly reactive system under spatial and temporal control until recruited for antimicrobial or proinflammatory events. The recent identification of homologs of one of the membrane components in nonphagocytic cells will expand understanding of the biological contexts in which this system may function.

Publication types

  • Review

MeSH terms

  • Cytochrome b Group / metabolism
  • Gene Expression Regulation, Enzymologic
  • NADPH Oxidases / metabolism*
  • Neutrophils / enzymology*
  • Phosphoproteins / metabolism


  • Cytochrome b Group
  • Phosphoproteins
  • neutrophil cytosol factor 67K
  • cytochrome b558
  • NADPH Oxidases
  • neutrophil cytosolic factor 1