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HMDB Protein ID HMDBP09205
Secondary Accession Numbers
  • 14987
Name NADPH oxidase organizer 1
  1. NADPH oxidase regulatory protein
  2. Nox organizer 1
  3. Nox-organizing protein 1
  4. SH3 and PX domain-containing protein 5
Gene Name NOXO1
Protein Type Enzyme
Biological Properties
General Function Involved in protein binding
Specific Function Constitutively potentiates the superoxide-generating activity of NOX1 and NOX3 and is required for the biogenesis of otoconia/otolith, which are crystalline structures of the inner ear involved in the perception of gravity. Isoform 3 is more potent than isoform 1 in activating NOX3. Together with NOXA1, may also substitute to NCF1/p47phox and NCF2/p67phox in supporting the phagocyte NOX2/gp91phox superoxide-generating activity
Pathways Not Available
Reactions Not Available
GO Classification
protein binding
lipid binding
phospholipid binding
phosphoinositide binding
cellular process
cell communication
Cellular Location
  1. Peripheral membrane protein
  2. Cytoplasmic side
  3. Isoform 3:Cell membrane
Gene Properties
Chromosome Location Chromosome:1
Locus 16p13.3
Gene Sequence
>1131 bp
Protein Properties
Number of Residues 376
Molecular Weight 41252.3
Theoretical pI 10.23
Pfam Domain Function
  • None
Transmembrane Regions
  • None
Protein Sequence
>NADPH oxidase organizer 1
GenBank ID Protein 41281828
UniProtKB/Swiss-Prot ID Q8NFA2
UniProtKB/Swiss-Prot Entry Name NOXO1_HUMAN
PDB IDs Not Available
GenBank Gene ID NM_172168.1
GeneCard ID NOXO1
GenAtlas ID NOXO1
General References
  1. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [PubMed:15489334 ]
  2. Takeya R, Ueno N, Kami K, Taura M, Kohjima M, Izaki T, Nunoi H, Sumimoto H: Novel human homologues of p47phox and p67phox participate in activation of superoxide-producing NADPH oxidases. J Biol Chem. 2003 Jul 4;278(27):25234-46. Epub 2003 Apr 25. [PubMed:12716910 ]
  3. Ueno N, Takeya R, Miyano K, Kikuchi H, Sumimoto H: The NADPH oxidase Nox3 constitutively produces superoxide in a p22phox-dependent manner: its regulation by oxidase organizers and activators. J Biol Chem. 2005 Jun 17;280(24):23328-39. Epub 2005 Apr 11. [PubMed:15824103 ]
  4. Cheng G, Lambeth JD: NOXO1, regulation of lipid binding, localization, and activation of Nox1 by the Phox homology (PX) domain. J Biol Chem. 2004 Feb 6;279(6):4737-42. Epub 2003 Nov 14. [PubMed:14617635 ]
  5. Park HS, Park D, Bae YS: Molecular interaction of NADPH oxidase 1 with betaPix and Nox Organizer 1. Biochem Biophys Res Commun. 2006 Jan 20;339(3):985-90. [PubMed:16329988 ]
  6. Geiszt M, Lekstrom K, Witta J, Leto TL: Proteins homologous to p47phox and p67phox support superoxide production by NAD(P)H oxidase 1 in colon epithelial cells. J Biol Chem. 2003 May 30;278(22):20006-12. Epub 2003 Mar 25. [PubMed:12657628 ]
  7. Yamamoto A, Kami K, Takeya R, Sumimoto H: Interaction between the SH3 domains and C-terminal proline-rich region in NADPH oxidase organizer 1 (Noxo1). Biochem Biophys Res Commun. 2007 Jan 12;352(2):560-5. Epub 2006 Nov 20. [PubMed:17126813 ]
  8. Banfi B, Clark RA, Steger K, Krause KH: Two novel proteins activate superoxide generation by the NADPH oxidase NOX1. J Biol Chem. 2003 Feb 7;278(6):3510-3. Epub 2002 Dec 6. [PubMed:12473664 ]
  9. Cheng G, Lambeth JD: Alternative mRNA splice forms of NOXO1: differential tissue expression and regulation of Nox1 and Nox3. Gene. 2005 Aug 15;356:118-26. [PubMed:15949904 ]
  10. Banfi B, Malgrange B, Knisz J, Steger K, Dubois-Dauphin M, Krause KH: NOX3, a superoxide-generating NADPH oxidase of the inner ear. J Biol Chem. 2004 Oct 29;279(44):46065-72. Epub 2004 Aug 23. [PubMed:15326186 ]