Q9NPH5 (NOX4_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 94.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: NADPH oxidase 4 EC=1.6.3.- Alternative name(s): Kidney oxidase-1 Short name=KOX-1 Kidney superoxide-producing NADPH oxidase Renal NAD(P)H-oxidase | ||||
| Gene names |
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| Organism | Homo sapiens (Human) [Reference proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo![]() |
Protein attributes
| Sequence length | 578 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Constitutive NADPH oxidase which generates superoxide intracellularly upon formation of a complex with CYBA/p22phox. Regulates signaling cascades probably through phosphatases inhibition. May function as an oxygen sensor regulating the KCNK3/TASK-1 potassium channel and HIF1A activity. May regulate insulin signaling cascade. May play a role in apoptosis, bone resorption and lipolysaccharide-mediated activation of NFKB. May produce superoxide in the nucleus and play a role in regulating gene expression upon cell stimulation. Isoform 3 is not functional. Isoform 4 displays an increased activity. Isoform 5 and isoform 6 display reduced activity. Ref.3 Ref.5 Ref.9 Ref.10 Ref.11 Ref.12 Ref.13 Ref.14 Ref.15 Ref.16 Ref.17 |
| Enzyme regulation | Inhibited by plumbagin By similarity. Activated by phorbol 12-myristate 13-acetate (PMA). Activated by insulin. Inhibited by diphenylene iodonium. Ref.11 Ref.12 Ref.15 Ref.17 |
| Subunit structure | Interacts with protein disulfide isomerase By similarity. Interacts with, relocalizes and stabilizes CYBA/p22phox. Interacts with TLR4. Ref.10 Ref.16 |
| Subcellular location | Endoplasmic reticulum membrane; Multi-pass membrane protein. Cell membrane; Multi-pass membrane protein Probable. Cell junction › focal adhesion Probable. Nucleus Probable. Note: May localize to plasma membrane and focal adhesions. According to Ref.16, may also localize to the nucleus. Ref.5 Ref.12 Ref.15 Ref.16 Ref.17 |
| Tissue specificity | Expressed by distal tubular cells in kidney cortex and in endothelial cells (at protein level). Widely expressed. Strongly expressed in kidney and to a lower extent in heart, adipocytes, hepatoma, endothelial cells, skeletal muscle, brain, several brain tumor cell lines and airway epithelial cells. Ref.2 Ref.3 Ref.4 Ref.15 |
| Developmental stage | Expressed in fetal kidney and fetal liver. Ref.1 Ref.2 Ref.3 |
| Induction | By 7-ketocholesterol (at protein level). Ref.11 Ref.12 Ref.15 Ref.17 |
| Post-translational modification | Isoform 3 and isoform 4 are N-glycosylated. Isoform 4 glycosylation is required for its proper function. Ref.5 |
| Sequence similarities | Contains 1 FAD-binding FR-type domain. Contains 1 ferric oxidoreductase domain. |
Ontologies
Alternative products
| This entry describes 7 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q9NPH5-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: Q9NPH5-2) Also known as: Nox4A; The sequence of this isoform differs from the canonical sequence as follows: 1-74: Missing. | ||||||
| Isoform 3 (identifier: Q9NPH5-3) Also known as: Nox4E; The sequence of this isoform differs from the canonical sequence as follows: 52-358: Missing. 407-446: Missing. | ||||||
| Isoform 4 (identifier: Q9NPH5-4) Also known as: Nox4D; The sequence of this isoform differs from the canonical sequence as follows: 52-358: Missing. | ||||||
| Isoform 5 (identifier: Q9NPH5-5) Also known as: Nox4C; The sequence of this isoform differs from the canonical sequence as follows: 211-224: GLLKYQTNLDTHPP → VQLKPKQHLGFILK 225-578: Missing. | ||||||
| Isoform 6 (identifier: Q9NPH5-6) Also known as: Nox4B; The sequence of this isoform differs from the canonical sequence as follows: 407-446: Missing. | ||||||
| Isoform 7 (identifier: Q9NPH5-7) The sequence of this isoform differs from the canonical sequence as follows: 52-54: LGL → ELS 55-578: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 578 | 578 | NADPH oxidase 4 | PRO_0000238980 | |||||
Regions | |||||||||
| Topological domain | 1 – 16 | 16 | Cytoplasmic Potential | ||||||
| Transmembrane | 17 – 37 | 21 | Helical; Potential | ||||||
| Topological domain | 38 – 62 | 25 | Extracellular Potential | ||||||
| Transmembrane | 63 – 83 | 21 | Helical; Potential | ||||||
| Topological domain | 84 – 103 | 20 | Cytoplasmic Potential | ||||||
| Transmembrane | 104 – 124 | 21 | Helical; Potential | ||||||
| Topological domain | 125 – 154 | 30 | Extracellular Potential | ||||||
| Transmembrane | 155 – 175 | 21 | Helical; Potential | ||||||
| Topological domain | 176 – 188 | 13 | Cytoplasmic Potential | ||||||
| Transmembrane | 189 – 209 | 21 | Helical; Potential | ||||||
| Topological domain | 210 – 424 | 215 | Extracellular Potential | ||||||
| Transmembrane | 425 – 445 | 21 | Helical; Potential | ||||||
| Topological domain | 446 – 578 | 133 | Cytoplasmic Potential | ||||||
| Domain | 58 – 303 | 246 | Ferric oxidoreductase | ||||||
| Domain | 304 – 419 | 116 | FAD-binding FR-type | ||||||
| Region | 248 – 575 | 328 | Mediates interaction with TLR4 | ||||||
Amino acid modifications | |||||||||
| Glycosylation | 133 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 230 | 1 | N-linked (GlcNAc...) Potential | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 74 | 74 | Missing in isoform 2. | VSP_019052 | |||||
| Alternative sequence | 52 – 358 | 307 | Missing in isoform 3 and isoform 4. | VSP_019053 | |||||
| Alternative sequence | 52 – 54 | 3 | LGL → ELS in isoform 7. | VSP_019054 | |||||
| Alternative sequence | 55 – 578 | 524 | Missing in isoform 7. | VSP_019055 | |||||
| Alternative sequence | 211 – 224 | 14 | GLLKY…DTHPP → VQLKPKQHLGFILK in isoform 5. | VSP_019056 | |||||
| Alternative sequence | 225 – 578 | 354 | Missing in isoform 5. | VSP_019057 | |||||
| Alternative sequence | 407 – 446 | 40 | Missing in isoform 3 and isoform 6. | VSP_019058 | |||||
| Natural variant | 315 | 1 | M → I. Ref.1 Ref.2 Ref.3 Ref.4 Ref.5 Ref.8 Corresponds to variant rs317139 [ dbSNP | Ensembl ]. | VAR_047114 | |||||
Experimental info | |||||||||
| Mutagenesis | 304 | 1 | R → RGT: Partial loss of catalytic activity. No effect on CYBA localization. Ref.16 | ||||||
| Mutagenesis | 575 – 578 | 4 | Missing: Partial loss of catalytic activity. No effect on CYBA localization. Ref.16 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Identification of renox, an NAD(P)H oxidase in kidney." Geiszt M., Kopp J.B., Varnai P., Leto T.L. Proc. Natl. Acad. Sci. U.S.A. 97:8010-8014(2000) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), DEVELOPMENTAL STAGE, VARIANT ILE-315. Tissue: Kidney. |
| [2] | "Homologs of gp91phox: cloning and tissue expression of Nox3, Nox4, and Nox5." Cheng G., Cao Z., Xu X., van Meir E.G., Lambeth J.D. Gene 269:131-140(2001) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), TISSUE SPECIFICITY, DEVELOPMENTAL STAGE, VARIANT ILE-315. Tissue: Fetal kidney. |
| [3] | "A novel superoxide-producing NAD(P)H oxidase in kidney." Shiose A., Kuroda J., Tsuruya K., Hirai M., Hirakata H., Naito S., Hattori M., Sakaki Y., Sumimoto H. J. Biol. Chem. 276:1417-1423(2001) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), FUNCTION, TISSUE SPECIFICITY, DEVELOPMENTAL STAGE, VARIANT ILE-315. Tissue: Kidney. |
| [4] | "NADPH oxidase-dependent acid production in airway epithelial cells." Schwarzer C., Machen T.E., Illek B., Fischer H. J. Biol. Chem. 279:36454-36461(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 6), TISSUE SPECIFICITY, VARIANT ILE-315. |
| [5] | "Identification of novel Nox4 splice variants with impact on ROS levels in A549 cells." Goyal P., Weissmann N., Rose F., Grimminger F., Schaefers H.J., Seeger W., Haenze J. Biochem. Biophys. Res. Commun. 329:32-39(2005) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 2; 3; 4; 5 AND 6), FUNCTION, SUBCELLULAR LOCATION, GLYCOSYLATION, VARIANT ILE-315. Tissue: Lung. |
| [6] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 6). Tissue: Pulmonary artery. |
| [7] | "Human chromosome 11 DNA sequence and analysis including novel gene identification." Taylor T.D., Noguchi H., Totoki Y., Toyoda A., Kuroki Y., Dewar K., Lloyd C., Itoh T., Takeda T., Kim D.-W., She X., Barlow K.F., Bloom T., Bruford E., Chang J.L., Cuomo C.A., Eichler E., FitzGerald M.G. Sakaki Y.Nature 440:497-500(2006) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [8] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 7), VARIANT ILE-315. Tissue: Ovary. |
| [9] | "Reactive oxygen species produced by NAD(P)H oxidase inhibit apoptosis in pancreatic cancer cells." Vaquero E.C., Edderkaoui M., Pandol S.J., Gukovsky I., Gukovskaya A.S. J. Biol. Chem. 279:34643-34654(2004) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [10] | "Direct interaction of TLR4 with NAD(P)H oxidase 4 isozyme is essential for lipopolysaccharide-induced production of reactive oxygen species and activation of NF-kappa B." Park H.S., Jung H.Y., Park E.Y., Kim J., Lee W.J., Bae Y.S. J. Immunol. 173:3589-3593(2004) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, INTERACTION WITH TLR4. |
| [11] | "The NAD(P)H oxidase homolog Nox4 modulates insulin-stimulated generation of H2O2 and plays an integral role in insulin signal transduction." Mahadev K., Motoshima H., Wu X., Ruddy J.M., Arnold R.S., Cheng G., Lambeth J.D., Goldstein B.J. Mol. Cell. Biol. 24:1844-1854(2004) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, ENZYME REGULATION. |
| [12] | "NAD(P)H oxidase Nox-4 mediates 7-ketocholesterol-induced endoplasmic reticulum stress and apoptosis in human aortic smooth muscle cells." Pedruzzi E., Guichard C., Ollivier V., Driss F., Fay M., Prunet C., Marie J.-C., Pouzet C., Samadi M., Elbim C., O'dowd Y., Bens M., Vandewalle A., Gougerot-Pocidalo M.-A., Lizard G., Ogier-Denis E. Mol. Cell. Biol. 24:10703-10717(2004) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, INDUCTION, SUBCELLULAR LOCATION, ENZYME REGULATION. |
| [13] | "Nox4 is critical for hypoxia-inducible factor 2-alpha transcriptional activity in von Hippel-Lindau-deficient renal cell carcinoma." Maranchie J.K., Zhan Y. Cancer Res. 65:9190-9193(2005) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [14] | "NAD(P)H oxidase 4 mediates transforming growth factor-beta1-induced differentiation of cardiac fibroblasts into myofibroblasts." Cucoranu I., Clempus R., Dikalova A., Phelan P.J., Ariyan S., Dikalov S., Sorescu D. Circ. Res. 97:900-907(2005) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [15] | "The superoxide-producing NAD(P)H oxidase Nox4 in the nucleus of human vascular endothelial cells." Kuroda J., Nakagawa K., Yamasaki T., Nakamura K., Takeya R., Kuribayashi F., Imajoh-Ohmi S., Igarashi K., Shibata Y., Sueishi K., Sumimoto H. Genes Cells 10:1139-1151(2005) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, SUBCELLULAR LOCATION, TISSUE SPECIFICITY, ENZYME REGULATION. |
| [16] | "Functional analysis of Nox4 reveals unique characteristics compared to other NADPH oxidases." Martyn K.D., Frederick L.M., von Loehneysen K., Dinauer M.C., Knaus U.G. Cell. Signal. 18:69-82(2006) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, INTERACTION WITH CYBA, SUBCELLULAR LOCATION, MUTAGENESIS OF ARG-304 AND 575-GLU--SER-578. |
| [17] | "NOX4 as an oxygen sensor to regulate TASK-1 activity." Lee Y.-M., Kim B.-J., Chun Y.-S., So I., Choi H., Kim M.-S., Park J.-W. Cell. Signal. 18:499-507(2006) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, SUBCELLULAR LOCATION, ENZYME REGULATION. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AF261943 mRNA. Translation: AAF87572.1. AF254621 mRNA. Translation: AAF68973.1. AB041035 mRNA. Translation: BAA95695.1. AY288918 mRNA. Translation: AAP41109.1. AJ704725 mRNA. Translation: CAG28807.1. AJ704726 mRNA. Translation: CAG28808.1. AJ704727 mRNA. Translation: CAG28809.1. AJ704728 mRNA. Translation: CAG28810.1. AJ704729 mRNA. Translation: CAG28811.1. AK291830 mRNA. Translation: BAF84519.1. AP001815 Genomic DNA. No translation available. AP002404 Genomic DNA. No translation available. BC040105 mRNA. Translation: AAH40105.1. BC051371 mRNA. Translation: AAH51371.1. |
| IPI | IPI00385546. IPI00552918. IPI00553065. IPI00759550. IPI00759558. IPI00978411. IPI01016002. |
| RefSeq | NP_001137308.1. NM_001143836.1. NP_058627.1. NM_016931.3. |
| UniGene | Hs.371036. |
3D structure databases | |
| ProteinModelPortal | Q9NPH5. |
| ModBase | Search... |
Protein-protein interaction databases | |
| STRING | 9606.ENSP00000263317. |
Protein family/group databases | |
| PeroxiBase | 5967. HsNOx04. |
| TCDB | 5.B.1.1.2. phagocyte (gp91phox) NADPH oxidase family. |
PTM databases | |
| PhosphoSite | Q9NPH5. |
Polymorphism databases | |
| DMDM | 212276447. |
Proteomic databases | |
| PaxDb | Q9NPH5. |
| PRIDE | Q9NPH5. |
Protocols and materials databases | |
| DNASU | 50507. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000263317; ENSP00000263317; ENSG00000086991. ENST00000375979; ENSP00000365146; ENSG00000086991. ENST00000393282; ENSP00000376961; ENSG00000086991. ENST00000529343; ENSP00000435474; ENSG00000086991. ENST00000531342; ENSP00000435039; ENSG00000086991. ENST00000534731; ENSP00000436892; ENSG00000086991. |
| GeneID | 50507. |
| KEGG | hsa:50507. |
| UCSC | uc001pcu.3. human. uc001pcv.3. human. uc001pcw.3. human. uc001pcx.3. human. |
Organism-specific databases | |
| CTD | 50507. |
| GeneCards | GC11M089057. |
| HGNC | HGNC:7891. NOX4. |
| HPA | HPA015475. |
| MIM | 605261. gene. |
| neXtProt | NX_Q9NPH5. |
| PharmGKB | PA31692. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG265816. |
| HOVERGEN | HBG003760. |
| InParanoid | Q9NPH5. |
| OrthoDB | EOG4FR0R6. |
| PhylomeDB | Q9NPH5. |
Enzyme and pathway databases | |
| Pathway_Interaction_DB | ptp1bpathway. Signaling events mediated by PTP1B. |
Gene expression databases | |
| ArrayExpress | Q9NPH5. |
| Bgee | Q9NPH5. |
| CleanEx | HS_NOX4. |
| Genevestigator | Q9NPH5. |
| GermOnline | ENSG00000086991. Homo sapiens. |
Family and domain databases | |
| InterPro | IPR000778. Cyt_b245_heavy_chain. IPR013112. FAD-bd_8. IPR017927. Fd_Rdtase_FAD-bd. IPR013130. Fe3_Rdtase_TM_dom. IPR013121. Fe_red_NAD-bd_6. IPR017938. Riboflavin_synthase-like_b-brl. [Graphical view] |
| Pfam | PF08022. FAD_binding_8. 1 hit. PF01794. Ferric_reduct. 1 hit. PF08030. NAD_binding_6. 1 hit. [Graphical view] |
| PRINTS | PR00466. GP91PHOX. |
| SUPFAM | SSF63380. Riboflavin_synthase_like_b-brl. 1 hit. |
| PROSITE | PS51384. FAD_FR. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| BindingDB | Q9NPH5. |
| ChEMBL | CHEMBL1250375. |
| GenomeRNAi | 50507. |
| NextBio | 53070. |
| SOURCE | Search... |
Entry information
| Entry name | NOX4_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q9NPH5 Secondary accession number(s): A8K715 Q86V92 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 11 Human chromosome 11: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
