{{Short description|Protein-coding gene in the species Homo sapiens}} {{cs1 config|name-list-style=vanc}} {{Infobox_gene}} '''F-box only protein 4''' is a protein that in humans is encoded by the ''FBXO4'' gene.<ref name="pmid10531035">{{cite journal | vauthors = Cenciarelli C, Chiaur DS, Guardavaccaro D, Parks W, Vidal M, Pagano M | title = Identification of a family of human F-box proteins | journal = Curr Biol | volume = 9 | issue = 20 | pages = 1177–9 | date = Dec 1999 | pmid = 10531035 | doi = 10.1016/S0960-9822(00)80020-2 | s2cid = 7467493 | doi-access = free | bibcode = 1999CBio....9.1177C }}</ref><ref name="pmid10531037">{{cite journal | vauthors = Winston JT, Koepp DM, Zhu C, Elledge SJ, Harper JW | title = A family of mammalian F-box proteins | journal = Curr Biol | volume = 9 | issue = 20 | pages = 1180–2 | date = Dec 1999 | pmid = 10531037 | doi = 10.1016/S0960-9822(00)80021-4 | s2cid = 14341845 | doi-access = free | bibcode = 1999CBio....9.1180W }}</ref><ref name="entrez">{{cite web | title = Entrez Gene: FBXO4 F-box protein 4| url = https://www.ncbi.nlm.nih.gov/gene?Db=gene&Cmd=ShowDetailView&TermToSearch=26272}}</ref>

== Function ==

This gene encodes a member of the F-box protein family which is characterized by an approximately 40 amino acid motif, the F-box. The F-box proteins constitute one of the four subunits of the ubiquitin ligase complex called SCFs (SKP1-cullin-F-box), which function in phosphorylation-dependent ubiquitination. The F-box proteins are divided into 3 classes: Fbws containing WD-40 domains, Fbls containing leucine-rich repeats, and Fbxs containing either different protein-protein interaction modules or no recognizable motifs. The protein encoded by this gene belongs to the Fbxs class. Alternative splicing of this gene generates 2 transcript variants.<ref name="entrez" />

== Interactions ==

FBXO4 has been shown to interact with: * CUL1,<ref name = pmid10531035/><ref name = pmid17353931/> and * SKP1A.<ref name = pmid17353931>{{cite journal | vauthors = Ewing RM, Chu P, Elisma F, Li H, Taylor P, Climie S, McBroom-Cerajewski L, Robinson MD, O'Connor L, Li M, Taylor R, Dharsee M, Ho Y, Heilbut A, Moore L, Zhang S, Ornatsky O, Bukhman YV, Ethier M, Sheng Y, Vasilescu J, Abu-Farha M, Lambert JP, Duewel HS, Stewart II, Kuehl B, Hogue K, Colwill K, Gladwish K, Muskat B, Kinach R, Adams SL, Moran MF, Morin GB, Topaloglou T, Figeys D | title = Large-scale mapping of human protein-protein interactions by mass spectrometry | journal = Mol. Syst. Biol. | year = 2007 | volume = 3 | pages = 89 | pmid = 17353931 | pmc = 1847948 | doi = 10.1038/msb4100134 }}</ref><ref name = autogenerated1>{{cite journal | vauthors = Cenciarelli C, Chiaur DS, Guardavaccaro D, Parks W, Vidal M, Pagano M | title = Identification of a family of human F-box proteins | journal = Curr. Biol. | volume = 9 | issue = 20 | pages = 1177–9 | date = Oct 1999 | pmid = 10531035 | doi = 10.1016/S0960-9822(00)80020-2 | s2cid = 7467493 | doi-access = free | bibcode = 1999CBio....9.1177C }}</ref>

== References == {{reflist}}

== Further reading == {{refbegin | 2}} * {{cite journal | vauthors = Chiaur DS, Murthy S, Cenciarelli C, Parks W, Loda M, Inghirami G, Demetrick D, Pagano M | title = Five human genes encoding F-box proteins: chromosome mapping and analysis in human tumors | journal = Cytogenet. Cell Genet. | volume = 88 | issue = 3–4 | pages = 255–8 | year = 2000 | pmid = 10828603 | doi = 10.1159/000015532 | s2cid = 431704 }} * {{cite journal | vauthors = Beausoleil SA, Jedrychowski M, Schwartz D, Elias JE, Villén J, Li J, Cohn MA, Cantley LC, Gygi SP | title = Large-scale characterization of HeLa cell nuclear phosphoproteins | journal = Proc. Natl. Acad. Sci. U.S.A. | volume = 101 | issue = 33 | pages = 12130–5 | year = 2004 | pmid = 15302935 | pmc = 514446 | doi = 10.1073/pnas.0404720101 | bibcode = 2004PNAS..10112130B | doi-access = free }} * {{cite journal | vauthors = Jin J, Cardozo T, Lovering RC, Elledge SJ, Pagano M, Harper JW | title = Systematic analysis and nomenclature of mammalian F-box proteins | journal = Genes Dev. | volume = 18 | issue = 21 | pages = 2573–80 | year = 2005 | pmid = 15520277 | pmc = 525538 | doi = 10.1101/gad.1255304 }} * {{cite journal | vauthors = Lee TH, Perrem K, Harper JW, Lu KP, Zhou XZ | title = The F-box protein FBX4 targets PIN2/TRF1 for ubiquitin-mediated degradation and regulates telomere maintenance | journal = J. Biol. Chem. | volume = 281 | issue = 2 | pages = 759–68 | year = 2006 | pmid = 16275645 | doi = 10.1074/jbc.M509855200 | doi-access = free }} * {{cite journal | vauthors = Kimura K, Wakamatsu A, Suzuki Y, Ota T, Nishikawa T, Yamashita R, Yamamoto J, Sekine M, Tsuritani K, Wakaguri H, Ishii S, Sugiyama T, Saito K, Isono Y, Irie R, Kushida N, Yoneyama T, Otsuka R, Kanda K, Yokoi T, Kondo H, Wagatsuma M, Murakawa K, Ishida S, Ishibashi T, Takahashi-Fujii A, Tanase T, Nagai K, Kikuchi H, Nakai K, Isogai T, Sugano S | title = Diversification of transcriptional modulation: Large-scale identification and characterization of putative alternative promoters of human genes | journal = Genome Res. | volume = 16 | issue = 1 | pages = 55–65 | year = 2006 | pmid = 16344560 | pmc = 1356129 | doi = 10.1101/gr.4039406 }} * {{cite journal | vauthors = Liu Y, Hedvat CV, Mao S, Zhu XH, Yao J, Nguyen H, Koff A, Nimer SD | title = The ETS Protein MEF Is Regulated by Phosphorylation-Dependent Proteolysis via the Protein-Ubiquitin Ligase SCFSkp2 | journal = Mol. Cell. Biol. | volume = 26 | issue = 8 | pages = 3114–23 | year = 2006 | pmid = 16581786 | pmc = 1446966 | doi = 10.1128/MCB.26.8.3114-3123.2006 }} * {{cite journal | vauthors = Lin DI, Barbash O, Kumar KG, Weber JD, Harper JW, Klein-Szanto AJ, Rustgi A, Fuchs SY, Diehl JA | title = Phosphorylation-dependent ubiquitination of cyclin D1 by the SCFFBX4-αBcrystallin complex | journal = Mol. Cell | volume = 24 | issue = 3 | pages = 355–66 | year = 2006 | pmid = 17081987 | pmc = 1702390 | doi = 10.1016/j.molcel.2006.09.007 }} * {{cite journal | vauthors = Ewing RM, Chu P, Elisma F, Li H, Taylor P, Climie S, McBroom-Cerajewski L, Robinson MD, O'Connor L, Li M, Taylor R, Dharsee M, Ho Y, Heilbut A, Moore L, Zhang S, Ornatsky O, Bukhman YV, Ethier M, Sheng Y, Vasilescu J, Abu-Farha M, Lambert JP, Duewel HS, Stewart II, Kuehl B, Hogue K, Colwill K, Gladwish K, Muskat B, Kinach R, Adams SL, Moran MF, Morin GB, Topaloglou T, Figeys D | title = Large-scale mapping of human protein–protein interactions by mass spectrometry | journal = Mol. Syst. Biol. | volume = 3 | issue = 1 | pages = 89 | year = 2007 | pmid = 17353931 | pmc = 1847948 | doi = 10.1038/msb4100134 }} {{refend}}

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