FBXO5

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An Error has occurred retrieving Wikidata item for infobox F-box only protein 5 is a protein that in humans is encoded by the FBXO5 gene.[1][2][3]

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 protein 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. This protein is similar to xenopus early mitotic inhibitor-1 (Emi1), which is a mitotic regulator that interacts with Cdc20 and inhibits the anaphase promoting complex.[3] Moreover, Emi1 also assembles a CRL1 complex that targets RAD51 for ubiquitin-mediated degradation.[4]

Disease

Gene and protein expression of FBXO5/Emi1 are increased in many human cancers and increased expression has been shown to cause chromosome instability and cancer.[5]

Interactions

FBXO5 has been shown to interact with:

References

  1. ^ Cenciarelli C, Chiaur DS, Guardavaccaro D, Parks W, Vidal M, Pagano M (October 1999). "Identification of a family of human F-box proteins". Current Biology. 9 (20): 1177–9. doi:10.1016/S0960-9822(00)80020-2. PMID 10531035. S2CID 7467493.
  2. ^ Winston JT, Koepp DM, Zhu C, Elledge SJ, Harper JW (October 1999). "A family of mammalian F-box proteins". Current Biology. 9 (20): 1180–2. doi:10.1016/S0960-9822(00)80021-4. PMID 10531037. S2CID 14341845.
  3. ^ a b "Entrez Gene: FBXO5 F-box protein 5".
  4. ^ a b Marzio A, Puccini J, Kwon Y, Maverakis NK, Arbini A, Sung P, et al. (January 2019). "The F-Box Domain-Dependent Activity of EMI1 Regulates PARPi Sensitivity in Triple-Negative Breast Cancers". Molecular Cell. 73 (2): 224–237.e6. doi:10.1016/j.molcel.2018.11.003. PMC 6995265. PMID 30554948.
  5. ^ Vaidyanathan S, Cato K, Tang L, Pavey S, Haass NK, Gabrielli BG, Duijf PH (October 2016). "In vivo overexpression of Emi1 promotes chromosome instability and tumorigenesis". Oncogene. 35 (41): 5446–5455. doi:10.1038/onc.2016.94. PMID 27065322. S2CID 13540659.
  6. ^ a b Hsu JY, Reimann JD, Sørensen CS, Lukas J, Jackson PK (May 2002). "E2F-dependent accumulation of hEmi1 regulates S phase entry by inhibiting APC(Cdh1)". Nature Cell Biology. 4 (5): 358–66. doi:10.1038/ncb785. PMID 11988738. S2CID 25403043.
  7. ^ Cenciarelli C, Chiaur DS, Guardavaccaro D, Parks W, Vidal M, Pagano M (October 1999). "Identification of a family of human F-box proteins". Current Biology. 9 (20): 1177–9. doi:10.1016/S0960-9822(00)80020-2. PMID 10531035. S2CID 7467493.

Further reading