USP9X

Ubiquitin specific peptidase 9, X-linked
Identifiers
Symbols	USP9X ; DFFRX; FAF; FAM; MRX99
External IDs	OMIM: 300072 MGI: 894681 HomoloGene: 3418 GeneCards: USP9X Gene
EC number	3.4.19.12
Gene ontology Molecular function • cysteine-type endopeptidase activity • ubiquitin-specific protease activity • protein binding • cysteine-type peptidase activity • co-SMAD binding Cellular component • cytoplasm • cytosol • membrane • growth cone • apical part of cell Biological process • negative regulation of transcription from RNA polymerase II promoter • in utero embryonic development • neuron migration • transcription, DNA-templated • transcription initiation from RNA polymerase II promoter • chromosome segregation • mitotic nuclear division • transforming growth factor beta receptor signaling pathway • female gamete generation • post-embryonic development • gene expression • protein deubiquitination • cerebellar cortex structural organization • hippocampus development • BMP signaling pathway • proteasome-mediated ubiquitin-dependent protein catabolic process • axon extension • cell division • regulation of proteasomal protein catabolic process Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	8239	22284
Ensembl	ENSG00000124486	ENSMUSG00000031010
UniProt	Q93008	P70398
RefSeq (mRNA)	NM_001039590	NM_009481
RefSeq (protein)	NP_001034679	NP_033507
Location (UCSC)	Chr X: 41.09 – 41.24 Mb	Chr X: 13.07 – 13.17 Mb
PubMed search

Probable ubiquitin carboxyl-terminal hydrolase FAF-X is an enzyme that in humans is encoded by the USP9X gene.^[1][2]

Function

This gene is a member of the peptidase C19 family and encodes a protein that is similar to ubiquitin-specific proteases. Though this gene is located on the X chromosome, it escapes X-inactivation.

Depletion of USP9X from two-cell mouse embryos halts blastocyst development and results in slower blastomere cleavage rate, impaired cell adhesion and a loss of cell polarity. It has also been implicated that USP9X is likely to influence developmental processes through signaling pathways of Notch, Wnt, EGF, and mTOR. USP9X has been recognized in studies of mouse and human stem cells involving embryonic, neural and hematopoietic stem cells. ^[3] High expression is retained in undifferentiated progenitor and stem cells and decreases as differentiation continues. USP9X is a protein-coding gene that has been implicated either directly through mutations or indirectly in a number of neurodevelopmental and neurodegenerative disorders. Three mutations have been connected with X-linked intellectual disability and disrupt neuronal growth and cell migration. Neurodegenerative disorders, such as Alzheimer’s, Parkinson’s and Huntington’s disease, have also been linked to USP9X. Scientists have generated a knockout model where they isolated hippocampal neurons from an USP9X-knockout male mouse, which showed a 43% reduction in axonal length and aborization compared to wildtype. ^[4]

Interactions

USP9X has been shown to interact with:

• Beta-catenin,^[5]
• MARK4,^[6]
• MLLT4,^[5][7] and
• NUAK1.^[6]

References

1. Jones MH, Furlong RA, Burkin H, Chalmers IJ, Brown GM, Khwaja O, Affara NA (Mar 1997). "The Drosophila developmental gene fat facets has a human homologue in Xp11.4 which escapes X-inactivation and has related sequences on Yq11.2". Hum. Mol. Genet. 5 (11): 1695–701. doi:10.1093/hmg/5.11.1695. PMID 8922996. Check date values in: |year= / |date= mismatch (help)
2. "Entrez Gene: USP9X ubiquitin specific peptidase 9, X-linked".
3. Murtaza, Mariyam; Jolly, Lachlan A.; Gecz, Jozef; Wood, Stephen A. (2015-01-01). "La FAM fatale: USP9X in development and disease". Cellular and Molecular Life Sciences 72 (11): 2075–2089. doi:10.1007/s00018-015-1851-0. ISSN 1420-682X. PMC 4427618. PMID 25672900.
4. "OMIM Entry - * 300072 - UBIQUITIN-SPECIFIC PROTEASE 9, X-LINKED; USP9X". www.omim.org. Retrieved 2016-04-12.
5. Taya S, Yamamoto T, Kanai-Azuma M, Wood SA, Kaibuchi K (Dec 1999). "The deubiquitinating enzyme Fam interacts with and stabilizes beta-catenin". Genes Cells 4 (12): 757–67. doi:10.1046/j.1365-2443.1999.00297.x. PMID 10620020.
6. Al-Hakim AK, Zagorska A, Chapman L, Deak M, Peggie M, Alessi DR (Apr 2008). "Control of AMPK-related kinases by USP9X and atypical Lys(29)/Lys(33)-linked polyubiquitin chains". Biochem. J. 411 (2): 249–60. doi:10.1042/BJ20080067. PMID 18254724.
7. Taya S, Yamamoto T, Kano K, Kawano Y, Iwamatsu A, Tsuchiya T, Tanaka K, Kanai-Azuma M, Wood SA, Mattick JS, Kaibuchi K (Aug 1998). "The Ras target AF-6 is a substrate of the fam deubiquitinating enzyme". J. Cell Biol. 142 (4): 1053–62. doi:10.1083/jcb.142.4.1053. PMC 2132865. PMID 9722616.

Further reading

• D'Andrea A, Pellman D (1998). "Deubiquitinating enzymes: a new class of biological regulators". Crit. Rev. Biochem. Mol. Biol. 33 (5): 337–52. doi:10.1080/10409239891204251. PMID 9827704.
• Andersson B, Wentland MA, Ricafrente JY, Liu W, Gibbs RA (1996). "A "double adaptor" method for improved shotgun library construction". Anal. Biochem. 236 (1): 107–13. doi:10.1006/abio.1996.0138. PMID 8619474.
• Yu W, Andersson B, Worley KC, Muzny DM, Ding Y, Liu W, Ricafrente JY, Wentland MA, Lennon G, Gibbs RA (1997). "Large-scale concatenation cDNA sequencing". Genome Res. 7 (4): 353–8. doi:10.1101/gr.7.4.353. PMC 139146. PMID 9110174.
• Taya S, Yamamoto T, Kano K, Kawano Y, Iwamatsu A, Tsuchiya T, Tanaka K, Kanai-Azuma M, Wood SA, Mattick JS, Kaibuchi K (1998). "The Ras target AF-6 is a substrate of the fam deubiquitinating enzyme". J. Cell Biol. 142 (4): 1053–62. doi:10.1083/jcb.142.4.1053. PMC 2132865. PMID 9722616.
• Taya S, Yamamoto T, Kanai-Azuma M, Wood SA, Kaibuchi K (1999). "The deubiquitinating enzyme Fam interacts with and stabilizes beta-catenin". Genes Cells 4 (12): 757–67. doi:10.1046/j.1365-2443.1999.00297.x. PMID 10620020.
• Dias Neto E, Correa RG, Verjovski-Almeida S, Briones MR, Nagai MA, da Silva W, Zago MA, Bordin S, Costa FF, Goldman GH, Carvalho AF, Matsukuma A, Baia GS, Simpson DH, Brunstein A, de Oliveira PS, Bucher P, Jongeneel CV, O'Hare MJ, Soares F, Brentani RR, Reis LF, de Souza SJ, Simpson AJ (2000). "Shotgun sequencing of the human transcriptome with ORF expressed sequence tags". Proc. Natl. Acad. Sci. U.S.A. 97 (7): 3491–6. doi:10.1073/pnas.97.7.3491. PMC 16267. PMID 10737800.
• Noma T, Kanai Y, Kanai-Azuma M, Ishii M, Fujisawa M, Kurohmaru M, Kawakami H, Wood SA, Hayashi Y (2002). "Stage- and sex-dependent expressions of Usp9x, an X-linked mouse ortholog of Drosophila Fat facets, during gonadal development and oogenesis in mice". Gene Expr. Patterns 2 (1-2): 87–91. doi:10.1016/S0925-4773(02)00290-3. PMID 12617843.
• Murray RZ, Jolly LA, Wood SA (2004). "The FAM deubiquitylating enzyme localizes to multiple points of protein trafficking in epithelia, where it associates with E-cadherin and beta-catenin". Mol. Biol. Cell 15 (4): 1591–9. doi:10.1091/mbc.E03-08-0630. PMC 379258. PMID 14742711.
• Bouwmeester T, Bauch A, Ruffner H, Angrand PO, Bergamini G, Croughton K, Cruciat C, Eberhard D, Gagneur J, Ghidelli S, Hopf C, Huhse B, Mangano R, Michon AM, Schirle M, Schlegl J, Schwab M, Stein MA, Bauer A, Casari G, Drewes G, Gavin AC, Jackson DB, Joberty G, Neubauer G, Rick J, Kuster B, Superti-Furga G (2004). "A physical and functional map of the human TNF-alpha/NF-kappa B signal transduction pathway". Nat. Cell Biol. 6 (2): 97–105. doi:10.1038/ncb1086. PMID 14743216.
• Fu GK, Wang JT, Yang J, Au-Young J, Stuve LL (2004). "Circular rapid amplification of cDNA ends for high-throughput extension cloning of partial genes". Genomics 84 (1): 205–10. doi:10.1016/j.ygeno.2004.01.011. PMID 15203218.
• Rush J, Moritz A, Lee KA, Guo A, Goss VL, Spek EJ, Zhang H, Zha XM, Polakiewicz RD, Comb MJ (2005). "Immunoaffinity profiling of tyrosine phosphorylation in cancer cells". Nat. Biotechnol. 23 (1): 94–101. doi:10.1038/nbt1046. PMID 15592455.
• Al-Hakim AK, Göransson O, Deak M, Toth R, Campbell DG, Morrice NA, Prescott AR, Alessi DR (2005). "14-3-3 cooperates with LKB1 to regulate the activity and localization of QSK and SIK". J. Cell. Sci. 118 (Pt 23): 5661–73. doi:10.1242/jcs.02670. PMID 16306228.
• 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 (2006). "Diversification of transcriptional modulation: large-scale identification and characterization of putative alternative promoters of human genes". Genome Res. 16 (1): 55–65. doi:10.1101/gr.4039406. PMC 1356129. PMID 16344560.
• Beausoleil SA, Villén J, Gerber SA, Rush J, Gygi SP (2006). "A probability-based approach for high-throughput protein phosphorylation analysis and site localization". Nat. Biotechnol. 24 (10): 1285–92. doi:10.1038/nbt1240. PMID 16964243.
• Mouchantaf R, Azakir BA, McPherson PS, Millard SM, Wood SA, Angers A (2006). "The ubiquitin ligase itch is auto-ubiquitylated in vivo and in vitro but is protected from degradation by interacting with the deubiquitylating enzyme FAM/USP9X". J. Biol. Chem. 281 (50): 38738–47. doi:10.1074/jbc.M605959200. PMID 17038327.
• Olsen JV, Blagoev B, Gnad F, Macek B, Kumar C, Mortensen P, Mann M (2006). "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks". Cell 127 (3): 635–48. doi:10.1016/j.cell.2006.09.026. PMID 17081983.