ATRX
Transcriptional regulator ATRX also known as ATP-dependent helicase ATRX, X-linked helicase II, or X-linked nuclear protein (XNP) is a protein that in humans is encoded by the ATRX gene.[1][2][3]
Function
Transcriptional regulator ATRX contains an ATPase / helicase domain, and thus it belongs to the SWI/SNF family of chromatin remodeling proteins. This protein is found to undergo cell cycle-dependent phosphorylation, which regulates its nuclear matrix and chromatin association, and suggests its involvement in the gene regulation at interphase and chromosomal segregation in mitosis.[3]
Clinical significance
Mutations of the ATRX gene are associated with an X-linked mental retardation (XLMR) syndrome most often accompanied by alpha-thalassemia (ATRX) syndrome. These mutations have been shown to cause diverse changes in the pattern of DNA methylation, which may provide a link between chromatin remodeling, DNA methylation, and gene expression in developmental processes. Multiple alternatively spliced transcript variants encoding distinct isoforms have been reported. Female carriers may demonstrate skewed X chromosome inactivation.[3]
Interactions
ATRX has been shown to interact with EZH2.[4]
See also
References
- ↑ Stayton CL, Dabovic B, Gulisano M, Gecz J, Broccoli V, Giovanazzi S, Bossolasco M, Monaco L, Rastan S, Boncinelli E (April 1995). "Cloning and characterization of a new human Xq13 gene, encoding a putative helicase". Hum Mol Genet 3 (11): 1957–64. doi:10.1093/hmg/3.11.1957. PMID 7874112.
- ↑ Gibbons RJ, Suthers GK, Wilkie AO, Buckle VJ, Higgs DR (November 1992). "X-linked alpha-thalassemia/mental retardation (ATR-X) syndrome: localization to Xq12-q21.31 by X inactivation and linkage analysis". Am J Hum Genet 51 (5): 1136–49. PMC 1682840. PMID 1415255.
- 1 2 3 "Entrez Gene: ATRX alpha thalassemia/mental retardation syndrome X-linked (RAD54 homolog, S. cerevisiae)".
- ↑ Cardoso C, Timsit S, Villard L, Khrestchatisky M, Fontès M, Colleaux L (1998). "Specific interaction between the XNP/ATR-X gene product and the SET domain of the human EZH2 protein". Hum. Mol. Genet. 7 (4): 679–84. doi:10.1093/hmg/7.4.679. PMID 9499421.
Further reading
- Mulley JC, Kerr B, Stevenson R, Lubs H (1992). "Nomenclature guidelines for X-linked mental retardation". Am. J. Med. Genet. 43 (1–2): 383–91. doi:10.1002/ajmg.1320430159. PMID 1605216.
- Tang P, Park DJ, Marshall Graves JA, Harley VR (2005). "ATRX and sex differentiation". Trends Endocrinol. Metab. 15 (7): 339–44. doi:10.1016/j.tem.2004.07.006. PMID 15350606.
- Forget BG (2006). "De novo and acquired forms of alpha thalassemia". Curr. Hematol. Rep. 5 (1): 11–4. PMID 16537041.
- Adès LC, Kerr B, Turner G, Wise G (1992). "Smith-Fineman-Myers syndrome in two brothers". Am. J. Med. Genet. 40 (4): 467–70. doi:10.1002/ajmg.1320400419. PMID 1684092.
- Sutherland GR, Gedeon AK, Haan EA, Woodroffe P, Mulley JC (1988). "Linkage studies with the gene for an X-linked syndrome of mental retardation, microcephaly and spastic diplegia (MRX2)". Am. J. Med. Genet. 30 (1–2): 493–508. doi:10.1002/ajmg.1320300152. PMID 3177467.
- Shapiro MB, Senapathy P (1987). "RNA splice junctions of different classes of eukaryotes: sequence statistics and functional implications in gene expression". Nucleic Acids Res. 15 (17): 7155–74. doi:10.1093/nar/15.17.7155. PMC 306199. PMID 3658675.
- Gibbons RJ, Picketts DJ, Villard L, Higgs DR (1995). "Mutations in a putative global transcriptional regulator cause X-linked mental retardation with alpha-thalassemia (ATR-X syndrome)". Cell 80 (6): 837–45. doi:10.1016/0092-8674(95)90287-2. PMID 7697714.
- Wang LH, Collins A, Lawrence S, Keats BJ, Morton NE (1995). "Integration of gene maps: chromosome X". Genomics 22 (3): 590–604. doi:10.1006/geno.1994.1432. PMID 8001970.
- Gecz J, Pollard H, Consalez G, Villard L, Stayton C, Millasseau P, Khrestchatisky M, Fontes M (1994). "Cloning and expression of the murine homologue of a putative human X-linked nuclear protein gene closely linked to PGK1 in Xq13.3". Hum. Mol. Genet. 3 (1): 39–44. doi:10.1093/hmg/3.1.39. PMID 8162050.
- Villard L, Gecz J, Mattéi JF, Fontés M, Saugier-Veber P, Munnich A, Lyonnet S (1996). "XNP mutation in a large family with Juberg-Marsidi syndrome". Nat. Genet. 12 (4): 359–60. doi:10.1038/ng0496-359. PMID 8630485.
- Bonaldo MF, Lennon G, Soares MB (1997). "Normalization and subtraction: two approaches to facilitate gene discovery". Genome Res. 6 (9): 791–806. doi:10.1101/gr.6.9.791. PMID 8889548.
- Picketts DJ, Higgs DR, Bachoo S, Blake DJ, Quarrell OW, Gibbons RJ (1997). "ATRX encodes a novel member of the SNF2 family of proteins: mutations point to a common mechanism underlying the ATR-X syndrome". Hum. Mol. Genet. 5 (12): 1899–907. doi:10.1093/hmg/5.12.1899. PMID 8968741.
- Villard L, Lacombe D, Fontés M (1997). "A point mutation in the XNP gene, associated with an ATR-X phenotype without alpha-thalassemia". Eur. J. Hum. Genet. 4 (6): 316–20. PMID 9043863.
- Villard L, Lossi AM, Cardoso C, Proud V, Chiaroni P, Colleaux L, Schwartz C, Fontés M (1997). "Determination of the genomic structure of the XNP/ATRX gene encoding a potential zinc finger helicase". Genomics 43 (2): 149–55. doi:10.1006/geno.1997.4793. PMID 9244431.
- Golub EI, Kovalenko OV, Gupta RC, Ward DC, Radding CM (1997). "Interaction of human recombination proteins Rad51 and Rad54". Nucleic Acids Res. 25 (20): 4106–10. doi:10.1093/nar/25.20.4106. PMC 147015. PMID 9321665.
- Gibbons RJ, Bachoo S, Picketts DJ, Aftimos S, Asenbauer B, Bergoffen J, Berry SA, Dahl N, Fryer A, Keppler K, Kurosawa K, Levin ML, Masuno M, Neri G, Pierpont ME, Slaney SF, Higgs DR (1997). "Mutations in transcriptional regulator ATRX establish the functional significance of a PHD-like domain". Nat. Genet. 17 (2): 146–8. doi:10.1038/ng1097-146. PMID 9326931.
- Cardoso C, Timsit S, Villard L, Khrestchatisky M, Fontès M, Colleaux L (1998). "Specific interaction between the XNP/ATR-X gene product and the SET domain of the human EZH2 protein". Hum. Mol. Genet. 7 (4): 679–84. doi:10.1093/hmg/7.4.679. PMID 9499421.
- Bérubé NG, Mangelsdorf M, Jagla M, Vanderluit J, Garrick D, Gibbons RJ, Higgs DR, Slack RS, Picketts DJ (2005). "The chromatin-remodeling protein ATRX is critical for neuronal survival during corticogenesis". J. Clin. Invest. 115 (2): 258–267. doi:10.1172/JCI200522329. PMC 544602. PMID 15668733.
External links
- GeneReviews/NCBI/NIH/UW entry on Alpha-Thalassemia X-Linked Mental Retardation Syndrome; ATRX Syndrome; Alpha Thalassemia/Mental Retardation, X-Linked; XLMR-Hypotonic Face Syndrome
- OMIM entries on Alpha-Thalassemia X-Linked Mental Retardation Syndrome
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