ASXL transcriptional regulator 1
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A ASXL1 gene provides instructions for making a protein that is involved in a process known as chromatin remodeling. Chromatin is the complex of DNA and proteins that packages DNA into chromosomes. The structure of chromatin can be changed (remodeled) to alter how tightly DNA is packaged. When DNA is tightly packed, gene activity (expression) is lower than when DNA is loosely packed.
Normal function
A ASXL1 gene provides instructions for making a protein that is involved in a process known as chromatin remodeling. Chromatin is the complex of DNA and proteins that packages DNA into chromosomes. The structure of chromatin can be changed (remodeled) to alter how tightly DNA is packaged. When DNA is tightly packed, gene activity (expression) is lower than when DNA is loosely packed.
Through its role in chromatin remodeling, the ASXL1 protein regulates the expression of many genes, including a group of genes known as HOX genes, which play important roles in development before birth. The ASXL1 protein can turn on (activate) or turn off (repress) HOX genes depending on when they are needed.
The ASXL1 protein may have an additional role in gene regulation by signaling to molecules to add a methyl group (a process called methylation) to an area near a gene called the promoter region, which controls gene activity. When a promoter region is methylated, gene activity is repressed, and when a promoter region is not methylated, the gene is active.
Conditions referring to this gene or chromosome
Other names
additional sex combs like 1
additional sex combs like 1, transcriptional regulator
additional sex combs like transcriptional regulator 1
KIAA0978
putative Polycomb group protein ASXL1 isoform 1
putative Polycomb group protein ASXL1 isoform 2
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Leitura adicional e referências
- ASXL transcriptional regulator 1; MedlinePlus, National Library of Medicine.
- Aravind L, Iyer LM. The HARE-HTH and associated domains: novel modules in the coordination of epigenetic DNA and protein modifications. Cell Cycle. 2012 Jan 1;11(1):119-31. doi: 10.4161/cc.11.1.18475. Epub 2012 Jan 1.
- Bohring A, Oudesluijs GG, Grange DK, Zampino G, Thierry P. New cases of Bohring-Opitz syndrome, update, and critical review of the literature. Am J Med Genet A. 2006 Jun 15;140(12):1257-63. doi: 10.1002/ajmg.a.31265.
- Hoischen A, van Bon BW, Rodriguez-Santiago B, Gilissen C, Vissers LE, de Vries P, Janssen I, van Lier B, Hastings R, Smithson SF, Newbury-Ecob R, Kjaergaard S, Goodship J, McGowan R, Bartholdi D, Rauch A, Peippo M, Cobben JM, Wieczorek D, Gillessen-Kaesbach G, Veltman JA, Brunner HG, de Vries BB. De novo nonsense mutations in ASXL1 cause Bohring-Opitz syndrome. Nat Genet. 2011 Jun 26;43(8):729-31. doi: 10.1038/ng.868.
- Inoue D, Matsumoto M, Nagase R, Saika M, Fujino T, Nakayama KI, Kitamura T. Truncation mutants of ASXL1 observed in myeloid malignancies are expressed at detectable protein levels. Exp Hematol. 2016 Mar;44(3):172-6.e1. doi: 10.1016/j.exphem.2015.11.011. Epub 2015 Dec 15.
- Magini P, Della Monica M, Uzielli ML, Mongelli P, Scarselli G, Gambineri E, Scarano G, Seri M. Two novel patients with Bohring-Opitz syndrome caused by de novo ASXL1 mutations. Am J Med Genet A. 2012 Apr;158A(4):917-21. doi: 10.1002/ajmg.a.35265. Epub 2012 Mar 14.
- Russell B, Johnston JJ, Biesecker LG, Kramer N, Pickart A, Rhead W, Tan WH, Brownstein CA, Kate Clarkson L, Dobson A, Rosenberg AZ, Vergano SA, Helm BM, Harrison RE, Graham JM Jr. Clinical management of patients with ASXL1 mutations and Bohring-Opitz syndrome, emphasizing the need for Wilms tumor surveillance. Am J Med Genet A. 2015 Sep;167A(9):2122-31. doi: 10.1002/ajmg.a.37131. Epub 2015 Apr 29.
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