6c1a

Structural highlights

Function

MBD2_HUMAN Binds CpG islands in promoters where the DNA is methylated at position 5 of cytosine within CpG dinucleotides. Binds hemimethylated DNA as well. Recruits histone deacetylases and DNA methyltransferases. Acts as transcriptional repressor and plays a role in gene silencing. Functions as a scaffold protein, targeting GATAD2A and GATAD2B to chromatin to promote repression. May enhance the activation of some unmethylated cAMP-responsive promoters.^{[1] [2] [3] [4] [5] [6]}

See Also

• Methyl CpG binding protein 3D structures

References

1. ↑ Ng HH, Zhang Y, Hendrich B, Johnson CA, Turner BM, Erdjument-Bromage H, Tempst P, Reinberg D, Bird A. MBD2 is a transcriptional repressor belonging to the MeCP1 histone deacetylase complex. Nat Genet. 1999 Sep;23(1):58-61. PMID:10471499 doi:http://dx.doi.org/10.1038/12659
2. ↑ Tatematsu KI, Yamazaki T, Ishikawa F. MBD2-MBD3 complex binds to hemi-methylated DNA and forms a complex containing DNMT1 at the replication foci in late S phase. Genes Cells. 2000 Aug;5(8):677-88. PMID:10947852
3. ↑ Fujita H, Fujii R, Aratani S, Amano T, Fukamizu A, Nakajima T. Antithetic effects of MBD2a on gene regulation. Mol Cell Biol. 2003 Apr;23(8):2645-57. PMID:12665568
4. ↑ Brackertz M, Gong Z, Leers J, Renkawitz R. p66alpha and p66beta of the Mi-2/NuRD complex mediate MBD2 and histone interaction. Nucleic Acids Res. 2006 Jan 13;34(2):397-406. Print 2006. PMID:16415179 doi:http://dx.doi.org/10.1093/nar/gkj437
5. ↑ Cramer JM, Scarsdale JN, Walavalkar NM, Buchwald WA, Ginder GD, Williams DC Jr. Probing the Dynamic Distribution of Bound States for Methyl-cytosine Binding Domains on DNA. J Biol Chem. 2013 Dec 4. PMID:24307175 doi:http://dx.doi.org/10.1074/jbc.M113.512236
6. ↑ Hendrich B, Bird A. Identification and characterization of a family of mammalian methyl-CpG binding proteins. Mol Cell Biol. 1998 Nov;18(11):6538-47. PMID:9774669