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MBD4
methyl-CpG binding domain protein 4
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On chromosome: 3q21-q22
Known also as: MED1;
DNA methylation is the major modification of eukaryotic genomes and plays an essential role in mammalian development. Human proteins MECP2, MBD1, MBD2, MBD3, and MBD4 comprise a family of nuclear proteins related by the presence in each of a methyl-CpG binding domain (MBD). Each of these proteins, with the exception of MBD3, is capable of binding specifically to methylated DNA. MBD4 may function to mediate the biological consequences of the methylation signal. In addition, MBD4 has protein sequence similarity to bacterial DNA repair enzymes and thus may have some function in DNA repair. Further, MBD4 gene mutations are detected in tumors with primary microsatellite-instability (MSI), a form of genomic instability associated with defective DNA mismatch repair, and MBD4 gene meets 4 of 5 criteria of a bona fide MIS target gene. [provided by RefSeq]
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Gene sequence:
Proteins coded by this gene:
References:
Authors
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Title
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Journal
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Hendrich B, Bird A
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Identification and characterization of a family of mammalian methyl-CpG binding proteins.
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Mol Cell Biol
Nov. 1, 1998
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Bellacosa A, Cicchillitti L, Schepis F, Riccio A, Yeung AT, Matsumoto Y, Golemis EA, Genuardi M, Neri G
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MED1, a novel human methyl-CpG-binding endonuclease, interacts with DNA mismatch repair protein MLH1.
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Proc Natl Acad Sci U S A
March 1, 1999
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Sokhansanj BA, Rodrigue GR, Fitch JP, Wilson DM 3rd
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A quantitative model of human DNA base excision repair. I. Mechanistic insights.
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Nucleic Acids Res
April 15, 2002
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Screaton RA, Kiessling S, Sansom OJ, Millar CB, Maddison K, Bird A, Clarke AR, Frisch SM
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Fas-associated death domain protein interacts with methyl-CpG binding domain protein 4: a potential link between genome surveillance and apoptosis.
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Proc Natl Acad Sci U S A
April 1, 2003
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Last modification of this entry: Oct. 6, 2010.
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