DNA methylation, or the addition of methyl groups to cytosine bases in the dinucleotide CpG, is imperative to proper development and regulates gene expression. The methylation pattern involves the enzymatic processes of methylation and demethylation. The demethylation enzyme was recently found to be a mammalian protein, which exhibits demethylase activity associated to a methyl-CpG-binding domain (MBD). The enzyme is able to revert methylated cytosine bases to cytosines within the particular dinucleotide sequence mdCpdG by catalyzing the cleaving of the methyl group as methanol. MeCP2 and MBD1 (PCM1) are first found to repress transcription by binding specifically to methylated DNA. MBD2 and MBD4 (also known as MED1) were later found to colocalize with foci of heavily methylated satellite DNA and believed to mediate the biological functions of the methylation signal. Surprisingly, MBD3 does not bind methylated DNA both in vivo and in vitro. MBD1, MBD2, MBD3, and MBD4 are found to be expressed in somatic tissues, but the expression of MBD1 and MBD2 is reduced or absent in embryonic stem cells, which are known to be deficient in MeCP1 activity. MBD4 have homology to bacterial base excision repair DNA N-glycosylases/lyases. In some microsatellite unstable tumors MBD4 is mutated at an exonic polynucleotide tract.
Target
Methyl-CpG Binding Domain Protein 3 (MBD3)
Research Area
Epigenetics
Clonality
Polyclonal
Reactivity
Human, Mouse
Tested Applications
ELISA, WB, IHC
Host
Rabbit
Recommended dilutions
WB: 1/1000, IHC-P: 1/50 - 1/100. Not tested in IHC-F. Optimal dilutions/concentrations should be determined by the end user.
Conjugation
Unconjugated
Immunogen
KLH-conjugated synthetic peptide between 264-291 amino acids from the C-terminal region of human MBD3.
Isotype
IgG
Form
Liquid
Purification
Purified Rabbit Polyclonal Antibody.
Storage
Aliquot and store at 2-8°C for up to 2 weeks, or at -20°C for long term storage. Avoid repeated freeze/thaw cycles.
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