>gi|91077136|ref|XP_971386.1| PREDICTED: similar to rCG37751 [Tribolium castaneum] gi|270001717|gb|EEZ98164.1| hypothetical protein TcasGA2_TC000591 [Tribolium castaneum]
Methyl-CpG binding domain, also known as the TAM (TTF-IIP5, ARBP, MeCP1) domain
>cd01397 HAT_MBD Methyl-CpG binding domains (MBD) present in putative chromatin remodelling factor such as BAZ2A; BAZ2A contains a MBD, DDT, PHD-type zinc finger and Bromo domain suggesting that BAZ2A might be associated with histone acetyltransferase (HAT) activity
The Drosophila melanogaster toutatis protein, a putative subunit of the chromatin-remodeling complex, and other such proteins in this group share a similar domain architecture with BAZ2A, as does the Caenorhabditis elegans flectin homolog.
>PF01429 MBD: Methyl-CpG binding domain; InterPro: IPR001739 Methylation at CpG dinucleotide, the most common DNA modification in eukaryotes, has been correlated with gene silencing associated with various phenomena such as genomic imprinting, transposon and chromosome X inactivation, differentiation, and cancer
Effects of DNA methylation are mediated through proteins which bind to symmetrically methylated CpGs. Such proteins contain a specific domain of ~70 residues, the methyl-CpG-binding domain (MBD), which is linked to additional domains associated with chromatin, such as the bromodomain, the AT hook motif,the SET domain, or the PHD finger. MBD-containing proteins appear to act as structural proteins, which recruit a variety of histone deacetylase (HDAC) complexes and chromatin remodelling factors, leading to chromatin compaction and, consequently, to transcriptional repression. The MBD of MeCP2, MBD1, MBD2, MBD4 and BAZ2 mediates binding to DNA, in case of MeCP2, MBD1 and MBD2 preferentially to methylated CpG. In case of human MBD3 and SETDB1 the MBD has been shown to mediate protein-protein interactions [, ]. The MBD folds into an alpha/beta sandwich structure comprising a layer of twisted beta sheet, backed by another layer formed by the alpha1 helix and a hairpin loop at the C terminus. These layers are both amphipathic, with the alpha1 helix and the beta sheet lying parallel and the hydrophobic faces tightly packed against each other. The beta sheet is composed of two long inner strands (beta2 and beta3) sandwiched by two shorter outer strands (beta1 and beta4) [].; GO: 0003677 DNA binding, 0005634 nucleus; PDB: 2KY8_A 1UB1_A 1D9N_A 1IG4_A 1QK9_A 3C2I_A.
>cd00122 MBD MeCP2, MBD1, MBD2, MBD3, MBD4, CLLD8-like, and BAZ2A-like proteins constitute a family of proteins that share the methyl-CpG-binding domain (MBD)
The MBD consists of about 70 residues and is defined as the minimal region required for binding to methylated DNA by a methyl-CpG-binding protein which binds specifically to methylated DNA. The MBD can recognize a single symmetrically methylated CpG either as naked DNA or within chromatin. MeCP2, MBD1 and MBD2 (and likely MBD3) form complexes with histone deacetylase and are involved in histone deacetylase-dependent repression of transcription. MBD4 is an endonuclease that forms a complex with the DNA mismatch-repair protein MLH1. The MBDs present in putative chromatin remodelling subunit, BAZ2A, and putative histone methyltransferase, CLLD8, represent two phylogenetically distinct groups within the MBD protein family.
>cd01396 MeCP2_MBD MeCP2, MBD1, MBD2, MBD3, and MBD4 are members of a protein family that share the methyl-CpG-binding domain (MBD)
The MBD, consists of about 70 residues and is defined as the minimal region required for binding to methylated DNA by a methyl-CpG-binding protein which binds specifically to methylated DNA. The MBD can recognize a single symmetrically methylated CpG either as naked DNA or within chromatin. MeCP2, MBD1 and MBD2 (and likely MBD3) form complexes with histone deacetylase and are involved in histone deacetylase-dependent repression of transcription. MBD4 is an endonuclease that forms a complex with the DNA mismatch-repair protein MLH1.
>cd01395 HMT_MBD Methyl-CpG binding domains (MBD) present in putative histone methyltransferases (HMT) such as CLLD8 and SETDB1 proteins; CLLD8 contains a MBD, a PreSET and a bifurcated SET domain, suggesting that CLLD8 might be associated with methylation-mediated transcriptional repression
SETDB1 and other proteins in this group have a similar domain architecture. SETDB1 is a novel KAP-1-associated histone H3, lysine 9-specific methyltransferase that contributes to HP1-mediated silencing of euchromatic genes by KRAB zinc-finger proteins.