MBD1 Transcriptional repressor that binds CpG islands in promoters where the DNA is methylated at position 5 of cytosine within CpG dinucleotides. Binding is abolished by the presence of 7-mG that is produced by DNA damage by methylmethanesulfonate (MMS). Acts as transcriptional repressor and plays a role in gene silencing by recruiting AFT7IP, which in turn recruits factors such as the histone methyltransferase SETDB1. Probably forms a complex with SETDB1 and ATF7IP that represses transcription and couples DNA methylation and histone 'Lys-9' trimethylation. Isoform 1 and isoform 2 can also repress transcription from unmethylated promoters. Widely expressed. 6 alternatively spliced human isoforms have been reported. Note: This description may include information from UniProtKB.
Protein type: Transcription factor
Chromosomal Location of Human Ortholog: 18q21.1
Cellular Component:  chromosome; nuclear matrix; nuclear speck; nucleoplasm; nucleus
Molecular Function:  DNA binding; DNA-binding transcription factor activity, RNA polymerase II-specific; double-stranded methylated DNA binding; methyl-CpG binding; protein binding; zinc ion binding
Biological Process:  negative regulation of transcription, DNA-templated; transcription by RNA polymerase II
Reference #:  Q9UIS9 (UniProtKB)
Alt. Names/Synonyms: CXXC-type zinc finger protein 3; CXXC3; MBD1; methyl-CpG binding domain protein 1; methyl-CpG binding domain protein 1 isoform PCM1; Methyl-CpG-binding domain protein 1; Methyl-CpG-binding protein MBD1; PCM1; Protein containing methyl-CpG-binding domain 1; RFT; the regulator of fibroblast growth factor 2 (FGF-2) transcription
Gene Symbols: MBD1
Molecular weight: 66,607 Da
Basal Isoelectric point: 9.32  Predict pI for various phosphorylation states
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Protein Structure Not Found.

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