Polycomb protein EED is a protein that in humans is encoded by the EED gene. [5] [6] [7]
Polycomb protein EED is a member of the Polycomb-group (PcG) family. PcG family members form multimeric protein complexes, which are involved in maintaining the transcriptional repressive state of genes over successive cell generations. This protein interacts with enhancer of zeste 2, the cytoplasmic tail of integrin β7, immunodeficiency virus type 1 (HIV-1) MA protein, and histone deacetylase proteins. This protein mediates repression of gene activity through histone deacetylation, and may act as a specific regulator of integrin function. Two transcript variants encoding distinct isoforms have been identified for this gene. [7]
In humans, a de-novo mutation in EED has been reported in an individual displaying symptoms similar to those of Weaver syndrome. [8]
EED has been shown to interact with:
Methyl-CpG-binding domain protein 1 is a protein that in humans is encoded by the MBD1 gene. The protein encoded by MBD1 binds to methylated sequences in DNA, and thereby influences transcription. It binds to a variety of methylated sequences, and appears to mediate repression of gene expression. It has been shown to play a role in chromatin modification through interaction with the histone H3K9 methyltransferase SETDB1. H3K9me3 is a repressive modification.
Enhancer of zeste homolog 2 (EZH2) is a histone-lysine N-methyltransferase enzyme encoded by EZH2 gene, that participates in histone methylation and, ultimately, transcriptional repression. EZH2 catalyzes the addition of methyl groups to histone H3 at lysine 27, by using the cofactor S-adenosyl-L-methionine. Methylation activity of EZH2 facilitates heterochromatin formation thereby silences gene function. Remodeling of chromosomal heterochromatin by EZH2 is also required during cell mitosis.
Polycomb complex protein BMI-1 also known as polycomb group RING finger protein 4 (PCGF4) or RING finger protein 51 (RNF51) is a protein that in humans is encoded by the BMI1 gene. BMI1 is a polycomb ring finger oncogene.
Histone-lysine N-methyltransferase SUV39H1 is an enzyme that in humans is encoded by the SUV39H1 gene.
Histone acetyltransferase KAT2A is an enzyme that in humans is encoded by the KAT2A gene.
Nuclear inhibitor of protein phosphatase 1 is an enzyme that in humans is encoded by the PPP1R8 gene.
Chromatin assembly factor 1 subunit A is a protein that in humans is encoded by the CHAF1A gene.
Histone H2B type 1-K is a protein that in humans is encoded by the HIST1H2BK gene.
DNA methyltransferase 1-associated protein 1 is an enzyme that in humans is encoded by the DMAP1 gene.
E3 ubiquitin-protein ligase RING2 is an enzyme that in humans is encoded by the RNF2 gene.
Polycomb protein SUZ12 is a protein that in humans is encoded by the SUZ12 gene.
Histone H3.1 is a protein in humans that is encoded by the HIST1H3A gene.
WD repeat-containing protein 5 is a protein that in humans is encoded by the WDR5 gene.
Histone H3.1 is a protein that in humans is encoded by the HIST1H3F gene.
Enhancer of polycomb homolog 1 is a protein that in humans is encoded by the EPC1 gene.
Histone H4 is a protein that in humans is encoded by the HIST1H4A gene.
Set1/Ash2 histone methyltransferase complex subunit ASH2 is an enzyme that in humans is encoded by the ASH2L gene.
Histone-lysine N-methyltransferase EZH1 is an enzyme that in humans is encoded by the EZH1 gene.
Trithorax-group proteins (TrxG) are a heterogeneous collection of proteins whose main action is to maintain gene expression. They can be categorized into three general classes based on molecular function:
PRC2 is one of the two classes of polycomb-group proteins or (PcG). The other component of this group of proteins is PRC1.