期刊
OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY
卷 17, 期 6, 页码 283-296出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/omi.2012.0105
关键词
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资金
- University of Malaya [F000009-21001, PG016-2012B, FP041/2010A]
DNA methylation, histone modifications, and chromatin configuration are crucially important in the regulation of gene expression. Among these epigenetic mechanisms, silencing the expression of certain genes depending on developmental stage and tissue specificity is a key repressive system in genome programming. Polycomb (Pc) proteins play roles in gene silencing through different mechanisms. These proteins act in complexes and govern the histone methylation profiles of a large number of genes that regulate various cellular pathways. This review focuses on two main Pc complexes, Pc repressive complexes 1 and 2, and their phylogenetic relationship, structures, and function. The dynamic roles of these complexes in silencing will be discussed herein, with a focus on the recruitment of Pc complexes to target genes and the key factors involved in their recruitment.
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