Regulation of gene expression occurs at multiple levels and is mediated by numerous factors. DNA-binding proteins such as histones function to spatially organize the DNA into chromatin. The spatial organization of chromatin is also important for gene expression, and modifications to DNA-binding proteins have profound effects on gene expression. Human Histone Deacetylase 3 (HDAC3) is a protein of approximately 50 kDa that removes acetyl groups from the ε-amino groups of lysines in histones, thus in competition with the acetylases. HDAC3 is the third member of this family of deacetylases, related to the yeast RPD3 gene, which affect transcription of certain human genes. HDAC3 importance is reflected in its distribution in virtually every cell type examined. In in vitro assays, HDAC3 exhibited activity towards histones H3 and H4 acetylated in vivo. Furthermore, inhibitors of deacetylation, such as sodium butyrate, inhibited HDAC3 activity. Further studies will determine the specific role of HDAC3 in regulating gene expression.
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注意事项：
1.Since applications vary, each investigator should titrate the reagent to obtain optimal results.
2.Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
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