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Nucleosomes Are Essential for Proper Regulation of a Multigated Promoter in Saccharomyces cerevisiae.

Genetics. 2016; 
Yarrington Robert M,Goodrum Jenna M,Stillman Dav
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Gene Synthesis We synthesized alternative versions of the CLN2- wtNDR and CLN2-mutNDR segments, but lacking SBF sites, using GenScript (plasmids M5628 and M5629). Get A Quote

摘要

Nucleosome-depleted regions (NDRs) are present immediately adjacent to the transcription start site in most eukaryotic promoters. Here we show that NDRs in the upstream promoter region can profoundly affect gene regulation. Chromatin at the yeast HO promoter is highly repressive and numerous coactivators are required for expression. We modified the HO promoter with segments from the well-studied CLN2 NDR, creating chimeric promoters differing in nucleosome occupancy but with binding sites for the same activator, SBF. Nucleosome depletion resulted in substantial increases in both factor binding and gene expression and allowed activation from a much longer distance, probably by allowing recruited coactivato... More

关键词

cell cycle,chromatin,gene regulation,promoter,transcription fa