NDLI: Global Chromatin Structure of 45,000 Base Pairs of Chromosome III in a- and α-Cell Yeast and during Mating-Type Switching

Content Provider	PubMed Central
Author	Ercan, Sevinc Simpson, Robert T.
Copyright Year	2004
Abstract	Directionality of yeast mating-type switching has been attributed to differences in chromatin structure for the left arm of chromosome III. We have mapped the structure of ∼45 kbp of the left arm of chromosome III in a and α cells in logarithmically growing cultures and in a cells during switching. Distinctive features of chromatin structure were the occurrence of DNase I-hypersensitive sites in the promoter region of nearly every gene and some replication origins and the presence of extended regions of positioned nucleosomes in ∼25% of the open reading frames. Other than the recombination enhancer, chromatin structures were identical in the two cell types. Changes in chromatin structure during switching were confined to the recombination enhancer. This unbiased analysis of an extended region of chromatin reveals that significant features of organized chromatin exist for the entire region, and these features are largely static with respect to mating type and mating-type switching. Our analysis also shows that primary chromatin structure does not cause the documented differences in recombinational frequency of the left arm of chromosome III in yeast a and α cells.
Related Links	http://dx.doi.org/10.1128/mcb.24.22.10026-10035.2004
Ending Page	10035
Page Count	10
Starting Page	10026
File Format	PDF
ISSN	02707306
e-ISSN	10985549
Journal	Molecular and Cellular Biology
Issue Number	22
Volume Number	24
Language	English
Publisher	American Society for Microbiology
Publisher Date	2004-11-15
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Cell Biology Molecular Biology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Cell Biology Molecular Biology

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