Journal
CURRENT OPINION IN GENETICS & DEVELOPMENT
Volume 31, Issue -, Pages 50-56Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.gde.2015.04.001
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- National Institute of Health [GM079533]
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In Caenorhabditis elegans, males have one X chromosome and hermaphrodites have two. Emerging evidence indicates that the male X is transcriptionally more active than autosomes to balance the single X to two sets of autosomes. Because upregulation is not limited to males, hermaphrodites need to strike back and downregulate expression from the two X chromosomes to balance gene expression in their genome. Hermaphrodite-specific downregulation involves binding of the dosage compensation complex to both Xs. Advances in recent years revealed that the action of the dosage compensation complex results in compaction of the X chromosomes, changes in the distribution of histone modifications, and ultimately limiting RNA Polymerase II loading to achieve chromosome-wide gene repression.
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