Figure 1 from Mitochondrial transcription factor A promotes DNA strand Biology Diagrams Taken together, these recent studies call for a paradigm shift toward a dynamic model of TF behavior during mitosis, underscoring the need for incorporating dynamics in mechanistic models for re-establishing transcription post-mitosis. Keywords: binding dynamics, mitotic bookmarking, transcription factors, transcriptional memory. Introduction Mitotic bookmarking transcription factors (BFs) maintain the capacity to bind to their targets during mitosis, despite major rearrangements of the chromatin. While they were thought to propagate gene regulatory information through mitosis by statically occupying their DNA targets, it has recently become clear that BFs are highly dynamic in Mitosis is accompanied by dramatic changes in chromatin organization and nuclear architecture. Transcription halts globally and most sequence-specific transcription factors and co-factors are ejected from mitotic chromatin. How then does the cell maintain its transcriptional identity throughout the cell division cycle? It has become clear that not all traces of active transcription and gene
Abstract. The genome is dynamically reorganized, partitioned, and divided during mitosis. Despite their role in organizing interphase chromatin, transcription factors were largely believed to be mitotic spectators evicted from chromatin during mitosis, only able to reestablish their position on DNA upon entry into G 1.However, a panoply of evidence now contradicts this early belief. In fact, several transcription factors essential for the stemness maintenance act as bookmarking proteins that guarantee the cell fate preservation once mitosis ends [47,51]. It is then tempting to speculate that errors on the proper reactivation of transcription after mitosis might interfere with the rapid establishment of pluripotency in stem Mitosis is accompanied by dramatic changes in chromatin organization and nuclear architecture. Transcription halts globally and most sequence-specific transcription factors and co-factors are ejected from mitotic chromatin. How then does the cell maintain
Mitotic transcription and waves of gene reactivation during mitotic ... Biology Diagrams
Early studies of transcription factor binding in mitosis led to a conclusion that a subset of factors are retained in mitotic chromatin 3 and that genes that are active in interphase can also "Bookmarking" transcription factors remain bound in mitosis to a subset of their interphase sites (10-15). Knockdown of these factors during mitosis delays reactivation of target genes (10, 11, 13), although the proper transcriptome is eventually regenerated. Thus, the basis for identity maintenance during mitosis remains unclear, and the The genome is dynamically reorganized, partitioned, and divided during mitosis. Despite their role in organizing interphase chromatin, transcription factors were largely believed to be mitotic spectators evicted from chromatin during mitosis, only able to reestablish their position on DNA upon entry into G 1.However, a panoply of evidence now contradicts this early belief.
