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Promoter-proximal CCCTC-factor binding is associated with an increase in the
transcriptional pausing index
#MMPMID23047559
Paredes SH
; Melgar MF
; Sethupathy P
Bioinformatics
2013[Jun]; 29
(12
): 1485-7
PMID23047559
show ga
MOTIVATION: It has been known for more than 2 decades that after RNA polymerase
II (RNAPII) initiates transcription, it can enter into a paused or stalled state
immediately downstream of the transcription start site before productive
elongation. Recent advances in high-throughput genomic technologies facilitated
the discovery that RNAPII pausing at promoters is a widespread physiologically
regulated phenomenon. The molecular underpinnings of pausing are incompletely
understood. The CCCTC-factor (CTCF) is a ubiquitous nuclear factor that has
diverse regulatory functions, including a recently discovered role in promoting
RNAPII pausing at splice sites. RESULTS: In this study, we analyzed CTCF binding
sites and nascent transcriptomic data from three different cell types, and found
that promoter-proximal CTCF binding is significantly associated with RNAPII
pausing.